Saturday
Cloudier conditions will spread across Ireland and Scotland, bringing spells of rain at times. Western parts of England and Wales may also see some patchy rain later in the day. Further east, it will remain dry, sunny and very warm, with locally hot conditions continuing across central, southern and eastern England, although a few afternoon showers may develop. Highs of 29 to 30C across eastern Wales and eastern England, with 18 to 20C elsewhere.

Saturday Night
Cloud and outbreaks of light rain will affect eastern Ireland, Wales, western England and parts of Scotland through the evening and overnight. Further east, it will stay dry with largely clear skies. Minimum temperatures of 15 to 16C across Ireland and Wales, around 17C in Scotland, and 18 to 20C across England.
 

Sunday
A marked change arrives as cooler Atlantic air spreads across the British Isles. Temperatures will return closer to seasonal values, accompanied by a brisk westerly breeze. Northern Ireland, western Scotland and northwestern England will see extensive cloud and outbreaks of rain, while brighter conditions develop further south and east. Highs of 16 to 18C across Ireland and Scotland, and 22 to 24C in southeast England.

Monday
A largely cloudy but mainly dry day across much of England. Western Wales may see a few showers, while showers become more widespread across Ireland and Scotland during the afternoon, although most will be light. Highs of 17 to 19C across Ireland, Wales and Scotland, and 24 to 26C across England.