Hi Helen!Thanks for the informative post. I would add that it is worthwile to start following the forecast days leading up to the trip, and take a look at reports of actual weather (meteoblue allows you to see the actual, realised weather from yesterday) to understand how the weather was before you arrive, what to expect and also to choose crags according to this information.Also, when we talk about rain, it is different if it was a few big showers or continuous drizzle for hours - the amount of precipitation could have been the same. Following Meteoblue’s app allows you to see this, too, which is good information prior to the arrival, but also when planning for climbing and rest days. The forecasts aren’t always right, so be flexible in your planning.For me Bleau Meteo seemed to be a valuable resource, although in the end their information was very vague precisely when I was uncertain about the conditions. On rainy days or a day after you can always go for a walk in the forest and study the rock. At the same time you can familiarize yourself with different areas, covering multiple sectors in a day, find new projects and get a general idea if the area or your new project could be fast drying, or not.Happy climbing!
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.