A boulder that looks reachy at first, but a little ingenuity makes this problem possible. Start with the left hand pinch, the right hand in the pocket, and a foot lock in the big hole. Short legs makes it way easier to get out of the roof, so this is perfect for smaller climbers.
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.