Friday Harbor weather in September (Washington State, United States of America)

Is September a good time to explore Friday Harbor weather-wise? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

The typical weather for September in Friday Harbor includes pleasant temperatures and moderate rainfall. September is known for being in the summer season. Expect temperatures to climb to 18°C during the day, with nighttime readings dropping to 9°C.

Precipitation

Friday Harbor in September usually receives moderate rainfall, averaging around 41 mm for the month. On average, there are about 10 days with rain during this month.

Average sunshine

Enjoy a sunny month with about 202 hours of sunshine, providing a cheerful and lively atmosphere.

If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Friday Harbor climate page with graphs.

 

Friday Harbor, monthly averages in September

Min Temperature 9°C  

Max Temperature 18°C  

Chance of Rain 35%  

Precipitation 41 mm  

Rainy days 10 days  

Sunshine 202 hours  

Percentage Sunshine 55%  

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Friday Harbor, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Camping

5/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Friday Harbor.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.