Santa Cruz weather in December 2025

Expect daytime maximum temperatures of 15°C in Santa Cruz, California in December based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 125 mm of rainfall in the month.

  • 15°C maximum daytime temperature in December in Santa Cruz15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in December in Santa Cruz9
    9 days with some rainfall
  • 4°C minimum night-time temperature in December in Santa Cruz4
    4°C min night temperature
  • 10 hours of daylight per day in December in Santa Cruz10
    10 hours of daylight per day
  • No heat & humidity in December in Santa Cruz0
    No heat & humidity
  • 125 mm monthly rainfall in December in Santa Cruz125
    125 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Santa Cruz2
    2 (Low) UV index
  • 13°C sea temperature in December in Santa Cruz13
    13°C sea temperature

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The December weather guide for California (Santa Cruz) 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 California

How warm is it in Santa Cruz in December?

Daytime temperatures usually reach 15°C in Santa Cruz in December, falling to 4°C at night.

How sunny is it in Santa Cruz in December?

There are normally 5 hours of bright sunshine each day in Santa Cruz in December - that's 52% of daylight hours.

How warm is the sea around Santa Cruz in December?

The average sea temperature around Santa Cruz in December is 13°C.

Does it rain in Santa Cruz in December?

There are usually 9 days with some rain in Santa Cruz in December and the average monthly rainfall is 125mm.

Santa Cruz December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:03 16:51
Tuesday, 16th December 2025 07:15 16:53
Wednesday, 31st December 2025 07:21 17:02

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