Mount Diablo State Park - United States

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About Mount Diablo State Park

Mount Diablo State Park is a 20,000-acre state park in Contra Costa County near Walnut Creek, California, dominated by a distinctive 3,849-foot summit visible from much of the San Francisco Bay Area. The park features panoramic views spanning over 100 miles on clear days, diverse ecosystems including oak woodlands and chaparral, impressive rock formations, and over 160 miles of hiking trails. RV visitors should note strict vehicle length restrictions: the park accommodates only RVs and motorhomes up to 20 feet long, and trailers are prohibited due to steep grades, tight curves, and blind turns on park roads. Summer temperatures range from 75 to 82°F, while winters are mild but wet from November through March. Reservations through ReserveCalifornia.com are essential, particularly on weekends.

RV quick facts for Mount Diablo State Park

Detail	Information
Max RV length	20 feet (motorhomes and trailers)
Road restrictions	Steep grades, tight curves, blind turns. No vehicles over 20 feet or trailers on Mount Diablo Scenic Highway
Full hookups	Not available; potable water at Lower and Upper Summit parking lots
Operating hours	Gates open 8am, close at sunset; visitors must depart before dark
Reservation window	Through ReserveCalifornia.com; weekends book quickly

Featured RV rentals for Mount Diablo State Park

Dodge Campervan

2006 • New listing

$185 USD /night

Mercedes-Benz Campervan

2006 • New listing

$185 USD /night

Thor Motor Coach Class C

2023 • 4.9(8)

$280 USD /night

Winnebago Class B

2026 • New listing

$229 USD /night

Kamran's Intech Sol Dawn Rover Travel Trailer

inTech Travel Trailer

2021 • 4.8(5)

$160 USD /night

"Star-Lord" 2024 Winnebago 2301BHS Travel Trailer

Superhost

Winnebago Travel Trailer

2024 • 5.0(1)

$147 USD /night

Casita Spirit Deluxe – Lightweight Adventure Egg

Casita Travel Trailer

2020 • 5.0(1)

$153 USD /night

ZWS Luxury 2026 Thor Motor Coach Geneva Class C

Thor Motor Coach Class C

2026 • New listing

$275 USD /night

Blake's Jayco Slx Jayflight 265 BHS Travel Trailer

Jayco Travel Trailer

2025 • New listing

$250 USD /night

RV Rentals Mount Diablo State Park

Mount Diablo State Park, CA, United States

How to get to Mount Diablo State Park

Mount Diablo State Park is accessible from major Bay Area cities: approximately 10 miles from Walnut Creek, 30 miles from Oakland, and 38 miles from San Francisco. Access via Highway 680 to Walnut Creek, then Diablo Road east to North or South Gate entrances. Park roads feature steep grades, tight curves, and blind turns, restricting RVs and trailers over 20 feet from driving to the summit. San Francisco International Airport is the nearest commercial airport at 38 miles.

Best time to visit Mount Diablo State Park

Spring (March-May) offers mild temperatures around 60-75°F and vibrant wildflower displays peaking in late March and April, especially in Mitchell Canyon. Late summer through early fall (June-September) brings warm, clear days ideal for summit views, though crowds peak and temperatures exceed 80°F. Fall and winter (October-April) feature fewer visitors and crisp air for distant views but expect occasional rain from November through March. Early morning visits year-round help avoid midday heat and crowds.

Jan 102 mm

55°F - 39°F

Feb 86 mm

57°F - 41°F

Wettest month; wet roads possible; peregrine falcon habitat closure through July 31

Mar 60 mm

61°F - 43°F

Wildflower peak; rain expected; peregrine falcon habitat closure through July 31

Apr 40 mm

66°F - 46°F

Wildflower peak continues; peregrine falcon habitat closure through July 31

May 20 mm

75°F - 52°F

Peak fire season begins; peregrine falcon habitat closure through July 31

Jun 5 mm

82°F - 57°F

Fire danger season; possible closures

Jul 0 mm

82°F - 55°F

Peak crowds and heat; fire danger high; earliest sunset departure required; peregrine falcon habitat closure through July 31

Aug 0 mm

82°F - 55°F

Driest month; clear views; fire danger season continues

Sep 2 mm

81°F - 54°F

Fire danger continues

Oct 20 mm

72°F - 48°F

Fall colors; start of wet season

Nov 70 mm

63°F - 45°F

Rainy period begins; muddy trails possible

Dec 109 mm

55°F - 39°F

Coldest, wettest month; wet conditions expected

Things to do at Mount Diablo State Park

Mount Diablo Summit Trail Strenuous
RV parking available
A strenuous trail to the 3,849-foot summit where clear-day views extend over 100 miles across the San Francisco Bay Area and Sierra Nevada mountains. The challenging climb gains significant elevation but rewards hikers with panoramic vistas visible from much of Northern California. Parking available at trailheads. alltrails.com/parks/us/california/mount-diablo-state-park
Falls Trail Moderate
RV parking available
A scenic descent through oak woodland to seasonal waterfalls up to 100 feet high, most impressive during winter and spring months when water flow is highest. This moderate hike offers shade and a cooler alternative to ridge trails, with access near Donner Canyon. Good parking available in adjacent day-use areas. alltrails.com/parks/us/california/mount-diablo-state-park
North Peak Trail Strenuous
RV parking available
A strenuous alternate summit route featuring dramatic ridge walking and rock formations with excellent visibility on clear days. This challenging trail provides quieter conditions than the main Summit Trail with comparably impressive vistas. Best hiked in fall and spring. Parking available at trailheads. alltrails.com/parks/us/california/mount-diablo-state-park
Black Hills Loop Trail Strenuous
RV parking available
A scenic loop offering diverse terrain through chaparral and oak woodland with panoramic views of the surrounding valleys and mountain ranges. This moderate to strenuous trail provides an alternative to the main summit routes. Parking available at staging areas. alltrails.com/parks/us/california/mount-diablo-state-park
Wildflower Viewing Easy
RV parking available
Mount Diablo hosts wildflowers year-round with peak blooms during spring (March-May), particularly in late March and early April. Vibrant displays occur in Mitchell Canyon and surrounding areas with secondary blooms visible June-July at higher elevations. Many viewing areas are accessible via short walks from parking areas. mdia.org/wildflower-guide
Scenic Viewpoints and Rock Formations Easy
RV parking available
The park features distinctive rock formations including the Wind Caves and multiple scenic overlooks accessible by short walks from parking areas. These locations are ideal for photography and casual exploration without strenuous climbing. Excellent panoramic views from accessible viewpoints. mdia.org/park-information

Top Hosts near CA, United States

Ellie27 trips - Joined Apr 2023

Ellie is a great host, she made my RV camping experience awesome!she delivered and picked up the RV on time. she gave a tutorial on how to use the RV amenities which was very helpful. set up everything to my liking and let me know that if I have any problems with the RV i could face time her. long story short, My husband and I had an amazing first time RV camping experience. Thank you Ellie!

Rhonda J. - Sep 2024

Very professional, clean camper, will be back again!

Christopher C. - Sep 2024

Instant Book

Farmhouse Jayco Flight SLX Travel Trailer

5.0

Sleeps 4 • Travel Trailer

Brentwood, CA

$115 USD /night

Kevin26 trips - Joined May 2021Superhost

Kevin is excellent to rent from friendly and professional. Customer service was great on time and engaging Will rent from again

David C. - Jul 2025

We rented this for our granddaughter that’s in FFA and shows at the fair. They were very pleased with accommodation and Kevin couldn’t have been nicer.

Diane S. - Jun 2025