2016 detailed weather summaries Llanwnnen

January 2016

Mild and wet; virtually snow-less

Although containing a cold spell this was still a mild month overall and with no lying snow or even proper falling snow, although with at least a few sharp frosts. The final 10 days were often very mild with the January highest maximum getting beat twice. It was the mildest January since 2012 (5.8c). This was the third successive month over 200mm rain but only the wettest January since 2014 (236.3mm). November to January has become my wettest 3 month period with 796.8mm. Estimated sunshine at 37 hours was rather below average.

1^st – 9^th: mostly mild and unsettled, windy at times, spells of rain or showers, heavy at times. A cloudy wet spell having 105mm rain. Temperatures fluctuated but often above average, there was a slight frost evening of 7^th. As with December sunshine very limited.

10^th – 18^th: rather cold and unsettled, occasional showers, some heavy with hail, sleet and wet snow. Some sunny intervals but generally a lot of cloud still, clear intervals permitted a couple of slight frosts. Hail accumulated to about 1cm on the night of 13^th/ 14^th.

19^th/ 20^th: rather cold and mostly dry with sunny spells. A run of 56 consecutive rain days stretching back to November 23^rd ended 18^th. Coldest temperature of the Winter to date min -6.9c 20^th.

21^st – 31^st: often very mild and cloudy; unsettled with rain at times, some quite heavy and it was often windy. My January high temperature record fell, maximum 12.8c on the 24^th beating 12.7c from January 2015, as for minima, some exceptionally mild nights above 10c, but did not break my record (11.3c, 20/1/08 still highest SRB 2006). Brief colder interludes, with a slight air frost 28^th, while the maximum was below average 30^th. The final day saw a new record high maximum of 13.0c so beating the previous Sunday!

Total rainfall: 217.6mm (151%)

Wettest day: 23.5mm 26^th

Max rain rate: 28.2mm/hr 4^th

Rain days >0.2mm: 28
Wet days >1.0mm: 26
Days of heavy rain >10mm: 10

Longest dry spell: 2 days 19^th - 20^th Mean temperature: 5.5c

Mean Max: 8.1c

Mean Min: 2.9c

High Max: 13.0c 31^st
Low Max: 4.1c 16^th/ 20^th
High Min: 10.6c 25^th, 27^th
Low Min: -6.9c 20^th

Est sun: 37 hr

Max sun: 7.5 hrs 20^th

Days no sun: 10

Air frost: 7

Ground frost: 10

Mean RH: 93%

High RH: 100% vs
Low RH: 66% 19^th

Predominant wind direction: SW
Mean wind speed: 7.7mph (to 28^th after which there was a fault with the anemometer which had a period not recording speed)

Max gust: 53mph 26^th Mean pressure: 1006 mbar
Max pressure: 1031.0 mbar 16^th
Min pressure: 975.8 mbar 9^th

Days with:

Hail: 7 ( >0.5cm 1)
Gale: 0
Thunder: 0

Sleet or snow falling: 3
Fog: 3

Fog at 0900: 0

0900 WIND: N 2 NE 1 E 1 SE 2 S 4 SW 13 W 3 NW 2 C 3

February 2016 Llanwnnen, Ceredigion

Near average temperatures, rather wet, virtually snowless

A rather more typical Winter month as tempreatures were little higher than average overall, a 10 minute snow shower early on the 25^th providing the Season's only snow lying day (the dusting all gone by 1100). Estimated sunshine about average at 65 hours..

A mild unsettled windy start to the month, it rained on each day to12th with several rather wet days (19.0mm 9^th). The months highest maximum was 11.6c on the 1^st but it turned cooler from the 9^th with some night frost. Rather dull through to mid month. Mostly dry 12^th - 16^th with sunny spells developing. Temperatures a little below average with a sharp frost 16^th. Another mild and unsettled spell with rain at times 17^th - 22^nd again with plenty of cloud. Minimum 10.0c 21^st highest of the month. A mostly dry final week, temperatures close to or a little below average, -6.7c the month's lowest temperature on the 24th with each of the final 7 nights having an air frost. Light rain and feeling quite raw 29^th. A quirk of the Leap Year combined with the throwback system then being that heavy rain overnight and on the morning of March 1^st made 29^th February's wettest day with 21.6mm!

Total rainfall: 140.9mm (139%)

Wettest day: 21.6mm 29^th

Max rain rate: 28mm/ hr 5^th

Rain days >0.2mm: 21
Wet days >1.0mm: 17
Days of heavy rain >10mm: 7

Longest dry spell: 25^th - 28^th 4 daysMean temperature: 4.3c

Mean Max: 7.6c

Mean Min: 1.0c

High Max: 11.6c 1^st
Low Max: 4.9c 29^th
High Min: 10.0c 21^st
Low Min: -6.7c 24^th

Est sun: 65 hr

Max sun: 9hrs 25^th

Days no sun: 7

Air frost: 13

Ground frost: 17

Mean RH: 88%

High RH: 100% vs
Low RH: 53% 15th

Predominant wind directions: WSW
Mean wind speed: 7.5mph

Max gust: 44mph 16^th Mean pressure: 1010mbar
Max pressure: 1035mbar 6^th
Min pressure: 977mbar 8^th

Days with:

Hail 7
Gale 0
Thunder: 0

Sleet or snow falling 3

Snow lying 0900 1 (just)
Fog 1

Fog at 0900 0

0900 WIND: N 0 NE 4 E 2 SE 0 S 2 SW 6 W 6 NW 3 C 6

Winter 2015/16

Very mild (due to an exceptionally mild December) and very wet; virtually snow-less

A remarkably mild and wet December made this one of the mildest and wettest Winters on record highly dominated by SW winds. Comfortably the wettest 3 month period I have recorded here, with almost double the average rainfall for the season while the mean temperature was 0.4c above Winter 2006/7 which saw consistently mild weather though no month was extreme. A dusting of snow on Feb 25^th prevented it from being a snow-less Winter. No really severe frosts at all, nothing lower than -6.9c. Although windy at times no gust exceeded 57mph.

