Weather log August 2025

Weather log August 2025

Key

WW = West Wales

Mids = Midlands

Lwn = Llanwnnen

AG = Aldermans Green, Coventry

CL = Church Lawford

LL = Long Lawford

ROW = Ross-on-Wye, Herefordshire

Nott= Nottingham

CITE = Coton-in-the-Elms, Derbyshire

CC = Capel Curig, Snowdonia

MH = Milford Haven

Carms = Carmarthenshire

Pembs = Pembrokeshire

COL = Climatological Observers Link

PWS = Personal weather station

MO = Met Office

NRW = National Resources Wales

EA = Environment Agency

est = estimated

inc = including

cf = compared with

srb = since records began

CC = Chiffchaff
WW= Willow Warbler
ST = Song Thrush
BB = Blackbird

VW = very wet, W = wet, RW = rather wet, A = average, RD = rather dry, D = dry, VD = very dry

Changeable start to August, some rain or showers:

Mon 4th appreciable rain much of WW and parts of Mids, over 2 inches Snowdonia.

Heatwave towards mid month (at least for Mids):

Sun 10th maxima Astwood Bank (Worc) 27.8c (warmest in UK), Pershore 27c, CL & Cov c 26c, Lwn 23.4c, Trawsgoed 22.2c.

Mon 11th widely a hot day with variable cloud and sunny spells; maxima CL 29.2c, Pershore 28.5c, Lwn 28.1c, Gogerddan 27.7c, Market Bosworth 27.5c, Shobdon & Trawsgoed 27.3c, Aberdaron 22.3c. Thundery showers affected SW Wales and Herefordshire late evening, we were away but sferics showed up as close as about 4 miles to Llanwnnen (Allt-y-Mynydd) 23- 2330, these gave only a trace of rain then further showers a further 0.7mm early hours. Radar suggested 20mm locally SW Wales although  gauges caught much less (below 5mm).

Tue 12th warm night widely, minima Aberporth 18.1c, Cov 17.2c, Pershore 16.8c, Trawsgoed 14.9c, Lwn & Shobdon 13.8c, CC 11.7c; some showers and local thunder overnight; very hot by day, max here at Lwn 31.9c one of the highest August readings here; other maxima ROW 33.4c (equal hottest in UK), Pershore 32.5c, Coleshill 31.9c, Trawsgoed 31.3c, CL 31.2c, Aberporth 31.1c, Cov 30.9c, Pembrey Sands & Sutton Bonington 30.6c, MH 27.5c.

Wed 13th warm night less widely, minima PS 18.1c, Cov 16.6c, Lwn 12.6c, Shobdon 11.7c; hot day Mids, warm WW, maxima Nott 32.2c, Coleshill 29.9c, Cov 28.9c, CL & Hereford 28.5c, Pershore 27.6c, Lwn 23.4c, Aberdaron 20c.

Thu 14th only Wellesbourne attained heatwave levels today (max 27.0c) and so for most of the Midlands  a short 3 day affair with maxima generally 24 to 26c today. This was the fourth heatwave of the year which is most unusual. West Wales did not attain threshold (3 or more days over 25c).

Fri 15th start of yet another heatwave for many locations straight after the previous one!

Maxima above 25c for inland WW and above 27c much of Mids, maxima Pershore 29.9c, CL 28.6c, Llanwnnen 26.3c, Trawsgoed 26.0c, Shawbury 25.7c, MH 24.7c, Aberporth 20.3c. It was the first really sunny day since mid July here at Lwn with an estimated 11.5 hours.

First half of Aug very warm; very dry most locations; sun ranging from rather dull to quite sunny.

