Tonight will be mainly clear spells. A freshening northerly breeze will keep things cool but not too chilly. The odd shower may skirt western parts of Wales from time to time, but it will be dry elsewhere.
Tuesday will be mainly dry and bright with the odd shower further west. Again it will be rather breezy and cool feeling with highs of around 15-16C for many but could reach up to 18C
The rest of the working week sees spells of wet weather and plenty of cloud with the odd bright interval sprinkled in between. Temperatures recover a little from Tuesday to the sort of levels we'd expect at this time of year.