San Francisco weather in January 2025

Expect 55°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in San Francisco in January. Check more long-term weather averages for San Francisco in January before you book your next holiday to California in 2025/2026.

  • 55°F maximum daytime temperature in January in San Francisco55
    55°F max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in January in San Francisco10
    10 days with some rainfall
  • 45°F minimum night-time temperature in January in San Francisco45
    45°F min night temperature
  • 10 hours of daylight per day in January in San Francisco10
    10 hours of daylight per day
  • No heat & humidity in January in San Francisco0
    No heat & humidity
  • 4.9 inches monthly rainfall in January in San Francisco4.9
    4.9 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in San Francisco2
    2 (Low) UV index
  • 52°F sea temperature in January in San Francisco52
    52°F sea temperature

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The January 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)  |  Imperial (°F)

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More about San Francisco

How warm is it in San Francisco in January?

Daytime temperatures usually reach 55°F in San Francisco in January, falling to 45°F at night.

How sunny is it in San Francisco in January?

There are normally 6 hours of bright sunshine each day in San Francisco in January - that's 60% of daylight hours.

How warm is the sea around San Francisco in January?

The average sea temperature around San Francisco in January is 52°F.

Does it rain in San Francisco in January?

There are usually 10 days with some rain in San Francisco in January and the average monthly rainfall is 4.9 inches.

San Francisco January sunrise & sunset times

Browse the sunrise and sunset times for San Francisco in January 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 January 2025 07:25 17:02
Thursday, 16th January 2025 07:23 17:16
Friday, 31st January 2025 07:14 17:33

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