Clayton, CA

Mount Diablo SP — Group Campsites

Availability

Each day shows how many of this campground’s sites are open.

About this spot

People visit Mount Diablo State Park for many different reasons. Some drive to the summit (located at 3,849’) to enjoy the incredible views on a clear day, while others enjoy watching the sunset on a warm summer night. With more than 160 miles of trails and fire roads, hikers, mountain bicyclists, trail runners, and equestrians can spend days exploring the 20,000+ acre park. The scenic and challenging roadways are a destination for road bicyclists from the surrounding communities. Due to the elevation change from the base of the park to the summit, layered clothing is recommended year-round. Fire restrictions occur in late spring through the fall; burning charcoal in provided fire pits is usually allowed unless a Red Flag Warning for the East Bay Hills has been issued. The park boundary gates are closed 30 minutes after sunset and reopen by 8 a.m. the following morning.

Typical weather

Water

Average water temperature
Average water temperature, January through DecemberEach point shows the monthly average water temperature in degrees Fahrenheit.49°JJanuary: average water temperature 49°F55°FFebruary: average water temperature 55°F60°MMarch: average water temperature 60°F62°AApril: average water temperature 62°F65°MMay: average water temperature 65°F69°JJune: average water temperature 69°F76°JJuly: average water temperature 76°F74°AAugust: average water temperature 74°F71°SSeptember: average water temperature 71°F64°OOctober: average water temperature 64°F56°NNovember: average water temperature 56°F50°DDecember: average water temperature 50°F

Water: Water Quality Portal — 28 field-sample stations

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