Seattle weather in December 2024

Expect 8°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Seattle in December. Check more long-term weather averages for Seattle in December before you book your next holiday to Washington State in 2024/2025.

  • 8°C maximum daytime temperature in December in Seattle8
    8°C max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in December in Seattle18
    18 days with some rainfall
  • 2°C minimum night-time temperature in December in Seattle2
    2°C min night temperature
  • 8 hours of daylight per day in December in Seattle8
    8 hours of daylight per day
  • No heat & humidity in December in Seattle0
    No heat & humidity
  • 151 mm monthly rainfall in December in Seattle151
    151 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Seattle1
    1 (Low) UV index

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The December weather guide for Washington State (Seattle) 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 Seattle in December?

Daytime temperatures usually reach 8°C in Seattle in December, falling to 2°C at night.

How sunny is it in Seattle in December?

There are normally 2 hours of bright sunshine each day in Seattle in December - that's 21% of daylight hours.

Does it rain in Seattle in December?

There are usually 18 days with some rain in Seattle in December and the average monthly rainfall is 151mm.

Seattle December sunrise & sunset times

Browse the sunrise and sunset times for Seattle in December 2024. Select a month to view Seattle sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 07:37 16:20
Monday, 16th December 2024 07:52 16:19
Tuesday, 31st December 2024 07:58 16:28

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