Juneau weather in September 2019

• 12
  12°C max day temperature
• 4
  4 hours of sunshine per day
• 19
  19 days with some rainfall
• 4
  4°C min night temperature
• 13
  13 hours of daylight per day
• 0
  No heat & humidity
• 210
  210 mm of monthly rainfall
• 3
  3 (Moderate) UV index
• 10
  10°C sea temperature

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Expect 12°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Juneau in September. Check more long-term weather averages for Juneau in September before you book your next holiday to Alaska in 2019/2020.

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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.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Juneau weather in September

The average maximum daytime temperature in Juneau in September is a cool 12°C (54°F). The average night-time temperature is usually a cold 4°C (39°F). There are usually 4 hours of bright sunshine each day, which represents 28% of the 13 hours of daylight.

Expect 210mm (8.3 inches) of rainfall across the whole of September with 19 days with some rain falling. Maximum UV levels will be moderate (3 UV index) at midday when the skies are clear.

The average sea temperature in and around Juneau in September is 10°C (50°F).

Juneau sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Juneau in September 2019. Select a month to view Juneau sunrise & sunset times for the next twelve months.

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