Really fun 7b+ on crimps. It starts lower than you think, in a small cave, but a sneaky knee-bar helps. Pull out of the cave to the right and keep climbing. The holds are all good, it just takes a bit of endurance.
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.