Santa Cruz weather in December 2025

Expect 15°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Santa Cruz in December based on long-term weather averages. There is usually 9 days with some rainfall and 125 mm of average monthly rainfall in December.

• 15
  15°C max day temperature
• 5
  5 hours of sunshine per day
• 9
  9 days with some rainfall
• 4
  4°C min night temperature
• 10
  10 hours of daylight per day
• 0
  No heat & humidity
• 125
  125 mm of monthly rainfall
• 2
  2 (Low) UV index
• 13
  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

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.

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