Juneau weather in September 2021

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  • 12°C maximum daytime temperature in September in Juneau12
    12°C max day temperature
  • 4 hours of sunshine per day
  • 19 days with some rainfall in September in Juneau19
    19 days with some rainfall
  • 4°C minimum night-time temperature in September in Juneau4
    4°C min night temperature
  • 13 hours of daylight per day in September in Juneau13
    13 hours of daylight per day
  • No heat & humidity in September in Juneau0
    No heat & humidity
  • 210 mm monthly rainfall in September in Juneau210
    210 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Juneau3
    3 (Moderate) UV index
  • 10°C sea temperature in September in Juneau10
    10°C sea temperature

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The September weather guide for Juneau, Alaska 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.

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How warm is it in Juneau in September?

Daytime temperatures usually reach 12°C in Juneau in September, falling to 4°C at night.

How sunny is it in Juneau in September?

There are normally 4 hours of bright sunshine each day in Juneau in September - that's 28% of daylight hours.

Is the sea cold around Juneau in September?

The average sea temperature around Juneau in September is 10°C.

Does it rain in Juneau in September?

There are usually 19 days with some rain in Juneau in September and the average monthly rainfall is 210mm.

Juneau sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Juneau in September 2021. Select a month to view Juneau sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 05:58 19:56
Wednesday, 15th September 2021 06:28 19:16
Thursday, 30th September 2021 07:01 18:33
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is warm in Alaska in September for 2021/2022?

Below are average maximum temperatures at popular destinations in Alaska in September. Select a destination to see more weather parameters.

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