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Friday Harbor weather in August 2025
Expect 21°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Friday Harbor in August. Check more long-term weather averages for Friday Harbor in August before you book your next holiday to Washington State in 2025/2026.
- 2121°C max day temperature
- 9 hours of sunshine per day
- 66 days with some rainfall
- 1111°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 2626 mm of monthly rainfall
- 66 (High) UV index
- 1313°C sea temperature
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The August weather guide for Washington State (Friday Harbor) 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 hot is it in Friday Harbor in August?
Daytime temperatures usually reach 21°C in Friday Harbor in August, falling to 11°C at night.
How sunny is it in Friday Harbor in August?
There are normally 9 hours of bright sunshine each day in Friday Harbor in August - that's 64% of daylight hours.
How warm is the sea around Friday Harbor in August?
The average sea temperature around Friday Harbor in August is 13°C.
Does it rain in Friday Harbor in August?
There are usually 6 days with some rain in Friday Harbor in August and the average monthly rainfall is 26mm.
Friday Harbor August sunrise & sunset times
Browse the sunrise and sunset times for Friday Harbor in August 2025. Select a month to view Friday Harbor sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 04:47 | 19:49 |
Saturday, 16th August 2025 | 05:08 | 19:24 |
Sunday, 31st August 2025 | 05:29 | 18:55 |
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