Straightforward traverse from right to left on good holds with solid heel- and toehooks. The last part including the mantle can be tricky. There is a good sloper and a little crimpy edge to hold on to, but the ledge might feel a bit too small and slanted. Stay calm and push through.
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.