Friday Harbor weather in September 2024

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Friday Harbor in September. Check more long-term weather averages for Friday Harbor in September before you book your next holiday to Washington State in 2024/2025.

18
18°C max day temperature
7
7 hours of sunshine per day
9
9 days with some rainfall
10
10°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
36
36 mm of monthly rainfall
5
5 (Moderate) UV index
12
12°C sea temperature

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The September 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 September?

Daytime temperatures usually reach 18°C in Friday Harbor in September, falling to 10°C at night.

How sunny is it in Friday Harbor in September?

There are normally 7 hours of bright sunshine each day in Friday Harbor in September - that's 53% of daylight hours.

How warm is the sea around Friday Harbor in September?

The average sea temperature around Friday Harbor in September is 12°C.

Does it rain in Friday Harbor in September?

There are usually 9 days with some rain in Friday Harbor in September and the average monthly rainfall is 36mm.

Friday Harbor September sunrise & sunset times

Browse the sunrise and sunset times for Friday Harbor in September 2024. Select a month to view Friday Harbor sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st September 2024	06:30	19:52
Sunday, 15th September 2024	06:50	19:23
Monday, 30th September 2024	07:11	18:52

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Washington - quick facts
Flight time^✝	10 hours
Time difference	UK -8 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	State of Washington Tourism