Can I climb todayTomorrow: No. Rain until 14:00, 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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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 Sundergrund, month by month
Sundergrund (Zillertal) after rain
Sundergrund: gneiss boulders high in the mountains, in Tyrol, Austria. The nearest other areas here are Zillertal (12 km), Felbertal (41 km) and Città dei Sassi (69 km).
Is Sundergrund dry today?
The answer at the top of this page comes from the German weather service'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 Sundergrund take to dry after rain?
the Sundergrund 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 boulders 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 Sundergrund when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.