San Francisco weather in December 2025

Expect daytime maximum temperatures of 57°F in San Francisco, California in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 3.8 inches of rainfall in the month.

  • 57°F maximum daytime temperature in December in San Francisco57
    57°F max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in December in San Francisco10
    10 days with some rainfall
  • 45°F minimum night-time temperature in December in San Francisco45
    45°F 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
  • 3.8 inches monthly rainfall in December in San Francisco3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in San Francisco2
    2 (Low) UV index
  • 54°F sea temperature in December in San Francisco54
    54°F sea temperature

More about San Francisco

San Francisco by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for California

TUI: up to 8% off holidays booked online

  • Book online with TUI & save up to 8% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

The December 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)

Back to top

More about San Francisco

How warm is it in San Francisco in December?

Daytime temperatures usually reach 57°F in San Francisco in December, falling to 45°F 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 54°F.

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 3.8 inches.

San Francisco December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:07 16:51
Tuesday, 16th December 2025 07:19 16:52
Wednesday, 31st December 2025 07:25 17:01

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^