Is September a good month to visit San Francisco?

September sits in the autumn period, so trip quality depends on your preferred weather, crowd levels, and pace.

What should I pack for San Francisco in September?

Average highs around 20.4C and lows near 14.3C. Pack flexible layers for changing daytime and evening temperatures.

What weather should I expect in San Francisco during September?

September typically averages around 17.4C, with about 5.4mm of rain across 2 days.

San Francisco, United States

San Francisco in September

San Francisco, United States

Visiting San Francisco in September means experiencing the autumn. During autumn, San Francisco offers crisp air, changing colours, and a cosy atmosphere.

SeasonAutumn

Travel StylePure Fun!

Cost$$$

Weather in San Francisco in September

Average highs around 20.4C and lows near 14.3C. 5.4mm average precipitation and about 2 rainy days. September typically sits between August and October conditions, so it is useful for travelers wanting a balanced window in San Francisco. Pack flexible layers for changing daytime and evening temperatures.

Avg High20.4C

Avg Low14.3C

Rainy Days2

Precipitation5.4mm

Daylight12.4h/day

Sunshine11h/day

Wind25.2 km/h

UVmoderate

Humiditymoderate

Temperature

September brings autumn conditions in San Francisco, United States. The average temperature is about 17.4C, with lows near 14.3C and highs around 20.4C.

Sunshine Hours

San Francisco, United States usually gets around 11 hours of sunshine per day in September, with roughly 12.4 daylight hours available for sightseeing.