San Francisco weather in October 2026

Q: How hot is it in San Francisco in October?

Daytime temperatures usually reach 26°C in San Francisco in October with low heat and humidity, falling to 15°C at night.

Q: How sunny is it in San Francisco in October?

There are normally 8 hours of bright sunshine each day in San Francisco in October - that's 73% of daylight hours.

Q: Does it ever rain in San Francisco in October?

There are usually 2 days with some rain in San Francisco in October and the average monthly rainfall is 9mm.

Expect daytime maximum temperatures of 21°C in San Francisco, California in October based on long-term weather averages. There are 8 hours of sunshine per day on average.

21
21°C max day temperature
8
8 hours of sunshine per day
4
4 days with some rainfall
12
12°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
35
35 mm of monthly rainfall
5
5 (Moderate) UV index
14
14°C sea temperature

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The October 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 October?

Daytime temperatures usually reach 26°C in San Francisco in October with low heat and humidity, falling to 15°C at night.

How sunny is it in San Francisco in October?

There are normally 8 hours of bright sunshine each day in San Francisco in October - that's 73% of daylight hours.

Does it ever rain in San Francisco in October?

There are usually 2 days with some rain in San Francisco in October and the average monthly rainfall is 9mm.

San Francisco October sunrise & sunset times

Browse the sunrise and sunset times for San Francisco in October 2026. Select a month to view San Francisco sunrise and sunset times for the next 12 months.

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