Tonight: After a sunny evening in the southeast, cloud and drizzle will tend to spread overnight, though cooler clearer spells will develop in the north before dawn. Minimum temperature 11 °C.
Tuesday: Tuesday will be humid and cloudy for most, with some drizzle around, mostly in the morning. Warmer, brighter spells are likely in north and east Wales later. Maximum temperature 20 °C.
Outlook for Wednesday to Friday: Rain or showers are likely on Wednesday, particularly in the northwest. Thursday and Friday will be drier and brighter, but cooler as the breeze turns northwesterly.