Can I climb todayToday: Yes. Dry for the rest of the day.
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
Only these emails, and every one has a stop link. Privacy
Browse by country
The best-known areas today
Climb indoors instead
Bouldering gyms near the forest, for a wet day.
Before you go
Malibu Tunnel Boulders after rain
Malibu Tunnel Boulders: basalt boulders by the sea, in California, United States. The nearest other areas here are Horse Flats (70 km), Mount Rubidoux (121 km) and Box Springs (129 km).
Is Malibu Tunnel Boulders dry today?
The answer at the top of this page comes from NOAA's forecast and how fast basalt dries, and it's updated through the day. Nobody checks the rock in person, so touch the holds before you climb.
How long does Malibu Tunnel Boulders take to dry after rain?
Malibu Tunnel Boulders is basalt. 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 8 hours of dry weather, most of the boulders about 14 hours, and shaded ones about 19 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 Malibu Tunnel Boulders when the rock is wet?
Wet rock is slick, and pockets and cracks seep for days. If the holds feel greasy, come back later.