Through the evening much of the fair-weather cloud will melt away to leave clear spells overnight. By the early hours we'll see more cloud drifting in from the west. Generally temperatures will be 12-14C, but in rural districts they could fall to 9C.
Wednesday sees an area of low pressure drifting across the north west of the UK. This brings cloud and some patchy showery rain. This could affect most parts of Wales, almost everywhere could see some rain, but some places may escape it.
The best chance of brighter but still showery weather is the south eastern corner of Wales. Highs of 20C, feeling cooler in the outbreaks of rain and stronger breeze.
Thursday sees a return of sunny spells and it will be much the same on Friday, however, we can expect some showers later on. Some wet weather may arrive in Pembrokeshire by the end of Friday, a sign of what's to come on Saturday.