San Francisco, United States

San Francisco by month

San Francisco in September

September in San Francisco brings highs around 70°F (21°C), lows near 56°F and about 1 rainy days. The sun sets around 7:18 pm. It's one of the most comfortable months for sightseeing.

Photo: Lightandtruth, CC BY-SA 4.0

What September is good for in San Francisco

Each activity rated for September's weather.

September next to August and October

Month	August	September	October
High	68°F (20°C)	70°F (21°C)	70°F (21°C)
Low	56°F (13°C)	56°F (13°C)	54°F (12°C)
Rainy days	1	1	4
Sunset	8:03 pm	7:18 pm	6:33 pm
Daylight	13 h 38 min	12 h 27 min	11 h 15 min

Averages for San Francisco, 1991–2020; sunrise and sunset on the 15th.

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Questions

Is September a good time to visit San Francisco?

It's one of the most comfortable months for sightseeing. The most comfortable months overall are May, June, July, August, September and October.

How hot is San Francisco in September?

Average highs are about 70°F (21°C) and lows about 56°F (13°C).

Does it rain much in San Francisco in September?

September averages 1 rainy days, against 12 in the wettest month.

Other cities in September

Everything to do in San Francisco