Thursday
A complex series of fronts will trail eastwards across the British Isles. Outbreaks of rain, most persistent for northwest England, southern Scotland, Northern Ireland and western Ireland. Rain on and off for west Wales too. A little patchy rain elsewhere across England, while many southern and eastern areas will stay largely dry, but rather cloudy. Drier also for northern Scotland. A brisk westerly breeze in the south. Lighter winds toward the north. Highs widely at 14 to 19C. Cooler in the northwest while parts of the southeast could reach 21C.

Thursday night
Rain continuing for the northern half of the country overnight from Thursday into Friday. Winds picking up here too. The heaviest bursts for Northern Ireland and southern and central parts of Scotland. Dry elsewhere to the south and staying rather cloudy here too with the exception of the far southeast where there will be clearer skies. Overnight lows widely from 8 to 14C, cooler in more rural areas.

Friday
High pressure builds across southern Britain, and a warm, humid southwesterly airflow moves in from the Atlantic. Fronts are likely to affect Ireland and western Scotland with low cloud and rain or drizzle, wettest for the West Highlands. Murk and dampness also affects western coasts of England & Wales with fog around coasts and hills. Largely dry for the Midlands, south and east, and feeling warmer here. Highs from 14C in the northwest of Scotland to 22C in parts of central and southern England.

Saturday
Dry and warm weather for central, south & eastern England & Wales. Some hazy high cloud at times but plenty of sunshine too. Murky near western coasts, and fairly cloudy for many north & western districts as the remnants of fronts trail across these areas. A little rain or drizzle for western hills, becoming steadier rain at times for western Scotland & Ireland. A general south to southwesterly breeze. Feeling humid with highs at 20 to 25C in the southeast, cooler in the north and west.