It depends on what you like. For steep, gym-like pocket pulling, I suggest Le Toit Ouvrant, a 6a at Franchard Isatis, and it’s 6a neighbor, L’Angle d’Incidence (which was a bit harder, with a trickier topout). I’m 5’ 5” but they both have a lot of pockets you might be able to use for intermediate holds on reachy moves. For a slopery traverse on a short boulder, try La Traversée des Plats Réels 6a at Franchard Hautes Plaines. For straightforward face climbing on a boulder that is not too tall and has a flat, sandy landing, check out Le Surplomb du Lépreux at Elephant (although I’m not sure if it has reachy moves). Pol Pot 2 and Napoléon at Rocher de la Reine are both 6a+ so a bit harder but they might be good options; Le Vol du Bourdon is a 6a at that area that might work too, although I haven’t tried it. I hope this helps. Good luck!
No Climbing Today!
^
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.