Total rainfall: 698.8mm (179%)

Wettest day: 33.6mm Dec 29^th
Rain days >0.2mm: 80
Wet days >1.0mm: 70
Days of heavy rain >10mm: 31

Longest dry spell 4 days Feb 25^th - 28^th Mean temperature: 6.4c

Mean Max: 9.0c

Mean Min: 3.7c

High Max: 13.9c Dec 7^th & 18^th
Low Max: 4.1c Jan 20^th
High Min: 12.1c Dec 26^th
Low Min: -6.9c Jan 20^th

Est sun: 126hr

Max sun: 9 hrs Feb 25^th

Days no sun: 34

Air frost: 21

Ground frost: 30

Ice days 0

Mean RH: 91%

High RH: 100% numerous
Low RH: 53% Feb 15^th

Predominant wind directions: SW
Mean wind speed: 8.4mph

Max gust: 57mph Dec 5^th Mean pressure: 1010mbar
Max pressure: 1035mbar Feb 16^th
Min pressure: 976mbar Jan 9^th

Days with:

Hail: 17
Gale: 0
Thunder: 1

Snow or sleet: 7

Snow lying 0900: 1 (sprinkling Feb 25th)
Fog: 4

Fog at 0900: 0

0900 WIND: N 2 NE 6 E 4 SE 5 S 11 SW 35 W 14 NW 5 C 9

March 2016

Rather wet in spite of a lengthy dry spell mid month; rather cool but rather sunny

This was the wettest March since 2008 (167.9mm) even though it included a 13 day dry spell. Temperature mean slightly below average due to cool nights, there were 12 air frosts. Nothing spectacular weather or temperature- wise.

1^st – 9^th unsettled with rather fluctuating temperatures; occasional rain or showers, some wintry. Varied from a very mild 12.6c 1^st, to rather cold several days (lowest max 4.8c 4^th), there were some frosts by night. Windy at times, sunshine limited excepting 5^th which had decent sunny periods.

10^th -20^th dry, usually mild by day and sunny; the location of high pressure to our north enabled WW to be favoured from the north to NE breeze. Many days saw plentiful sunshine, a few unbroken, although many nights were frosty. Max 15.8c 15^th was above any official Welsh station, while the min of -5.4c 18^th was lower.

21^st - 23^rd cloudier but dry with average temperatures

24^th – 29^th unsettled, spells of rain or showers, some heavy, both 26^th and 27^th over 20mm (24.3mm latter). Windy at times, some sunny intervals, near normal temps

30^th/ 31^st dry with sunny periods, night frost, near average maxima

Total rainfall: 108.2mm 130%

Wettest day: 24.3mm 27^th

Rain days >0.2mm: 16
Wet days >1.0mm: 13
Days of heavy rain >10mm: 3

Longest dry spell 10^th -22^nd 13 daysMean temperature: 5.6c

Mean Max: 10.1c

Mean Min: 1.0c

High Max: 15.8c 15^th
Low Max: 4.8c 4^th
High Min: 6.3c 26^th
Low Min: -5.4c 18^th

Est sun: 130hr 141%

Max sun: 11 hrs 18^th

Days no sun: 3

Air frost: 12

Ground frost: 17

Mean RH: 85%

High RH: 100% vs
Low RH: 46% 14^th

Predominant wind directions: WNW
Mean wind speed: 6.1mph

Max gust: 50mph 2^nd Mean pressure: 1014mbar
Max pressure: 1035.0mbar 13^th
Min pressure: 976.5mbar 28^th

Days with:

Hail: 4 (2 days surmised while away as showery)
Gale: 0
Thunder: 0
Fog: 4

Fog at 0900: 0

Sleet or snow falling 5

Snow lying 0900: 0

0900 WIND: N 5 NE 4 E 2 SE 0 S 4 SW 6 W 5 NW 0 C 5

April 2016

Rather cool and changeable with April showers, some wintry; rainfall slightly below average

Coolest April since 2013 (6.6c)

Rainfall total 68.6mm slightly below average.

Estimated sunshine at 133 hours rather below average.

Highest incidence of sleet or snow falling here (on 5 days) SRB 2006, although it did not settle unlike in April 2008 (2cm 7^th).

1^st – 11^th unsettled, occasional rain or showers, mostly in quite small amounts, rather cloudy but some sunny spells, especially 5^th which was dry and fairly sunny. Temperatures around average, but rather cold 9^th (max 8.1c) when there were some wintry showers with a little snow.

12^th – 17^th mostly dry, a little rain at times or brief showers, some sunny spells, mild to 14^th then cool.

