San Onofre State Beach
Nude beach in California, United States
San Onofre State Beach is a well-known naturist beach in California, United States. The sea is warmest in August at about 21°C (70°F) and coolest in January (15°C (59°F)). Average air temperatures peak in August at 23°C (73°F), and the best time to visit is July to September. There is one other naturist place within 50 km (31 mi), the closest being Glen Eden Sun Club (42 km (26 mi)).
Weather and water temperature at San Onofre State Beach
Tap a month. Averages: air 2001–2025 (NASA POWER), sea 1991–2020 (NOAA OISST).
| Month | Air | Sea | Rain |
|---|---|---|---|
| January | 13°C | 15°C | 57 mm |
| February | 13°C | 15°C | 67 mm |
| March | 14°C | 15°C | 32 mm |
| April | 15°C | 16°C | 20 mm |
| May | 17°C | 17°C | 8 mm |
| June | 19°C | 19°C | 1 mm |
| July (best) | 22°C | 21°C | 4 mm |
| August (best) | 23°C | 21°C | 3 mm |
| September (best) | 23°C | 21°C | 4 mm |
| October | 20°C | 20°C | 16 mm |
| November | 17°C | 18°C | 26 mm |
| December | 13°C | 16°C | 60 mm |
Not sure what the numbers mean? Here is how warm is warm enough to swim.
Visiting
- Website: parks.ca.gov
- Coordinates: 33.37920, -117.57300 · 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 San Onofre State Beach
- 1Glen Eden Sun Club nudist resort · CaliforniaNaturist only
- 2Black's Beach nude beach · California · best July to SeptemberToleratedSea 21°C in August
- 3Olive Dell Ranch nudist resort · CaliforniaClothing optional
- 4Zoro Garden Nudist Colony naturist park or area · California · best July to SeptemberClosed
- 5Land's End nude beach · CaliforniaListedSea 20°C in August
- 6Casa Oliver nudist resort · CaliforniaClothing optional
- 7Nude Bowl naturist park or area · California · best June to SeptemberClosed
- 8Deep Creek Hot Springs clothing-optional hot spring · California · best June to SeptemberTolerated
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 San Onofre State Beach clothing optional?
San Onofre State Beach is listed as "known naturist place" according to Wikipedia/Wikidata naturism listings. 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.
When is the best time to visit San Onofre State Beach?
Based on 2001–2025 climate averages (NASA POWER), the most comfortable months are July to September. July averages 22°C (72°F) and January 13°C (56°F).
How warm is the water at San Onofre State Beach?
Long-term sea surface temperatures (NOAA OISST, 1991–2020) range from 15°C (59°F) to 21°C (70°F) in August. Water at the shore can be a few degrees different.
What other naturist places are near San Onofre State Beach?
The closest are Glen Eden Sun Club (42 km (26 mi)), Black's Beach (61 km (38 mi)) and Olive Dell Ranch (77 km (48 mi)).
Sources
Status from Wikipedia/Wikidata naturism listings. Not yet verified against an official source; local rules may have changed. Data updated 2026-10-31. Wikipedia · Wikidata Q7415028 · All data sources and licenses.