This Evening and Tonight: After a fine end to the day, skies will turn cloudier overnight with the chance of a few showers across central and southern parts of Wales. Temperatures will hold up for most and it will begin to feel more humid. Minimum temperature 9 °C.
Thursday: Showery outbreaks of rain will become more widespread through Thursday, particularly in the south with heavy and locally thundery downpours possible. Temperatures will be cooler than on Wednesday. Maximum temperature 20 °C.
Outlook for Friday to Sunday: Outbreaks of rain in the north through Friday, brighter in the south. Mainly sunny over the weekend, but scattered thunderstorms in the south. Becoming very warm and fairly breezy.