Juneau weather in August 2019

  • 15°C maximum daytime temperature in August in Juneau15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in August in Juneau17
    17 days with some rainfall
  • 6°C minimum night-time temperature in August in Juneau6
    6°C min night temperature
  • 15 hours of daylight per day in August in Juneau15
    15 hours of daylight per day
  • No heat & humidity in August in Juneau0
    No heat & humidity
  • 157 mm monthly rainfall in August in Juneau157
    157 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Juneau4
    4 (Moderate) UV index
  • 13°C sea temperature in August in Juneau13
    13°C sea temperature
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The August 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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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Juneau weather in August

The average maximum daytime temperature in Juneau in August is a comfortable 15°C (59°F). The average night-time temperature is usually a cold 6°C (43°F). There are usually 5 hours of bright sunshine each day, which represents 35% of the 15 hours of daylight.

Expect 157mm (6.2 inches) of rainfall across the whole of August with 17 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear.

The average sea temperature in and around Juneau in August is 13°C (55°F).

Juneau sunrise & sunset times for August 2019

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


Date Sunrise times Sunset times
Thursday, 1st August 2019 04:49 21:17
Friday, 16th August 2019 05:22 20:41
Saturday, 31st August 2019 05:55 20:00
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Where's hot in Alaska in August?

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

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