Rainfall totals Aug 1st - 0900 16th:

Mona 12mm (v dry)

CC 63.6mm (r dry)

Trawsgoed 20mm (v dry)

Aberporth 8mm (v dry)

Llanwnnen 16.8mm (v dry)

PS 9mm (v dry)

MH 8mm (v dry)

Nott 7mm (v dry)

Coleshill 4mm (v dry)

Cov 2.4mm (v dry)

CL 3.6mm (v dry)

Pershore 2.2mm (v dry)

Hereford 2mm (v dry)

Sunshine totals Aug 1st - 15th:

Aberdaron 105 hrs (quite sunny)

Llanwnnen 68 hours (r dull)

Aberporth 91 hrs (ave)

Nott 104 hrs (q sunny)

Cov 97 hrs (quite sunny)

Shobdon 107 hrs (q sunny)

Sat 16th surprisingly no heatwave materialised for the Midlands due to N Sea cloud persisting most of the day, Marches saw warm sunny spells, while WW was very warm or quite hot and sunny (a heatwave still likely here). Maxima Llanwnnen & Porthmadog 27.4c, Whitchurch 27.0c, PS 26.8c, Aberporth 25.5c, ROW 25.1c (7 hrs sun), Shobdon 24.9c, CC 22.6c, CITE 21.3c, Cov 20.0c, Nott 19.6c. Valley 12 hours sun, Llanwnnen est 11.5 hrs, Aberporth 10 hrs (we were at a packed Llangrannog this afternoon).

Sun 17th widely very warm and sunny, maxima ROW 27.5c, Gogerddan & Llanwnnen 27.0c (3 day heatwave attained), CITE 26.2c, Trawsgoed 26.0c, Aberporth & PS 25.7c, Cov 25.0c, Nott 21.1c; widely 12 or 13 hours sunshine.

Mon 18th our fourth 'heatwave' of 2025 was a brief affair of 3 days, max today 23.2c rather cloudy. Most places 21- 24c, Porthmadog warmest 24.9c.

Thu 21st Aberporth 12.3 hours (sunniest place in UK), Lwn 11.5 hrs est, Midlands rather cloudy day.

Fri 22nd a very cool night widely, minima Llanwnnen 2.8c and close to a ground frost, Tirabad 3.5c, Shobdon 4.2c, CC 4.6c, Swyddffynnon 4.7c, CL 6.5c, Astwood Bank 9.6c, MH 11.0c. Pershore 25.1c warmest in UK, Aberporth again sunniest 12.8 hrs (Lwn est 12 hrs, ROW 10 hrs). WW a sunny day, Mids sunny intervals.

Sun 24th Coventry has been rather dull of late, (as has much of the Mids I imagine) just 8 hours in the last 6 days, in contrast a couple of sunny days here at Lwn; Hereford & Pershore max 26.4 warmest in UK.

Bank Holiday Monday (25th) looking hot for Mids to be followed by an unsettled end to Summer 2025:

BH Mon 25th indeed hot for the Midlands and inland Wales, very warm elsewhere, Hawarden max 29.6c a Welsh August BH record (previously Crossway, Monmouthshire max 26.6c) although note the BH only started in 1971. Other max ROW 29.3c, Astwood Bank 29.2c, Hereford 29.0c, CITE, Coleshill & Wellesbourne 28.8c, Nott 28.7c, Cov 28.4c, Gogerddan 28.3c, Trawsgoed 28.0c, Lwn 27.7c, CL 27.4c, Aberporth & Whitchurch 25.8c, Aberdaron 21.7c. Unbroken 13 hours sun at Nottingham (also Wellesbourne 12.7 hrs).

Tue 26th Kings Newnham (Rugby) has had a fortnight without rain now, Church Lawford & Bablake both had tiny amounts in that time.

Wed 27th scattered showers and local thunder Mids (lightning just off the Pembs coast first thing too). End of KN dry spell (1mm).

Thu 28th Resolven (NRW) in the Neath valley caught over 60mm overnight from persistent and at times torrential downpours coming off the Bristol channel with further showers the daily total 81mm.

Fri 29th scattered showers, turned thundery Mids afternoon, inc Cov 1530, with Finham (EA) catching 9mm in 15 minutes cf just 1mm Bablake all day.

