Newport Beach weather in December 2025

Expect daytime maximum temperatures of 18°C in Newport Beach, California in December based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 43 mm of rainfall in the month.

  • 18°C maximum daytime temperature in December in Newport Beach18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 5 days with some rainfall in December in Newport Beach5
    5 days with some rainfall
  • 8°C minimum night-time temperature in December in Newport Beach8
    8°C min night temperature
  • 10 hours of daylight per day in December in Newport Beach10
    10 hours of daylight per day
  • No heat & humidity in December in Newport Beach0
    No heat & humidity
  • 43 mm monthly rainfall in December in Newport Beach43
    43 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in December in Newport Beach3
    3 (Moderate) UV index
  • 15°C sea temperature in December in Newport Beach15
    15°C sea temperature

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The December weather guide for California (Newport Beach) 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 hot is it in Newport Beach in December?

Daytime temperatures usually reach 18°C in Newport Beach in December, falling to 8°C at night.

How sunny is it in Newport Beach in December?

There are normally 7 hours of bright sunshine each day in Newport Beach in December - that's 72% of daylight hours.

How warm is the sea around Newport Beach in December?

The average sea temperature around Newport Beach in December is 15°C.

Does it rain in Newport Beach in December?

There are usually 5 days with some rain in Newport Beach in December and the average monthly rainfall is 43mm.

Newport Beach December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:38 16:43
Tuesday, 16th December 2025 06:50 16:46
Wednesday, 31st December 2025 06:56 16:54

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