Big Sur weather in December 2025

Expect 13°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Big Sur in December based on long-term weather averages. There is usually 8 days with some rainfall and 165 mm of average monthly rainfall in December.

  • 13°C maximum daytime temperature in December in Big Sur13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in December in Big Sur8
    8 days with some rainfall
  • 2°C minimum night-time temperature in December in Big Sur2
    2°C min night temperature
  • 10 hours of daylight per day in December in Big Sur10
    10 hours of daylight per day
  • No heat & humidity in December in Big Sur0
    No heat & humidity
  • 165 mm monthly rainfall in December in Big Sur165
    165 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Big Sur2
    2 (Low) UV index
  • 13°C sea temperature in December in Big Sur13
    13°C sea temperature

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The December weather guide for California (Big Sur) 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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How warm is it in Big Sur in December?

Daytime temperatures usually reach 13°C in Big Sur in December, falling to 2°C at night.

How sunny is it in Big Sur in December?

There are normally 5 hours of bright sunshine each day in Big Sur in December - that's 51% of daylight hours.

How warm is the sea around Big Sur in December?

The average sea temperature around Big Sur in December is 13°C.

Does it rain in Big Sur in December?

There are usually 8 days with some rain in Big Sur in December and the average monthly rainfall is 165mm.

Big Sur December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:00 16:52
Tuesday, 16th December 2025 07:12 16:54
Wednesday, 31st December 2025 07:18 17:03

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