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

Curious about the climate in Coupeville this September? Thinking about a visit? Explore this page for a full overview of the weather conditions this month.

Temperatures

You’ll find the weather in Coupeville during September to be perfect, with pleasant temperatures and moderate rainfall. September is part of the summer season. Daytime temperatures are expected to be around 20°C, cooling off to about 10°C at night.

Precipitation

Coupeville in September usually receives moderate rainfall, averaging around 34 mm for the month. Typically around 9 days days of rainfall are expected.

Average sunshine

Expect a lot of sunshine this month, with about 202 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

So this is a great month to visit if you prefer dry days with pleasant temperatures. July, August and September typically offer the most optimal weather. In contrast, January, February, November and December tend to have less optimal conditions.

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

 

Coupeville, monthly averages in September

Min Temperature 10°C  

Max Temperature 20°C  

Chance of Rain 31%  

Precipitation 34 mm  

Rainy days 9 days  

Sunshine 202 hours *  

Percentage Sunshine 55% *  

Data from: Friday Harbor, the United States of America (42 KM, 26 Miles).

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 Coupeville, 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.

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 Coupeville.

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.