Cool but often dry start to the month:
Mon 4th surprisingly cool night, close to grass frost Mid Wales and the Marches, the Llanwnnen air min being 2.2c, I did n't expect it so cool and so did n't put a sensor on the lawn, but a grass frost was quite likely! Coldest place officially was Tirabad, near Llandovery, min 2.8c, while Shobdon (Herefordshire) fell to 0c on the grass. Last year some places did have a July ground frost, on the 31st the air min was just +0.7c here at Llanwnnen with ground frost witnessed. Bright morning Midlands but jones WW with cloud pm with a little rain or drizzle over WW and later North Mids. Temps near or below average which is 18 -22c now at this the warmest time of year (Pershore College 21.1c, Aberporth 19.5c)
Tue 5th WW little rain overnight, mainly dry Midlands. Dry with sunny spells, most places rather cool but felt pleasant in the sun, South Mids near normal (Pershore 20.8c, Swyddfynnon 14.9c)
Wed 6th cool night (Llanwnnen 3.7c, Tirabad 4.5c). Generally dry with sunny intervals, near or below average temps (Coventry 21.0c, Llanwnnen 19.8c, Capel Curig 15.4c)
Unsettled but generally warmer and quite humid for a time:
Thu 7th generally cloudy, light rain and drizzle at times, particularly WW with some heavy over Snowdonia (Capel Curig 28mm), parts of Midlands mostly dry with a few sunny intervals. Cool WW, nearer normal Midlands and quite humid (Little Rissington 20.9c, Aberporth 17.4c, Aberdaron max 14.7c)
Fri 8th rain at times overnight, only small amounts much of the Midlands, rather warm night (Pershore 15.5c, Pembrey 15.2c min). Dry day with some sunny intervals, temps near normal but a few spots fairly warm (Pershore 23.2c, Llanwnnen 21.4c, Trawsgoed 18.8c)
Sat 9th rather a warm humid night with some rain, especially over NW Wales and North Mids (min Pershore 16.0c, Mumbles 15.6c). Some heavy rain for Mid and North Wales and the Midlands morning, mostly dry and rather warm afternoon Mids, still cloudy with a little rain or drizzle WW and further rain here evening. Snowdonia saw high rainfall totals today, radar suggesting over 4 inches locally (Wellesbourne 23.6c, Trawsgoed 19.8c, Aberdaron 15.0c, Capel Curig 67mm wettest in UK)
Sun 10th warm night a little rain in places. Warmest night so far this year here at Llanwnnen, min 14.9c (Pershore 17.1c, Trawsgoed, Pembrey & Mumbles 15.7c). Mostly cloudy WW with occasional rain or showers, heavy in places, some showers for Midlands but many places stayed dry with sunny intervals. Temps close to average, wetter parts of WW cool though, parts of the Midlands rather warm and bright (Wellesbourne 22.8c, Trawsgoed 19.9c, Capel Curig 15.4c)
Mon 11th another very mild night (Nottingham 15.1c, Pembrey 15.0c) with occasional rain or drizzle, mostly WW, with Snowdonia having more heavy rain (Capel Curig 42mm 12 hours). Any lingering rain cleared morning leaving just the odd shower, much cloud but some sunny intervals. Cool to average temps (Pershore Collesge 21.9c, Capel Curig 14.8c, Pennerley, Salop max 13.9c)
Cool down, some rain Wales, Midlands often dry:
Wed 13th cooler night (Shawbury & Shobdon 6.1c, Llanwnnen 6.3c). Sunny intervals and a few showers, temps still generally below average, especially close to Cardigan Bay with the NW breeze off the sea (Pershore 19.6c, Pembrey 18.3c, Swyddfynnon 15.3c, Pennerley 15.2c)
Thu 14th few showers overnight in places, a dry day with sunny spells, most places rather cool, decidedly so again for Cardigan Bay, while some sheltered areas scraped average (Pershore 21.7c, Pembrey 18.8c, Aberporth 15.3c)
Fri 15th mostly cloudy with a little rain or drizzle, this chiefly affecting WW, some heavier bursts over NW Wales for a time. Although we were in a rather warm humid airmass the cloud and moisture supressed temps and for much of WW another cool day, except where brief sunny intervals occurred as at Aberporth (Pershore College 22.1c, Aberporth 18.6c, Aberdaron 15.7c, Portmadog 16.4mm)
Sat 16th warm night (Notttingham min 17.2c, Trawsgoed 16.7c, Aberdaron 13.6c). Cloudy and generally cool day WW with some rain and drizzle, Midlands warm with some sunny intervals but drizzle in places evening (Coleshill 24.5c, Aberporth 18.8c, Aberdaron 14.9c)
Warmed up with brief hot interlude, plenty of sunshine:
Sun 17th warm night, less so N Wales & N Mids; a little rain or drizzle in places, an area of heavier inland from Aberysywyth (Coleshill min 17.0c, Mumbles 16.0c, Llanwnnen 15.8c was the warmest night so far this Summer, Trawsgoed 16mm rain overnight). Rather warm and humid day for many, best of the sunshine Midlands and Anglesey, with parts of WW still cool and rather cloudy (Wellesbourne 26.7c, Llanwnnen 23.6c, Trawsgoed 20.6c, Aberdaron max 14.8c, Shawbury 13.3 hrs)
Mon 18th very warm, locally hot, and humid with sunny periods (Llanwnnen 28.3c, Hereford 28.0c, Trawsgoed 25.5c, Valley 19.3c)
Tue 19th a sudden heatwave for a day! Widely very hot, some places having the hottest day for 10 years. Here at Llanwnnen it reached 32.6c the second highest temperature recorded here and coincidentally the hottest day for exactly a decade (33.6c 19th July 2006)! Numerous places even on the coast exceeded 30c today, highest of all in our regions being Pershore 33.4c, while St Helier was hottest in the British Isles at 35.2c (Porthmadog 32.4c, Valley 32.2c, Gogerddan 31.8c, Trawsgoed 31.7c, Hereford 32.7c, Coventry 31.8c)
Swift postscript: Good news: The hot spell just after mid month saw fantastic frenzied Swift activity, and I could hear chicks on 4 of the nests so nowhere near a disaster! Up to 14 screaming Swifts observed on the very hot evening of the 19th.
Mon 19th returned to the slopes of Mynydd Pencarreg in the hope of hearing Nightjars as in June but no luck, however there was a wonderful Grasshopper Warbler serenading the Full Moon as it was getting dark after 2130 and only 50 metres off the lane.
Tue 20th: Thought the heat had zapped the Hydrangea as when I arrived home in the evening all the blue flowers had wilted, however I gave it a good drink and in the morning it was right as rain!