Today is looking dry, as is tomorrow, so I'd guess that brean will be dry-ish with some streak lines and seepage on the RHS. Other options would be cheddar (likely to be some wet some dry, pick a crag near the top of the gorge), Wye or one of the Somerset quarries. And of course Avon should be ok, but sounds like you are after sport, of which there is a limited amount. Let us know if you decide where you are heading as we're planning to get out tomorrow as well.