Can I climb todayTomorrow: No. Rain until 17:00, and the rock stays wet after it.
How to read the dial
- Dry
- Fast‑drying sectors only
- Wet
- Now
- When it dries
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Bouldering gyms near the forest, for a wet day.
Before you go
Val Calanca after rain
Val Calanca: gneiss boulders in the forest, in Grisons, Switzerland. The nearest other areas here are Biasca Piantagione (13 km), Ticino (17 km) and Cimaganda (20 km).
Is Val Calanca dry today?
The answer at the top of this page comes from MeteoSwiss's forecast and how fast gneiss dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Val Calanca take to dry after rain?
Val Calanca is gneiss. It sheds rain quickly, though cracks, pockets and tufas can seep for days after heavy rain. These times are the model's estimates, tuned on Fontainebleau sandstone and not checked here. After a proper soaking (2 mm of rain or more), sunny, windy boulders need about 7 hours of dry weather, most of the forest about 12 hours, and shaded ones about 17 hours. A light shower needs less. Wind, sun and dry air shorten the wait, and above about 92% humidity the model won't call the rock dry.
Can you climb at Val Calanca when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.