San Francisco weather in October 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in San Francisco in October. Check more long-term weather averages for San Francisco in October before you book your next holiday to California in 2025/2026.

  • 21°C maximum daytime temperature in October in San Francisco21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in October in San Francisco4
    4 days with some rainfall
  • 12°C minimum night-time temperature in October in San Francisco12
    12°C min night temperature
  • 11 hours of daylight per day in October in San Francisco11
    11 hours of daylight per day
  • No heat & humidity in October in San Francisco0
    No heat & humidity
  • 35 mm monthly rainfall in October in San Francisco35
    35 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in San Francisco5
    5 (Moderate) UV index
  • 14°C sea temperature in October in San Francisco14
    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)

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More about San Francisco

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.

San Francisco October sunrise & sunset times

Browse the sunrise and sunset times for San Francisco in October 2025. Select a month to view San Francisco sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:06 17:52
Thursday, 16th October 2025 06:19 17:30
Friday, 31st October 2025 06:34 17:12

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