I have lost plenty of days due to rain in Magic I'm afraid, more than at any other venue I can think of (except the UK obviously). There are a few faces that stay dry for a bit but persistent rain will soak it. Added to this, the valley seems to get any rain that's passing and being in a dense wood the rock can take a day or two to dry even when it stops raining.
Sorry if that sounds pessimistic, but on the positive side... I have managed to climb at Murgtal when its been raining up at Magic. Murgtal is maybe an hour or so from Magic, back towards Zurich and is a nice little spot with some quicker drying blocks as well as more in the trees. There's also Chironico over in Ticino which dries out quicker and gets a bit less rain than the more alpine Magic Wood. Actually I prefer Chironico full stop; more variety, more problems, easier to get around the blocks etc. It's also right next to Cresciano but that was well wet each time I've tried to climb there!
Good luck, but I'm sure it won't rain flat out for the week.
