Seattle weather in August (Washington State, United States of America)

What is the weather forecast for Seattle in August? Use this page to get an overview of the month’s weather conditions.

Temperatures

Experience perfect weather in Seattle in August, characterized by high temperatures and low rainfall. August ushers in the summer season. Expect daytime highs to reach approximately 25°C, with nighttime lows dipping to around 14°C. Experience the hottest month of the year with ease by packing light and breathable clothing. Staying cool and hydrated will ensure a pleasant experience.

Precipitation

Seattle in August usually receives low rainfall, averaging around 23 mm for the month. Climate statistics over the past 30 years suggest around 4 days of rain.

Average sunshine

Expect a lot of sunshine this month, with about 280 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

If you're inclined towards comfortable temperatures and drier conditions, August is a prime time to visit Seattle. June, July, August and September 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 Seattle climate page with graphs.

 

Seattle, monthly averages in August

Min Temperature 14°C  

Max Temperature 25°C  

Chance of Rain 14%  

Precipitation 23 mm  

Rainy days 4 days  

Humidity 68%  

Windspeed 14 km/h  

Sunshine 280 hours  

Percentage Sunshine 64%  

Where to go in the United States of America in August

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?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Interested in more climate information?

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

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.