The normal start for taller folk involves a big move to the left to a pocket that is hard to target, but if you have strong, small fingers you can climb up on pockets directly above the start hold. The difficulty is getting the feet to stick. I found I could use a high marginal heel hook for my left foot. There are a variety of ways to use the large hold in the middle, but the move from there is quite long, involving a little dynamic push to the better holds at the top. The top is not technically difficult, but need practice because it feels quite airy to be over the rock below.
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.