Can I climb todayTomorrow: Maybe. Only the sunniest, windiest boulders from 14:00, if any. Sandstone can still be wet inside when the surface feels dry.
How to read the dial
- Dry
- Fast‑drying sectors only
- Wet
- Now
- When it dries
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The best-known areas today
Climb indoors instead
Bouldering gyms near the forest, for a wet day.
Before you go
Bolonia after rain
Bolonia: sandstone boulders by the sea, in Andalusia, Spain. The nearest other areas here are Villanueva del Rosario (165 km), Las Jaras (224 km) and Cerro Muriano (225 km).
Is Bolonia dry today?
The answer at the top of this page comes from ECMWF'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 Bolonia take to dry after rain?
Bolonia 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 boulders 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 Bolonia when the rock is wet?
Wet sandstone breaks. If a hold feels cool or damp, leave it for another day.