The start holds are really high, so you have to climb into the boulder. This super cool line has a bit of an approach (20 minutes) and is very isolated, but definitely worth a visit. Make sure you bring enough pads and a spotter!
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.