18^th - 21^st dry with sunny spells and became rather warm. 20^th saw an estimated 13 hours of unbroken sunshine and the month's high at 18.2c and 31% was the lowest RH in the 4 year operation of the Davis Vantage Vue. Several nights had slight frost.

22^nd - 30^th sunny spells and occasional showers, became very cool. Quite a notable cool spell for the end of April with wintry showers on several days along with plentiful hail. Max 8.2c 27^th was some 6c below average, quite a sharp frost followed, min -3.2c, not as hard as the -5.0c on April 27^th last year. Several days escaped largely dry and bright. Predominantly north to NW winds were often fresh. Temperatures recovered somewhat on the final day (max 11.8c).

Total rainfall: 68.6mm 89%

Wettest day: 12.7mm 1^st

Max rain rate: 16.6mm/ hr 28^th
Rain days >0.2mm: 24
Wet days >1.0mm: 17
Days of heavy rain >10mm: 2

Longest dry spell 5 days 17^th - 21^st Mean temperature: 7.1c

Mean Max: 11.8c

Mean Min: 2.5c

High Max: 18.2c 20^th
Low Max: 8.1c 9th
High Min: 8.0c 22^nd
Low Min: -3.2c 28^th

Est sun: 133hr (88%)

Max sun: 13 hrs 20th

Days no sun: 0

Air frost: 11

Ground frost: 13

Mean RH: 80%

High RH: 100% several days
Low RH: 31% 20^th

Mean wind direction: NW
Mean wind speed: 5.8mph

Max gust: 37mph 1^st Mean pressure: 1013mbar
Max pressure: 1030mbar 20th
Min pressure: 999mbar 4th

Days with:

Hail: 9 (4 having >5mm)
Gale: 0
Thunder: 0
Fog: 2

Fog at 0900: 0

Sleet or snow: 5

Snow lying 0900: 0

0900 WIND: N 5 NE 5 E 6 SE 1 S 1 SW 3 W 5 NW 4 C 0

May 2016

Rather warm and somewhat changeable; average rainfall and sunshine

Overall quite a warm month due to warm mean maxima with mean minima close to average, the warmest May since 2011 (12.1c). Just one air frost but 10 ground frost. The month saw fine, dry and warm spells interspersed with more unsettled interludes. Sunshine very close to average an estimated 190 hours. Rainfall also was average with no stand out wet days

1^st / 2^nd mostly cloudy with some rain, cool and breezy

3^rd – 8^th mostly dry and became warm with sunny spells. Ground frosts by night. Very warm max 25.7c 8^th was the months high reading being the warmest this early in the Season since April 2007 (c. 26c)

9^th - 11^th mostly cloudy and breakdown via a thunderstorm on the evening of 9^th. Further occasional rain followed and it was a mostly cloudy though rather warm humid interlude with min 13.7c 10^th being the months highest min

12^th -16^th dry with sunny periods, warm at first but with air frost min -1.5c 15^th

17^th - 23^rd unsettled and breezy with rain at times, cool to average temperatures, sunny intervals

24^th - 26^th mostly dry with sunny spells and ground frosts overnight, variable maxima

27^th –31^st warm with sunny spells and some thunderstorms became dry and sunny. Thunderstorms passed directly overhead on both 27^th and 28^th with much thunder and lightning, nearby Lampeter town experienced flooding but rainfall was not excessive here. Near unbroken sunshine for final 3 days.

Total rainfall: 78.3mm

Wettest day: 11.8mm 27^th

Max rain rate: 44.2mm/ hr 27^th
Rain days >0.2mm: 15
Wet days >1.0mm: 13
Days of heavy rain >10mm: 3

Longest dry spell 5 days 12^th - 16^th Mean temperature: 12.0c

Mean Max: 17.8c

Mean Min: 6.1c

High Max: 25.7c 8^th
Low Max: 11.2c 1^st
High Min: 13.7c 10^th
Low Min: -1.5c 15^th

Est sun: 190 hr 100%

Max sun: 12.5 hrs 30^th

Days no sun: 1

Air frost: 1

Ground frost: 10

Mean RH: 81%

High RH: 100% vs
Low RH: 37% 8^th

Predominant wind directions: SW
Mean wind speed: 4.7mph

Max gust: 35mph 31^st Mean pressure: 1015mbar
Max pressure: 1028mbar 3^rd
Min pressure: 1002mbar 18^th

Days with:

Hail: 1
Gale: 0
Thunder: 3
Fog: 2

Fog at 0900: 0

0900 WIND: N 3 NE 4 E 7 SE 3 S 4 SW 7 W 3 NW 0 C 0

Spring 2016

Rather cool with near normal rainfall and sunshine

Below average temperatures were a consequence of the cool April with May a rather warm month. March was rather wet but sunny, April and May near average for both aspects of weather

Total rainfall: 255.1mm 108%

Wettest day: 24.3mm March 27^th

Max rain rate: 44m/ hr May 27^th
Rain days >0.2mm: 15
Wet days >1.0mm: 13
Days of heavy rain >10mm: 8

Longest dry spell: 13 days March 10^th -22^nd Mean temperature: 8.2c

Mean Max: 13.2c

Mean Min: 3.2c

High Max: 25.7c May 8^th
Low Max: 4.8c March 4^th
High Min: 13.7c May 10^th
Low Min: -5.4c March 18^th

Est sun: 454hrs 104%

Max sun: 13 hours Apr 20^th

Days no sun: 4

Air frost: 24

Ground frost: 40

Mean RH: 82%

High RH: 100% numerous
Low RH: 31% April 20^th

Predominant wind directions: west
Mean wind speed: 5.5mph

Max gust: 50mph March 2^nd Mean pressure: 1014mbar
Max pressure: 1035mbar March 13^th
Min pressure: 976.5mbar March 28^th

Days with:

Hail: 14
Gale: 0
Thunder: 3
Fog: 8

Fog at 0900: 0

Snow or sleet: 0

0900 WIND: N 13 NE 13 E 15 SE 4 S 9 SW 16 W 13 NW 4 C 5

June 2016

Fine warm start then changeable; quite warm overall and rather wet and dull

Wettest June since 2012 (218.3mm).

