San Francisco weather in October 2021

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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 San Francisco, California 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.

How hot is it in San Francisco in October?

Daytime temperatures usually reach 21°C in San Francisco in October, falling to 12°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 72% of daylight hours.

How warm is the sea around San Francisco in October?

The average sea temperature around San Francisco in October is 14°C.

Does it rain in San Francisco in October?

There are usually 4 days with some rain in San Francisco in October and the average monthly rainfall is 35mm.

Metric (°C / mm) | Imperial (°F / inches)

San Francisco sunrise & sunset times for October 2021

Browse the sunrise and sunset times for San Francisco in October 2021. Select a month to view San Francisco sunrise & sunset times for the next 12 months.

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