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San Francisco weather in September 2024
Expect 22°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in San Francisco in September. Check more long-term weather averages for San Francisco in September before you book your next holiday to California in 2024/2025.
- 2222°C max day temperature
- 22 days with some rainfall
- 1313°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 77 mm of monthly rainfall
- 77 (High) UV index
- 1414°C sea temperature
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The September weather guide for California (San Francisco) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about San Francisco
How hot is it in San Francisco in September?
Daytime temperatures usually reach 22°C in San Francisco in September, falling to 13°C at night.
How sunny is it in San Francisco in September?
There are normally 9 hours of bright sunshine each day in San Francisco in September - that's 73% of daylight hours.
How warm is the sea around San Francisco in September?
The average sea temperature around San Francisco in September is 14°C.
Does it ever rain in San Francisco in September?
There are usually 2 days with some rain in San Francisco in September and the average monthly rainfall is 7mm.
San Francisco September sunrise & sunset times
Browse the sunrise and sunset times for San Francisco in September 2024. Select a month to view San Francisco sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Sunday, 1st September 2024||06:40||19:38|
|Sunday, 15th September 2024||06:52||19:16|
|Monday, 30th September 2024||07:05||18:53|
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