Warmest since 2009 (14.9c) although mean max only since 2014 (19.9c). In spite of this only one day exceeded 20c after 12^th (21.3c 22^nd). The low max was higher than in recent June's, the lowest being a mere 14.9c on the 28^th.

1^st - 9^th warm or very warm and mostly dry, sunny at times. Almost unbroken sun 2^nd/ 3^rd (15.5 hours estimated 2^nd). Chilly start to 3^rd though (lowest min 3.9c). Dry bar some showers evening of 6^th accompanied by distant TL

10^th - 14^th cooler and unsettled though still quite warm at first became cool (max 15.7c 14^th). Mostly cloudy with occasional mostly light rain or showers

15^th - 18^th mostly dry with some sunny intervals and near average temperatures. Thunder heard 15^th

19^th/ 20^th spell of rain, cloudy rather cool 19^th with sunny intervals pm 20^th. Month's high min 14.6c 20^th

21^st – 25^th sunny intervals and often dry, just a little rain or showers some days. Around average temperatures turned rather cool. Often breezy

26^th - 30^th cool unsettled end to the month with spells of rain and often overcast. 26^th dismal damp cool day, max just 15.7c equal lowest of the month to that date, was though followed by a better dry bright warmer day. Very cool 28^th max just 14.9c.

Total rainfall: 86.6mm 127%

Wettest day: 18.3mm 19^th

Max rain rate: 25.6mm/hr 25^th
Rain days >0.2mm: 14
Wet days >1.0mm: 12
Days of heavy rain >10mm: 3

Longest dry spell 8 days May 28^th – June 5^th inc Mean temperature: 14.9c

Mean Max: 19.6c

Mean Min: 10.2c

High Max: 26.5c 6^th
Low Max: 14.9c 28^th
High Min: 14.6c 20^th
Low Min: 3.9c 3^rd

Est sun: 127 hr 78%

Max sun: 15.5 hrs 2^nd

Days no sun: 3

Air frost: 0

Ground frost: 0

Mean RH: 85%

High RH: 100% vs
Low RH: 50% 2^nd

Predominant wind directions: west
Mean wind speed: 4.2mph

Max gust: 33mph 28^th Mean pressure: 1015mbar
Max pressure: 1026mbar 7^th
Min pressure: 994mbar 15^th

Days with:

Hail: 0
Gale: 0
Thunder: 2
Fog: 2

Fog at 0900: 0

0900 WIND: N 5 NE 0 E 1 SE 4 S 1 SW 13 W 1 NW 4 C 1

July 2016

Rather dry but rather frequent rain days; very dull with average temperatures

First half decidedly cool and dull, mean maxima 1^st to 16^th 18.0c, with only one day above 20c

Possible ground frost 4^th, min 2.2c (did n't put sensor on lawn).

19^th hottest day for exactly a decade (33.6c 19^th July 2006).

17.5c min 20^th hottest in 10 year record at site.

Rainfall rather frequent but in only small amounts with 21 rain days, wettest day just 7.8mm.

Very dull, just over half the average of c. 180 hours suggested by Met Office sunshine average maps. Last third especially disappointing, each no day 21^st – 29^th failed to better 3 hours. Only 2 sunny days all month having over 10 hours.

1^st - 6^th cool and mostly dry with sunny intervals, just a few showers. Min 2.2c 4^th there may well have been a grass frost, though colder in July last year +0.7c 31^st. Temps managed average 6^th max 19.8c.

7^th - 11^th unsettled with rain at times, mostly cloudy, temps cool to average. 21.4c 8^th first day above 20c since June 22^nd (21.3c). Minima were though much milder averaging 14.1c over these 5 nights.

12^th - 16^th very cool but fairly dry, just a little light rain or showers occasionally. Each day had measurable rain but none exceeded 1.0mm. Very cool max 15.7c 12^th, no day during this spell managed above 18.0c. Rather cloudy although there were decent sunny spells 14^th which had an estimated 9.5 hours making it the sunniest day since June 3^rd (14.5 hours).

17^th - 20^th much warmer with a brief hot spell. All days warm at above 23c – the highest readings since June 9^th (25.2c) with the focus of the heat 18^th - 19^th both of which saw sunny periods. Max 32.6c was the second highest I have recorded at this location in over 10 years and the hottest reading for exactly 10 years! This was followed by the warmest night I have recorded here, min 17.5c bettering17.2c on 18^th August 2012. There was some thunder and lightning also this night but no measurable rain making these 4 days the longest dry spell of the month.

21^st - 23^rd still rather warm and mostly dry but rather cloudy, just a few sunny intervals.

