Low pressure to the north of Scotland will drift north and fill, with a deepening low moving northeast towards the Low Countries. Sunny intervals for Scotland and Ireland but with some showers, especially in the west. Dry across much of England and Wales with the best of the sunshine in northern and western areas. Becoming cloudier over the east and southeast of England, though, with rain some heavy and with a risk, perhaps, of thunder. Winds mainly west or southwesterly, light to moderate. Daytime highs 14 to 17C in northern and western areas, 19 to 21C across central parts but with any heavier rain depressing values in the east and southeast of England.
The rain clears from the east to give a dry night for many parts, although showers will clip Western Scotland, Northern Ireland, Northwest England and North Wales. Overnight lows down a cool 6 to 9C in the north and for some western parts, otherwise holding up into double figure.
A ridge of high presssure will build north across much of the British Isles. A day of sunny intervals but also showers and some of these may be quite sharp, especially over Scotland and Northern England. The showers will become few and far between overnight, however. Winds becoming moderate, locally fresh, from around a westerly direction. Highest temperatures 13 to 17C in the north and west, up to 19-22C for the Midlands and Southeast.
A ridge of high pressure extending north across much of the British Isles will decline as low pressure tracks northeast to the northwest of Ireland. Confidence low to moderate in distribution and timing of rain. Rain, some heavy, moving northeast across Ireland, much of Scotland, although the far north may stay dry, and later Northwest England. Dry for much of England and Wales, though, with some sunshine and just an isolated shower. Highs 13 to 17C in the north and west, 19 to 22C in the south and east.