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

Curious about the September weather in Sequim? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In Sequim the weather in September is generally perfect, characterized by pleasant temperatures and moderate rainfall. September is a summer month. Throughout the day, temperatures typically settle at around 20°C. But by evening, they drop to around 9°C.

Sequim in September usually receives moderate rainfall, averaging around 31 mm for the month. Based on our climate data of the past 30 years, about 10 days of rain are anticipated.

With around 204 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. June, July, August and September generally stand out with 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 Sequim climate page with graphs.

 

Sequim, monthly averages in September

Min Temperature 9°C  

Max Temperature 20°C  

Chance of Rain 34%  

Precipitation 31 mm  

Rainy days 10 days  

Humidity 60% *  

Sunshine 204 hours *  

Percentage Sunshine 54% *  

* Data from: Victoria, Canada (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 in September and which places have the best weather 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 Sequim in September?

For visitors traveling to Sequim, 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 in September.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

5/10

Outdoor sports

10/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Sequim.

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 climate conditions. Find out where to go with our weather planner.