24^th – 29^th changeable, a lot of cloud, just fleeting sunny intervals and some rain or showers at times, cool to average temperatures, though some rather warm nights at first.

30^th – 31^st improvement dry with sunny spells and average temperatures

Total rainfall: 52.9mm 52%

Wettest day: 7.8mm 8^th

Max rain rate: 55.4mm/ hr 12^th
Rain days >0.2mm: 21
Wet days >1.0mm: 12
Days of heavy rain >10mm: 0

Longest dry spell 4 days 17^th - 20^th
Mean temperature: 15.7c

Mean Max: 20.0c

Mean Min: 11.4c

High Max: 32.6c 19^th = hottest for exactly a decade
Low Max: 15.7c 12^th
High Min: 17.5c 20^th
Low Min: 2.2c 4^th

Est sun: 106 hrs 59%

Max sun: 12 hours 19^th

Days no sun: 4

Air frost: 0

Ground frost: 0 possibly 1

Mean RH: 87%

High RH: 100 % various dates
Low RH: 45% 19^th

Predominant wind directions: SW
Mean wind speed: 5.5mph

Max gust: 31mph 11^th Mean pressure: 1017mbar
Max pressure: 1028mbar 14^th
Min pressure: 1003mbar 10^th

Days with:

Hail: 0
Gale: 0
Thunder: 1
Fog: 2

Fog at 0900: 0

0900 WIND: N 1 NE 0 E 1 SE 0 S 3 SW 14 W 6 NW 6 C 0

August 2016

Rather dull and changeable but rather warm and rather dry

Maxima and minima both slightly above average - this was the second warmest August on record here after 16.2c in 2012.

Rather dry with no thunder or hail.

Third dull month of Summer although realising its potential more than June and July having a greater proportion of the available daylight with sunshine so it did feel a more pleasant month along with the overall warmth and dryness.

1^st - 3^rd very cool wet 1^st max 14.9c the lowest of the month. The following two days then mostly cloudy with just a little rain and nearer average temperatures

4^th - 14^th mostly dry but rather cloudy, some sunny spells. Temperatures close to average although cool max 16.4c on the 9^th

15^th - 18^th warm or very warm and mostly dry; only 2.2mm rain 4^th – 16^th. 15^th and 16^th saw almost unbroken sunshine, unusual for this dull Summer 2016!

19^th - 22^nd unsettled and mostly cloudy with occasional rain or drizzle. 17.1mm on the 19^th was the wettest day of the month. Temperatures near normal by day but with mild nights, min 16.1c 22^nd was the warmest of the month

23^rd - 31^st often dry and rather warm with sunny spells although rather cloudy a few days. Temperatures reached 26.3c 23^rd and fell to 3.7c 27^th but not quite a grass frost. A little rain at times as well.

Total rainfall: 65.1mm 60%

Wettest day: 17.1mm 19^th

Max rain rate: 78.4mm/ hr 19^th
Rain days >0.2mm: 17
Wet days >1.0mm: 11
Days of heavy rain >10mm: 2

Longest dry spell 4 days 13^th -16^th Mean temperature: 16.1c

Mean Max: 20.6c

Mean Min: 11.5c

High Max: 26.7c 16^th
Low Max: 14.9c 1^st
High Min: 16.1c 22^nd
Low Min: 3.7c 27^th

Est sun: 120 hrs 73%

Max sun: 13 hrs 16^th

Days no sun: 2

Air frost: 0

Ground frost: 0

Mean RH: 87%

High RH: 100% vs
Low RH: 42% 16^th

Predominant wind directions: SW
Mean wind speed: 5.0mph

Max gust: 34mph 20^th Mean pressure: 1018mbar
Max pressure: 1029mbar 9^th
Min pressure: 998mbar 20th

Days with:

Hail: 0
Gale: 0
Thunder: 0
Fog: 2

Fog at 0900: 0

0900 WIND: N 1 NE 2 E 0 SE 4 S 4 SW 12 W 6 NW 1 C 1

Summer 2016

Mixed: dull but rather dry and rather warm

Surprisingly Summer 2016 was marginally on the warm side of average, both June and August being above average. However there only one brief hot spell (max above 27c) during the entire Summer that of July 18^th and 19^th. Indeed July was disappointingly dull and cool overall the stats being skewed by the extreme heat of the 19^th and 20^th (max 32.6c and min 17.5c respectively). July 19^th was the hottest for exactly 10 years while the following night was warmest in the record here. July unusually also seeing the coolest night of Summer, min 2.2c 4^th a night on which there may well have been a grass frost but a sensor was not placed on the lawn!

Rainfall was below average, July and August being rather dry, June slightly above average. The wettest day of Summer only received 18.3mm (June 19^th) although the Summer did manage rain days. There were 3 days with thunder during Summer 2016 only August failing to produce a clap.

Sunshine was very disappointing, July in particular was very dull with barely 100 hours, while June was the sunniest month of Summer with just 127 hours a mere 78% of average. One of the dullest Summers for many a year no doubt, although I do not have records to prove this. There were prolonged rather cloudy spells throughout the Summer with only 8 days of the entire Summer managing above the 10 hours which would make for a sunny day!

