Bellingham weather in December 2025

Expect daytime maximum temperatures of 43°F in Bellingham, Washington State in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 5.9 inches of rainfall in the month.

  • 43°F maximum daytime temperature in December in Bellingham43
    43°F max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in December in Bellingham20
    20 days with some rainfall
  • 32°F minimum night-time temperature in December in Bellingham32
    32°F min night temperature
  • 8 hours of daylight per day in December in Bellingham8
    8 hours of daylight per day
  • No heat & humidity in December in Bellingham0
    No heat & humidity
  • 5.9 inches monthly rainfall in December in Bellingham5.9
    5.9 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Bellingham1
    1 (Low) UV index
  • 46°F sea temperature in December in Bellingham46
    46°F sea temperature

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The December weather guide for Washington State (Bellingham) 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)

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More about the USA

How cold is it in Bellingham in December?

Daytime temperatures usually reach 43°F in Bellingham in December, falling to 32°F at night.

How sunny is it in Bellingham in December?

There are normally 2 hours of bright sunshine each day in Bellingham in December - that's 22% of daylight hours.

How warm is the sea around Bellingham in December?

The average sea temperature around Bellingham in December is 46°F.

Does it rain in Bellingham in December?

There are usually 20 days with some rain in Bellingham in December and the average monthly rainfall is 5.9 inches.

Bellingham December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:42 16:16
Tuesday, 16th December 2025 07:57 16:14
Wednesday, 31st December 2025 08:03 16:24

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