Slack high pressure lies across southern areas, maintaining a dry and very warm day for central-southern England and Wales with light winds. Sunshine becoming hazy. Fronts slipping southwards across Scotland and Ireland bring cloudy skies and patchy rain, most persistent toward the west, but fading slowly across the Highlands. A fresh southwesterly breeze in the north-west. Feeling humid, 17 to 22C north, 25 to 30C Midlands and south, locally 32C in the south-east.
Low cloud and outbreaks of drizzly rain affects north-west England and west Wales into the evening and night, but amounts of rain small. A few drizzly showers for western Scotland and north-western Ireland. Variable cloud for central-northern England. Some murk around south-western coasts. Skies largely clear for south-east England and also north-east Scotland. Winds mostly light. Warm and humid south, 16 to 20C; around 13 to 16C north & west, but cooler at 7 to 10C Highland Scotland.
A weakening front slips south-eastwards across Britain. Fairly cloudy, with some hazy sun. A little rain or drizzle locally in central & northern areas of England & Wales. A risk of thunderstorms affecting south-east England, and locally the eastern Midlands into the evening. A few showers in western Scotland and Ireland. Light winds for most. Muggy in the south-east, but fresher toward the north-west. Highs 17 to 20C Scotland & Ireland, 23 to 30C England & Wales, warmest south-east.
A fresher westerly weather pattern moves in across the British Isles. Overnight thunderstorms in south-east England will clear away into the North Sea, leaving a misty start for some. Dry for many hours for the Midlands and eastern England. Showers in western regions in the morning will become more widespread as the day progresses, advanving eastwards. Some heavy bursts with possible thunder. Breezy, gusty at times. Highs 17 to 26C, warmest south-east, less humid.