If you are in to slabs, this is definitely worth the walk up the hill! There is an interesting hand foot match to go up to a funny pinchy hold. The boulder is slight high, but the top out is good!
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.