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Best time to tan in San Francisco today

37.77°N, 122.42°W · Typical reference until a usable live update loads
9
Very High
typical
Typical

On a clear day San Francisco peaks near 1pm at about 9 — the very high band — then eases toward sunset. The dial currently shows that typical reference; a usable live response replaces it. Morning and late-afternoon reference windows are usually lower than the peak.

☀ Tan window 9:00–10:30 ☀ Tan window 16:30–18:30 Peak 1pm
typical clear-sky
Typical day · sunrise → sunset
5:48Solar noon20:30
Hourly UV · typical

Best time to tan in San Francisco

Typical clear-sky reference windows in San Francisco fall in the morning around 9:00–10:30 and again in the late afternoon around 16:30–18:30, when the index sits well below its peak. Around midday the UV climbs to roughly 9 (very high), so treat the middle of the day as shade-first and keep tanning sessions short. Load a usable current forecast before acting on these reference times. Fog can drop UV fast, but clear afternoons reach very high — always read the index, not the temperature.

Morning 9:00–10:30 Evening 16:30–18:30

See also: UV index in San Francisco today.

Plan from this UV reading

Check UV for my current location Check current and hourly UV near you before comparing it with San Francisco. Tanning calculator Use San Francisco's UV with skin type, SPF, and an early stop cue. UV Index app Carry current UV, hourly peaks, freshness, and SPF reminders into the app. Best tanning timer app Turn side changes, SPF timing, and stop cues into a UV-aware timer.

Typical 3-day UV reference

Illustrative clear-sky pattern — not a live forecast. A usable response can replace it with the provider's 3-day forecast.

Tanning in nearby cities

10
Los Angeles peak 1pm
11
Miami peak 1pm
11
Phoenix peak 12:30pm
10
San Diego peak 12:45pm
12
Honolulu peak 12:30pm
11
Las Vegas peak 1pm
10
Austin peak 1:30pm
11
Orlando peak 1pm

Source & freshness

This page starts with labelled typical clear-sky values for San Francisco. The card attempts a current UV and forecast request through TanPilot's proxy and replaces reference values only after a usable response; failed requests leave the reference label visible. Estimates only — not medical advice.

Questions

Is it safe to tan in San Francisco at midday?

Around midday San Francisco typically reaches UV 9 (very high), strong enough to burn unprotected skin quickly. It is better used as shade-first time. For a gentler session, aim for the lower-UV windows around 9:00–10:30 or 16:30–18:30, and use broad-spectrum SPF. These are estimates, not medical advice.

When is UV lowest in San Francisco?

UV is lowest near sunrise (5:48) and sunset (20:30) and climbs to its peak around 1pm. The morning and late-afternoon tan windows — about 9:00–10:30 and 16:30–18:30 — are the lower-UV parts of daylight that are still warm enough to be useful for a careful tan.