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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Today's weather
The week ahead
Email me when it's dry
Only these emails, and every one has a stop link. Privacy
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The best-known areas today
Climb indoors instead
Bouldering gyms near the forest, for a wet day.
Before you go
Best time to climb at Calw, month by month
Calw after rain
Calw: sandstone boulders in the forest, in Baden-Württemberg, Germany. The nearest other areas here are Schwarzwald (23 km), Hessigheim (43 km) and Pfalz (81 km).
Is Calw dry today?
The answer at the top of this page comes from the German weather service's forecast and how fast sandstone dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Calw take to dry after rain?
Calw is sandstone, which soaks up rain and stays weak inside for a while after the surface looks dry. 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 18 hours of dry weather, most of the forest about 30 hours, and shaded ones about 42 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 Calw when the rock is wet?
Wet sandstone breaks. If a hold feels cool or damp, leave it for another day.