Total rainfall: 204.6mm 74%

Wettest day: 18.3mm June 19^th

Max rain rate: 78mm/ hr Aug 19^th
Rain days >0.2mm: 52
Wet days >1.0mm: 35
Days of heavy rain >10mm: 5

Longest dry spell: 8 days May 28^th – June 5^th Mean temperature: 15.6c

Mean Max: 20.1c

Mean Min: 11.1c

High Max: 32.6c July 19^th
Low Max: 14.9c June 28^th & Aug 1^st
High Min: 17.5c July 20^th
Low Min: 2.2c July 4^th

Est sun: 353hr 70%

Max sun: 15.5 hrs June 2^nd

Days no sun: 9

Air frost: 0

Ground frost: 0 possibly 1

Mean RH: 86%

High RH: 100% numerous
Low RH: 42% Aug 16^th

Predominant wind directions: SW
Mean wind speed: 5.1mph

Max gust: 34mph Aug 20^th Mean pressure: 1017mbar
Max pressure: 1029mbar Aug 9th
Min pressure: 994mbar June 25th

Days with:

Hail: 0
Gale: 0
Thunder: 3
Fog: 6

Fog at 0900: 0

0900 WIND: N 7 NE 2 E 2 SE 8 S 8 SW 39 W 13 NW 11 C 2

September 2016

Rather warm, rather dull and slightly wet

Warmest September since 2011 (14.7c) being 0.6c above the 10 year average.

Mean max highest for just 2 years (20.1c 2014).

Wettest September since 2010 (153mm) after a run of drier than average Septembers. Wettest day 30^th with 24.0mm almost all of which fell after midnight, and so on Oct 1^st, the total being thrown back. This was also the wettest day for 6 months (March 27^th 24.2mm).

1^st - 5^th unsettled with rain at times, mostly cloudy near normal temperatures

6^th - 7^th briefly warm to very warm, sunny spells latter. Min 16.7c 6^th equalled the warmest September night here set in 2011

8^th - 11^th unsettled with some occasional rain or showers, sunny intervals, around average temperatures. Windy 9^th gusts to gale force

12^th - 15^th dry and warm or very warm with some sunshine. 14^th hot and sunny, max 26.9c the highest recorded in September here in 11 years

16^th - 21^st mostly dry with some sunny intervals, cool to average temperatures

22^nd – 30^th unsettled and breezy, spells of rain or showers, some heavy, still drier interludes though. Rather cool to average temperatures, although rather warm for late September, max 19.1c 27^th - compared with max 14.1c the previous day which was the coolest of the month

Total rainfall: 130.5mm 115%

Wettest day: 24.0mm 30^th

Max rain rate: 30.8mm/ hr 3^rd
Rain days >0.2mm: 21
Wet days >1.0mm: 16
Days of heavy rain >10mm: 5

Longest dry spell: 4 days 14^th - 17^th Mean temperature: 14.5c

Mean Max: 18.7c

Mean Min: 10.2c

High Max: 26.9c 14^th = record
Low Max: 14.1c 26^th
High Min: 16.7c 6^th = equalled record 2011
Low Min: 2.7c 11th

Est sun: 93hr 75%

Max sun: 9.5 hrs 14^th

Days no sun: 4

Air frost: 0

Ground frost: 0

Mean RH: 90%

High RH: 100% numerous
Low RH: 57% 22^nd

Predominant wind directions: SSW
Mean wind speed: 5.4mph

Max gust: 44mph 9^th Mean pressure: 1016mbar
Max pressure: 1025mbar 27^th
Min pressure: 1006mbar 25^th

Days with:

Hail: 0
Gale: 0
Thunder: 0
Fog: 5

Fog at 0900: 1

0900 WIND: N 1 NE 2 E 0 SE 2 S 12 SW 7 W 1 NW 3 C 2

October 2016

Very dry and quite sunny; average temperatures

51mm the driest October since 2007 (45mm).

Mean pressure 1022mbar notably high for the month.

An easterly month, only 6 days from the SW quadrant.

Near average temperatures, maxima rather mild with cool nights. Coolest October since 2012 (9.2c)

Nothing extreme temperature - wise until the remarkably warm final day (max 19.4c)

High frost incidence for October, 5 air frost all slight.

1^st heavy overnight rain gave over 23mm this though credited to the last day of September. A few showers by day which was rather cool

2^nd - 14^th largely dry with sunny spells, almost unbroken sunshine a couple of days. Average to rather warm by day, but nights turned cold with frost each night 10^th - 13^th

15^th - 19^th unsettled; sunny intervals with showers and longer spells of rain, some very heavy. Turned rather cool, and quite windy at times

20^th - 23^rd dry with sunny periods, fog and slight frost by night, temperatures near average by day

24^th - 25^th Cloudy with some rain and drizzle, rather cool turned milder

26^th - 30^st dry and mild end to month. Min 12.0c 28^th mildest night of the month. Warm sunny spells 26^th then a mostly cloudy spell,

31^st warmest day of the month surprisingly! Almost unbroken sunshine, max 19.4c which challenged the remarkable max 19.9c last November!

