Friday
A ridge of high pressure builds from the southwest. Remnants of overnight rain clears from East Anglia and the southeast early in the day. A few light showers during the morning for north Wales, northwest England and western regions of Scotland, fading. Sunny spells develop best in central, east and southern England, Ireland and eastern Scotland. A moderate west to northwesterly breeze, turning southwesterly later. Highs 20 to 23C south and east, 16 to 19C north and west.

Friday night
Strengthening southwesterly winds and rain moves into Scotland, the north and west of Ireland and Northern Ireland, some heavier rain setting in for a few hours. Rain spills toward northwest England later in the night. Dry across much of England, Wales and the southeast of Ireland all night, clear spells toward the southeast then high cloud tending to build from the west. Lighter winds in the south. Rather cool, lows 6 to 10C early in the night, then rising slightly in the north and west.

Saturday
Dry and fairly warm conditions for south and eastern England. A frontal system sweeping across the north and west of Britain and Ireland brings persistent rain accompanied by strong southwesterly winds, extending gradually southward with time. Heavy rain sets in for Wales during the day. Patchy rain reaches the Midlands into afternoon. Rain fades to lighter showers in Scotland, most frequent in the west, drier toward the east. Highs 18 to 24C, warmest southeast, quite humid.

Sunday
A cold front moving southwards brings rather cloudy skies with patchy light rain around for southern areas to start but an improving day with sunny spells developing from the north across the Midlands, then southern counties into the afternoon. Southwestern areas cloudier with some drizzle. Much of Scotland and Ireland see a fair day under a ridge of high pressure. High cloud building again toward the northwest later. Fairly warm, highs 17 to 24C.