Red Rock Beach
Nude beach in California, United States
Red Rock Beach is a clothing-optional beach in California, United States. It lies within Mount Tamalpais State Park, managed by California Department of Parks and Recreation. The sea is warmest in September at about 14°C (58°F) and coolest in April (12°C (53°F)). The spring water has been measured at about 32°C (90°F). Average air temperatures peak in September at 18°C (64°F). There are 8 other naturist places within 50 km (31 mi), the closest being Slide Ranch North Beach (3.2 km (2 mi)).
Weather and water temperature at Red Rock Beach
Tap a month. Averages: air 2001–2025 (NASA POWER), sea 1991–2020 (NOAA OISST).
| Month | Air | Sea | Rain |
|---|---|---|---|
| January | 9°C | 12°C | 100 mm |
| February | 10°C | 12°C | 101 mm |
| March | 11°C | 12°C | 82 mm |
| April | 12°C | 12°C | 42 mm |
| May | 14°C | 12°C | 18 mm |
| June | 16°C | 12°C | 6 mm |
| July | 17°C | 13°C | 1 mm |
| August | 17°C | 14°C | 1 mm |
| September | 18°C | 14°C | 4 mm |
| October | 16°C | 14°C | 29 mm |
| November | 12°C | 13°C | 62 mm |
| December | 10°C | 12°C | 138 mm |
Not sure what the numbers mean? Here is how warm is warm enough to swim.
Visiting
- Part of Mount Tamalpais State Park, managed by California Department of Parks and Recreation · public access: open.
- Coordinates: 37.88963, -122.63321 · OpenStreetMap
- Local law: is public nudity legal in California?
- Before you go, read our nude beach etiquette guide.
- First time? Read our guide to your first time at a nude beach.
Naturist places near Red Rock Beach
- 1Slide Ranch North Beach nude beach · CaliforniaToleratedSea 14°C in August
- 2Muir Beach nude beach · CaliforniaClothing optionalSea 14°C in August
- 3Palomarin Beach nude beach · CaliforniaClothing optionalSea 14°C in August
- 4South Rodeo Beach nude beach · CaliforniaToleratedSea 14°C in August
- 5Mile Rock Beach nude beach · CaliforniaToleratedSea 14°C in August
- 6Marshall's Beach nude beach · CaliforniaClothing optionalSea 14°C in August
- 7Baker Beach nude beach · CaliforniaToleratedSea 14°C in August
- 8Archimedes Banya naturist sauna or spa · California · best March to NovemberClothing optional
Status labels: Official · Naturist only · Clothing optional · Tolerated · Customary · Listed · Prohibited · Closed. Statuses come from open data and are not yet verified in person.
Frequently asked questions
Is Red Rock Beach clothing optional?
Red Rock Beach is listed as "clothing optional" according to OpenStreetMap (nudism=allowed). Rules can change, and clothing-optional zones are often only part of a beach, so look for signs on arrival and follow local rules. NudistMap has not yet verified this status in person. You can check what applies in United States before you go.
How warm is the water at Red Rock Beach?
Long-term sea surface temperatures (NOAA OISST, 1991–2020) range from 12°C (53°F) to 14°C (58°F) in September. Water at the shore can be a few degrees different.
What other naturist places are near Red Rock Beach?
The closest are Slide Ranch North Beach (3.2 km (2 mi)), Muir Beach (6 km (3.7 mi)) and Palomarin Beach (11 km (6.7 mi)).
Sources
Status from OpenStreetMap (nudism=allowed). Not yet verified against an official source; local rules may have changed. Data updated 2026-10-31. Wikidata Q49324484 · All data sources and licenses. © OpenStreetMap contributors.