Total rainfall: 51.0mm (36%)

Wettest day: 20.5mm 16th

Max rain rate: 49.6mm/hr 16^th
Rain days >0.2mm: 11
Wet days >1.0mm: 6
Days of heavy rain >10mm: 2

Longest dry spell: 11 days 2^nd - 12^th Mean temperature: 9.9c

Mean Max: 14.6c

Mean Min: 5.3c

High Max: 19.4c 31st
Low Max: 10.8c 24^th
High Min: 12.0c 28^th
Low Min: -2.1c 10^th

Sunshine estimated from 5 minute webcam captures: 121hr (137%)

Max sun: 9.5 hrs 11^th

Days no sun: 3

Air frost: 5

Ground frost: 9

Mean RH: 90%

High RH: 100% vs
Low RH: 58% 6^th

Predominant wind directions: ESE
Mean wind speed: 3.4mph

Max gust: 30mph 16^th Mean pressure: 1022mbar
Max pressure: 1036mbar 28^th
Min pressure: 1001mbar 15^th

Days with:

Hail: 0
Gale: 0
Thunder: 0
Fog: 4

Fog at 0900: 0

0900 WIND: N 2 NE 5 E 4 SE 6 S 2 SW 4 W 0 NW 2 C 6

November 2016

Very dry and cold; very sunny final week

Coldest since 2010 (4.3c). Cold nights, high frost incidence (12 air frosts) mean minima over 2c below average, mean maxima somewhat closer to average but still below average

Just 69.9mm made this the driest November in my record locally (SRB 2002) and certainly hereabouts since the 1980's and perhaps much further back (driest being 24mm in 1942). The final 9 days were dry.

Sunshine well above average, 93 hours as estimated from the webcam captures which is about 178% of the average as ascertained from Met Office maps. The final 7 days accounted for 45% of the monthly total, with 4 days having an unbroken 7.5 hours..

Total rainfall: 69.9mm (47%)

Wettest day: 15.6mm 8^th

Max rain rate: 34.2mm/ hr 14^th
Rain days >0.2mm: 16
Wet days >1.0mm: 15
Days of heavy rain >10mm: 2

Longest dry spell 9 days 22^nd - 30^th Mean temperature: 5.2c

Mean Max: 9.0c

Mean Min: 1.3c

High Max: 13.3c 15^th
Low Max: 4.3c Nov 21^st
High Min: 12.0c 15^th Low Min: -11.0c Nov 30^th

Est sun: 93hr 178%

Max sun: 7.5 hrs 25^th, 26^th,29^th & 30^th (unbroken bright sunny days)

Days no sun: 5

Air frost: 12

Ground frost: 16

Mean RH: 91%

High RH: 100% numerous
Low RH: 51% 29^th

Predominant wind directions: NNW
Mean wind speed: 4.4mph

Max gust: 55mph 17^th Mean pressure: 1015mbar
Max pressure: 1036mbar 30^th
Min pressure: 983mbar 20^th

Days with:

Hail: 3
Gale: 0
Thunder: 0

Snow or sleet: 0

Snow lying 0900: 0
Fog: 3

Fog at 0900: 0

0900 WIND: N 4 NE 5 E 0 SE 1 S 1 SW 6 W 1 NW 2 C 10

1^st - 3^rd dry with near average temperatures, some overnight frost and fog

4^th – 7^th a little rain or showers but often dry with sunny spells, rather cold, breezy by day. Frost most night, sharp damaging 6^th min -5.1c

8^th - 11^th unsettled, occasional rain or showers, breezy, sunny intervals

12^th - 17^th still unsettled but mild and mostly cloudy; squall 17^th with 55mph gust

18^th - 21^st cold and changeable, some rain or showers with sunny intervals, breezy but often night frost

22^nd – 23^rd mostly dry, rather cold and cloudy

24^th – 30^th dry and with sunny periods the final commenced average to quite mild by day but ended up cold. 4 days of the last 6 saw unbroken sunshine and excellent visibility; 26^th and the Wicklow Mountains of Ireland 100 miles away were visible from Constitution Hill, Aberystwyth. Most of these nights of the final week were frosty, severe frosts last two nights of the month, culiminating in minuimum -11.0c 30^th. This was the coldest night since December 26^th 2010 (-15.9c) and coldest November night since 30/11/10 (-11.0c) - some way to challenge the -13.7c of 28/11/10 however.

Autumn 2016

Dry and quite sunny with near normal temperatures

With just 251.4mm this was the driest Autumn at Llanwnnen since 2007 (220mm - it is not uncommon for an individual month to exceed 250mm at this location. September with 130.5mm was by far the wettest month, both October and November having less than half the average. No day over an inch all Season,

With a mean temperature of 9.9c this was the coolest Autumn since 2012 (8.8c). Some notable warmth in September (max 26.9c, min 16.7c mid month) and the last day of October (max 19.4c). October and November both had a high frost incidence, with 12 air frosts during the latter, a low of -5.1c as early as the 6^th then severe frosts on the final two nights (min -11.0c 30^th). Overall there was a marked progression from Summer conditions mid September to Winter by the end of November as illustrated by the 9c drop in mean temperature through the 3 months. Lowest reading of RH was 51% and unusually occurred on the 29^th November and so at the end of this rapidly cooling Season.

October and November were both sunny with a dull September; November remarkably equalled Septembers sunshine of 93 hours.

No thunder, sleet or snow at all this Autumn and just the one morning with fog at 0900.

