Marin Tidal Hot Springs

California’s Only Beach Hot Springs

Marin Tidal Hot Springs is the closest natural hot springs to San Francisco and can be found in a rocky grotto near Steep Ravine Beach. However, it’s geothermal vents are only accessible at low tides of -1 foot or more.

At all other times, the hot springs are submerged under the frigid waters of the Pacific Ocean. Once the vents are revealed, you only have a couple of hours to enjoy a hot soak before it gets covered back up. Marin Tidal is also known as Steep Ravine Hot Springs and Rocky Point Hot Springs.

How do I find Marin Tidal Hot Springs?

To reach the hot springs you will need to hike down a vertically inclined trail from Steep Ravine Campground to Steep Ravine Beach. If the tide is low enough, the geothermal vents can be accessed from the north side of the beach. Make sure to wear sturdy shoes and be prepared for a sharp descent.

Once you reach the beach, you will need to look for a rocky cove marked by a large boulder. If your timing is right, the telltale sulfur smell of rotten eggs should be abundant. The water in the hot springs is usually about 100 degrees Fahrenheit, so be careful not to get burned.

If the tide is exceptionally low you can actually dig your own pool in the sand near the mouth of Webb Creek.

Tips for visiting Marin Tidal Hot Springs:

• Check the tide charts before you go. The hot springs are only accessible at low tide.
• Wear sturdy shoes and be prepared for a steep hike.
• Be careful not to get burned in the hot water. A trusty thermometer (Amazon Link) comes in handy.
• Consider bringing a hose to siphon out the cold ocean water before soaking.
• Be respectful of other visitors.
• Be prepared to encounter nude soakers as Marin Tidal is a well-known clothing-optional hot springs.
• Leave no trace.
• Enjoy the experience!

Map

Rules

As a natural and fragile environment, it is important to respect the rules and regulations to preserve this special place. Visitors are not allowed to use soap, shampoo or any other chemicals in the hot springs, as they can harm the ecosystem. Also, visitors are not allowed to disturb or remove any natural elements from the area.

Marin Tidal Hot Springs are maintained by a dedicated group of area volunteers and local neighbors. Show them some love and the hot springs some respect by packing out what you packed in along with any additional trash found.