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Wet Weather
From SWMC Wiki
If it's been wet try these fast drying or steep crags.
South East Wales Sandstone
The Darren - The Terminal Overhanging Wall has some fine routes which stay dry in the rain.
Sirhowy - If it's not dry here then nowhere will be locally.
Inland Limestone and Bridgend Area
Ogmore - Pick your spots.
Nash Point - A pretty good bet.
Gower
Trial Wall - dries v quick, esp once the suns on it in the afternoon
Rams Tor - Quick to seep but dries off just as fast in the afternoon sun.
Great Tor - East Ridge is sheltered from westerlies. Bad weather should improve the 'mountain experience'.