Best Stargazing Near San Francisco, California

Best options by distance and Bortle class

Dark Sky Locations Near San Francisco

Drive east over the Coast Range into the Central Valley edge, or south toward Pinnacles. The fog that plagued the Bay is often absent 30 miles inland. Check StarCast for transparency specifically — Bay Area clear nights can still have poor transparency from moisture. Each location links to a live StarCast forecast — click any to check current moon phase, cloud cover, and transparency before you drive.

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Pinnacles National Park · Bortle 3 · 2 hrs south

Designated Dark Sky Park in the Gabilan Range. Spire formations make excellent foreground. A reliable clear-night option when Bay Area fog is limiting coastal locations. Check tonight's sky →

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Henry Coe State Park · Bortle 3–4 · 1.5 hrs SE

The largest state park in Northern California. Ridge terrain above the fog layer with decent dark sky and mountain views. A closer option when you can't make the Pinnacles drive. Check tonight's sky →

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Point Reyes National Seashore · Bortle 3–4 · 1.5 hrs NW

The peninsula extends into the Pacific — ocean horizon to the west and south with no land light. Fog is the primary variable. On clear nights the coastal dark sky is accessible. Check tonight's sky →

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Mount Diablo State Park · Bortle 4 · 1 hr east

The summit gives 360-degree views above the Bay Area light dome. Not the darkest sky but the most accessible elevated dark sky from SF — and the light dome itself is visually dramatic. Check tonight's sky →

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Lassen Volcanic National Park · Bortle 3 · 3.5 hrs north

The best dark sky within a half-day of SF. Volcanic landscape, mountain lakes, and geothermal features as foreground under Bortle 3 sky. Check tonight's sky →

Before you go

Check Conditions, Not Just Location

Location is only half the decision. Moon phase, atmospheric transparency, and cloud cover on the specific night determine whether the drive is worth it. A Bortle 2 location on a full moon night is worse than a Bortle 4 location on a new moon with excellent transparency. Check StarCast for your target location before leaving — not just the general weather forecast.

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StarCast Push Alerts

Save your nearest dark sky location and set a score threshold once. StarCast monitors moon phase, cloud cover, and transparency nightly — sending a push alert when a high-scoring night is forecast. Exclusive to the iOS app.

Common Questions

Where is the best stargazing near San Francisco?

The locations above are ranked by Bortle class and distance. Click any location to check tonight's StarCast score — moon phase, transparency, and cloud cover scored together. Free on web, push alerts in the iOS app.

What Bortle class do I need for Milky Way photography near San Francisco?

Bortle 3 or better for serious results. Bortle 1–2 for the most dramatic experience. StarCast shows Bortle class for any location you search — use it to confirm before making the drive.

When is the best time to go stargazing near San Francisco?

May through October for Milky Way core season, within 5 days of new moon. Check StarCast for the specific night — moon phase and transparency on that night matter more than the general season.

How do I know if tonight is good for stargazing?

Check StarCast for your target location — it scores cloud cover, moon phase, Bortle class, and atmospheric transparency together into a single 0–100 score. Above 70 is an excellent night. Free on web, push alerts in the iOS app.

What is LightCast StarCast?

StarCast scores night sky conditions using moon phase, Bortle class, atmospheric transparency, and cloud cover for any location. Push alerts notify you when a high-scoring night is forecast. Free on web at lightcastsuite.com/starcast, push notifications in the LightCast iOS app. $2.99/month after a 7-day free trial.