Juneau weather in December 2025

Expect daytime maximum temperatures of 30°F in Juneau, Alaska in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 19 days with some rainfall and typically 6.1 inches of rainfall in the month, which might fall as snow.

  • 30°F maximum daytime temperature in December in Juneau30
    30°F max day temperature
  • 1 hour of sunshine per day
  • 19 days with some rainfall in December in Juneau19
    19 days with some rainfall
  • 19°F minimum night-time temperature in December in Juneau19
    19°F min night temperature
  • 7 hours of daylight per day in December in Juneau7
    7 hours of daylight per day
  • No heat & humidity in December in Juneau0
    No heat & humidity
  • 6.1 inches monthly rainfall in December in Juneau6.1
    6.1 inches of monthly rainfall
  • No UV (maximum) index in December in Juneau0
    No UV (Maximum) Index UV index
  • 41°F sea temperature in December in Juneau41
    41°F sea temperature

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The December weather guide for Alaska (Juneau) 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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How cold is it in Juneau in December?

Daytime temperatures usually reach 30°F in Juneau in December, falling to 19°F at night.

How sunny is it in Juneau in December?

There are normally 1 hour of bright sunshine each day in Juneau in December - that's 20% of daylight hours.

How warm is the sea around Juneau in December?

The average sea temperature around Juneau in December is 41°F.

Does it rain in Juneau in December?

There are usually 19 days with some rain in Juneau in December and the average monthly rainfall is 6.1 inches. Rain may fall as snow in this month.

Juneau December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 08:21 15:13
Tuesday, 16th December 2025 08:41 15:06
Wednesday, 31st December 2025 08:46 15:17

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