Monday
Southeastern England will be dry and bright much of the day, early sun giving way to building cloud from the west. Rain from before dawn in Ireland and western Scotland spills eastwards and extends over Wales then western England in the morning, reaching central counties by the middle of the day. Rain setting in more persistently heavier for Wales, Cumbria and southwest England. Rain clears for Ireland, leaving showers. Fresh southwesterly winds. Highs 15C west, to 20C east.

Monday night
Rain continues to extend eastwards in the evening, heavier falls developing for central-southern counties up to dusk, setting in for several hours onward into the night. Pulses of heavy rain advance over eastern counties of England overnight. Areas of rain on and off in western areas, some showery bursts. Chance of isolated thunder. Becoming drier over central and northern England. Showery rain for Scotland. Strong winds toward south and eastern coasts. Mild, 9 to 13C.

Tuesday
A rather cloudy start with a few showers mostly in the west, becoming more widespread through the morning and middle of day into central areas, drifting eastwards. Some heavy and thundery bursts later focused toward eastern England and Scotland, also Northern Ireland, gradually easing toward dusk. More sun will break out in western areas later afternoon. Westerly wind strengthens across Ireland and southwest Britain. Highs of 16 to 18C for most areas, slightly milder east England.

Wednesday
During Wednesday morning, an area of persistent rain will arrive from the west, affecting Ireland from before dawn. Rain will be heavier for a few hours for Wales and western parts of England and Scotland. Eastern England likely stays dry until midday or early afternoon, but several hours of heavy showery rain will reach most areas. The rain staying most persistent in the northwest, risk heavy again later. Fresh southwesterly winds, strongest south. Highs 15 to 20C, warmest southeast.