Sun 31st showery, isolated thunder Mids, some very heavy and prolonged downpours parts of WW, here at Lwn downpours, some torrential during the evening and night (into Sept ) gave 25.8mm making it the wettest day of Summer 2025.

Nature notes

Sat 2nd no Swifts seen but chicks are still in the end nest west side.

Sun 3rd single Swift around the church for brief spells dusk.

Mon 4th Llanybydder evening: half dozen screaming Swift old warehouse, droppings beneath evidencing one nest

Aberduar chapel: 8 screaming Swift, much droppings and staining evident. 7 or 8 areas of wall staining from the soffit and around half dozen poo piles on the ground beneath.

Rhydybont chapel: no Swifts seen here but all the HM nests still intact with much activity from around 15 birds some chicks being fed in the air.

Dusk southern forestry possible snatch of distant Njar heard in fading light (2130) half hour after sunset coming from down by road it seemed as we headed back down to main track.

Wed 6th after sunset lucky to catch an adult Swift entering the nest that still has chicks (furthest west side) it screamed a bit too.

Sat 9th: single Swift among the Martins and Swallows feeding above the gardens afternoon, could not hear the chicks the other night. Then a pair  eve which were above Church  dusk. 

Farmer cutting hay for the second time this season (first was in June), most years they only manage one.

Sun 10th Lampeter on the way to Coventry single Swift early afternoon.

M50 lots of trees with yellow flowers similar to Laburnum although could not be as these flowered in Spring.

Tue 12th 12 o clock ride, Binley Woods: Chiffchaff singing first one heard since probably early July.

Wed 13th 12 o clock ride again: Yaffle laughing.

Driving back drought stress evident to some trees especially ROW area which saw the hottest weather yesterday. These trees at least partly browned off and Autumn looking.

Fri 15th Chiffchaff heard from garden.

2 Swift among hirundines over the gardens this evening, latest hereabouts was Aug 20th 2021 with 8 over Aberaeron.

Tue 19th 80 plus hirundines above the village this evening getting ready for the off perhaps?

Sun 24th still hirundines but much fewer than a week back.

Since mid month some of the Ash trees leaves shrivelled and died could be drought stress coupled with die back? Unfortunately the worst affected is one that was quite heavily lopped in July so hopefully it comes back next year.

Sun 24th plenty of hirundines back this evening.

Mon 25th (BH) Forestry evening: dried out little mud and only water trickle down by the main road track. Some trees suffering drought stress especially the recent planted in 2021 (Birch and Rowan mainly|). 

Generally some trees on the turn (in the Mids they were on the turn in late July).

Llanybydder car park: plenty of HM, also back above our garden this evening.

Apples looked ready from mid month and now dropping (this about a month early).

Summary August 2025

Warm; below average rain, sun around average

A very dry month much of Midlands.

West Wales, many places had a dry month, just locally up to average.

Rainfall totals August 2025

Mona, Anglesey 35mm (dry)

Capel Curig, Snowdonia 152mm (near ave)

Aberdaron, Llyn Peninsular 36mm (dry)

Trawsgoed, Ceredigion 57mm (rather dry)

Aberporth, near Llangrannog 34mm (dry)

Llanwnnen 63.8mm (65%)

Pembrey Sands, Carms 50mm (r dry)

Milford Haven, Pembs 46mm (dry)

Nottingham 18mm (very dry)

Shawbury, Salop 24mm (dry)

Coleshill 10mm (v dry)

Coventry, Bablake School 8.2mm (13%)

CL, Warks 12.6mm (20%)

Pershore, Worc 8mm (v dry)

Hereford 20mm (dry)

King's Newnham EA gauge (near Rugby) 12.2mm

National Resources Wales (NRW) rain gauges 

Note some areas had heavy downpours overnight 31st- Sept 1st eg Dyli 49mm and Bethesda 40mm 00-0900 1st and so these would have been up to average for August were they 09-0900.

