Can I climb todayToday: Yes. Dry from 11:00.
How to read the dial
- Dry
- Fast‑drying sectors only
- Wet
- Now
- When it dries
Blok Sessions
Today's weather
The week ahead
Email me when it's dry
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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 Mount Penteli, month by month
Mount Penteli after rain
Mount Penteli: boulders in the forest, in Attica, Greece. The nearest other areas here are Agriliki (7 km), Daskaleio (30 km) and Tinos (123 km).
Is Mount Penteli dry today?
The answer at the top of this page comes from ECMWF's forecast and how fast the rock dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Mount Penteli take to dry after rain?
We don't have Penteli's rock type on record, so the model dries it slower than granite or limestone, to err on the wet side. 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 11 hours of dry weather, most of the forest about 18 hours, and shaded ones about 25 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 Mount Penteli when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.