San Francisco weather in December 2021

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  • 14°C maximum daytime temperature in December in San Francisco14
    14°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in December in San Francisco10
    10 days with some rainfall
  • 7°C minimum night-time temperature in December in San Francisco7
    7°C min night temperature
  • 10 hours of daylight per day in December in San Francisco10
    10 hours of daylight per day
  • No heat & humidity in December in San Francisco0
    No heat & humidity
  • 97 mm monthly rainfall in December in San Francisco97
    97 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in San Francisco2
    2 (Low) UV index
  • 12°C sea temperature in December in San Francisco12
    12°C sea temperature
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The December 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 warm is it in San Francisco in December?

Daytime temperatures usually reach 14°C in San Francisco in December, falling to 7°C at night.

How sunny is it in San Francisco in December?

There are normally 5 hours of bright sunshine each day in San Francisco in December - that's 53% of daylight hours.

How warm is the sea around San Francisco in December?

The average sea temperature around San Francisco in December is 12°C.

Does it rain in San Francisco in December?

There are usually 10 days with some rain in San Francisco in December and the average monthly rainfall is 97mm.

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

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San Francisco sunrise & sunset times for December 2021

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 07:07 16:51
Thursday, 16th December 2021 07:19 16:52
Friday, 31st December 2021 07:25 17:01
  • Save 30% on Covid-19 Fit to Fly test & travel certificate
  • Home Covid-19 PCR test with free express delivery
  • Receive online results within 24-72 hours once test at lab
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Expires at 23:59 on Friday 31st Dec 2021

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