Total rainfall: 251.4mm 62%

Wettest day: 24.0mm Sept 30^th

Max rain rate: 49.6mm/hr Oct 16^th
Rain days >0.2mm: 58
Wet days >1.0mm: 37
Days of heavy rain >10mm: 9

Longest dry spell 11 days Oct 2^nd - 12^th Mean temperature: 9.9c

Mean Max: 14.1c

Mean Min: 5.6c

High Max: 26.9c Sept 14^th
Low Max: 4.3c Nov 21^st
High Min: 16.7c Sept 6^th
Low Min: -8c Nov 30^th

Est sun: 307hr 116%

Max sun: 9.5 hrs Sept 14^th, Oct 11^th

Days no sun: 12

Air frost: 17

Ground frost: 25

Mean RH: 90%

High RH: 100% numerous
Low RH: 51% Nov 29^th

Mean wind speed: 4.4mph

Max gust: 55mph Nov 17^th Mean pressure: 1018mbar
Max pressure: 1036mbar Oct 28^th and Nov 30^th
Min pressure: 983mbar Nov 26^th

Days with:

Hail: 3
Gale: 0
Thunder: 0
Fog: 12

Fog at 0900: 1

Snow or sleet 0

0900 WIND: N 7 NE 12 E 4 SE 9 S 15 SW 17 W 2 NW 7 C 18

December 2016

Mild and dry

An anticyclonic month with an unusually high mean pressure of 1026mbar. Second driest December in the 12 year record here (driest 52.1mm 2010). Although mild well below the exceptional December 2015 (9.3c). No snow or sleet fell at all.

1^st - 5^h dry with some sunny spells; rather cold to average; 4^th cloudy and cold; frost most nights, -6.6c 1^st lowest min of month

6^th - 13^th mild to very mild and unsettled; occasional rain or drizzle, quite windy at times; max 14.3c 7^th highest max of month, min 11.3c 8^th highest min of the month; often cloudy but sunny spells some days

14^th - 19^th mostly dry, rather cloudy after sunny 14^th ; very mild dropped to nearer average

20^th – 25^th changeable with rain at times, average to very mild temperatures (max 11.8c Christmas Day). 23^rd had strong winds. An overcast spell

26^th - 31^st mostly dry with some sunshine, rather cold turned mild, lowest max of the month 3.3c 27^th. Pressure pealed at 1044mbar 27^th, the highest for many years. Unbroken sunshine 28^th.

Total rainfall: 75.1mm 52%

Wettest day: 16.0mm 7^th

Max rain rate: 73mm/hr 23^rd
Rain days >0.2mm: 18
Wet days >1.0mm: 12
Days of heavy rain >10mm: 2

Longest dry spell: 14 days Nov 22^nd – Dec 5^th Mean temperature: 9.0c

Mean Max: 3.1c

Mean Min: 6.1c

High Max: 14.3c 7^th
Low Max: 3.3c 27^th
High Min: 11.3c 8^th
Low Min: -6.6c 1^st

Est sun: 54hr (145%)

Max sun: 7 hrs 4^th and 28^th

Days no sun: 6

Air frost: 9

Ground frost: 14

Mean RH: 95%

High RH: 100% numerous
Low RH: 53% 4^th

Predominant wind directions: SSW
Mean wind speed: 4.0mph

Max gust: 46mph 23^rd Mean pressure: 1026mbar
Max pressure: 1044mbar 27^th
Min pressure: 1013mbar 21^st

Days with:

Hail: 0
Gale: 0
Thunder: 0
Fog: 5

Fog at 0900: 1

Snow or sleet: 0

Snow lying 0900: 0

0900 WIND: N 1 NE 0 E 3 SE 3 S 5 SW 6 W 3 NW 1 C 9

2016 annual summary, Llanwnnen: dry and rather mild but quite dull

Driest year since 2010 (1116.9mm), unusually no day exceeded an inch (25mm). The year ended on an unusually dry note as the final 2 months having less than half the average along with the longest dry spell of a fortnight.

Rather an uneventful year bar the brief July heatwave (32.5c hottest for a decade) and the severe frost of November 30^th (-11.0c). Lack of snow as is now the norm it would seem, snow managed to lay on just the one morning of 2016. 6 days of thunder heard being about average. It was a rather dull year overall with June to September especially dull, each month being below 80% of average as estimated. Unusually high pressure occurred just after Christmas reaching 1044mbar the highest for a number of years.

Total rainfall: 1144.7mm (87%)

Wettest day: 24.2mm March 27^th

Max rain rate: 78mm/hr Aug 19^th
Rain days >0.2mm: 222
Wet days >1.0mm: 171
Days of heavy rain >10mm: 41

Longest dry spell 14 days Nov 22^nd – Dec 5^th Mean temperature: 9.7c

Mean Max: 13.9c

Mean Min: 5.5c
High Max: 32.6c July 19^th
Low Max: 3.3c Dec 27^th
High Min: 17.5c July 20^th
Low Min: -11.0c Nov 30^th

Est sun: 1269hr (94%)

Max sun: 15.5 hrs June 2^nd

Days no sun: 48

Air frost: 70

Ground frost: 106

Mean RH: 88%

High RH: 100% numerous
Low RH: 31% April 20^th

Predominant wind directions: WSW
Mean wind speed: 5.3mph

Max gust: 55mph Nov 17^th Mean pressure: 1016mbar
Max pressure: 1044mbar Dec 27^th
Min pressure: 976mbar Jan 9^th

Days with:

Hail: 23
Gale: 0
Thunder: 6

Snow or sleet: 24

Snow lying: 1
Fog: 35

Fog at 0900: 2

0900 WIND: N 30 NE 32 E 27 SE 26 S 43 SW 97 W 40 NW 28 Calm 43