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Juneau weather in August 2025
Expect 15°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Juneau in August. Check more long-term weather averages for Juneau in August before you book your next holiday to Alaska in 2025/2026.
- 15°C max day temperature
15 - 5 hours of sunshine per day
- 17 days with some rainfall
17 - 6°C min night temperature
6 - 15 hours of daylight per day
15 - No heat & humidity
0 - 157 mm of monthly rainfall
157 - 4 (Moderate) UV index
4 - 13°C sea temperature
13
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Recommended for Alaska
The August 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 / mm) | Imperial (°F / inches)
More about the USA
How warm is it in Juneau in August?
Daytime temperatures usually reach 15°C in Juneau in August, falling to 6°C at night.
How sunny is it in Juneau in August?
There are normally 5 hours of bright sunshine each day in Juneau in August - that's 35% of daylight hours.
How warm is the sea around Juneau in August?
The average sea temperature around Juneau in August is 13°C.
Does it rain in Juneau in August?
There are usually 17 days with some rain in Juneau in August and the average monthly rainfall is 157mm.
Juneau August sunrise & sunset times
Browse the sunrise and sunset times for Juneau in August 2025. Select a month to view Juneau sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 03:50 | 20:16 |
| Saturday, 16th August 2025 | 04:23 | 19:39 |
| Sunday, 31st August 2025 | 04:56 | 18:58 |
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