Llyn Cefni, Ynys Mon 35mm (dry)

Bethesda Quarry (Gwynedd) 91mm (r dry)

Cwm Dyli (Snowdonia) 202mm (near ave)

Abersoch (Llyn Peninsular) 43mm (dry)

Corris (near Machynlleth) 118mm (r dry)

Bow Street (near Aberystwyth) 58mm (r dry)

Pontrhydfendigaid (near Tregaron, Ceredigion) 59mm (dry)

Rhos Ymryson (near Gorscoch and 5 miles NW of Lwn) 73mm (r dry)

Cellan (2 miles NE of Lampeter) 44mm (dry)

Pencader (Carms) Faulty still: In spite of below faulty again month end 26mm at Lwn 09 1st Sept cf  Pencader 1mm showing bad error.

Thank you for reporting the issue with our Pencader rain gauge. There has been a fault identified in an underground cable at the site which is within Pencader Sewage Treatment Works which is not easily accessible so we will be reconfiguring the gauge set up with the help of one of our contractors. Presently there is temporary telemetry logger monitoring the site and this was not feeding the website. This has now been re-configured so should provide rainfall data from tomorrow.

Abergorlech (Brechfa Forest, Carms) 84mm (r dry)

Rhydargaeau (Carms) 89mm (r dry)

Garnswllt (near Ammanford, Carms) 95mm (near ave)

Felinfoel (near Llanelli, Carms) 81mm (r dry)

Southgate, Gower 42mm (v dry)

Ferwig (near Cardigan) 37mm (v dry)

Maenclochog (near Preselis, Pembs) 101mm (r dry)

Tenby (Pembs) 69mm (r dry)

Bolton Hill (near Haverfordwest, Pembs) 48mm (dry)

COL stations rainfall Aug 2025

Llansadwrn 49.5mm (51%)

Ludlow, Salop 13.3mm (20%)

Alvechurch, Worc 15mm (20%)

Warstock, Brum 17.5mm (25%)

Alcester (Great Alne) 14mm (23%)

Cosby, Leic 5mm (8%)

Hinckley 12.3mm (19%)

Towcester, Northants 23.3mm (36%)

Sunshine totals August 2025

Aberdaron c 212 hrs

Llanwnnen estimated  164 hrs (101%)

Shawbury c 160 hrs

Coventry, Bablake School 162 hrs (93%)

Shobdon, Herefordshire 194 hrs (ave)

COL stations sun:

Ludlow 173 hrs (97%)

Alvechurch 159 hrs (103%)

Cosby 179 hrs (104%)

Towcester 208 hrs

Summary Summer 2025

Very warm, rather dry/ dry generally; sunshine between rather dull to quite sunny and so generally around average.

This was the warmest Summer on record for the UK, however here in WW 1995 still holds the crown. CET over 2c above average (wrt 1961-90 World Met Organisation standard period).

Mean CET 17.7c equal with 1976.

Coventry: This has been the warmest summer on record (to 1892). 0.5C warmer than 2006 & 2018, the previous warmest summers

Here at Lwn all 3 above 16c has not happened before. However not an especially sunny Summer hereabouts nor really dry (thanks to a rather wet June).

Midlands dry or very dry Summer, WW dry to average.

Sunshine generally around average (from rather dull to quite sunny).

Rainfall Summer 2025

Mona 153mm (r dry)

Capel Curig 476mm (average)

Trawsgoed 233mm (ave)

Aberporth 114mm (dry)

Llanwnnen 215.5mm (79%)

PS 193mm (r dry)

MH 165mm (r dry)

Nott 83mm (very dry)

Coleshill 87mm (v dry)

Coventry 108.6mm (60%)

CL 92.4mm (52%)

Pershore 63mm (very dry)

Hereford 69mm (v dry)

Summer 2025 sunshine

Aberdaron 563 hrs (near ave)

Llanwnnen est 461 hrs (91%)

Cov 569 hrs (101%)

Shobdon 568 hrs (ave)