San Francisco in September
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.
Weather in San Francisco in September
Expect typical autumn conditions in September. Rainfall can vary, so check the latest local forecast before your trip. 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.
Temperature
We are loading historical temperature data for San Francisco, United States in September.
Sunshine Hours
San Francisco, United States often has mixed daylight conditions in September, so planning outdoor activities earlier in the day can help.
Rain
September rainfall can vary, so carrying a light rain layer is a smart choice.
Humidity
Humidity can vary during September; breathable clothing usually improves comfort.
Additional Information
Pack flexible layers for changing daytime and evening temperatures.
