Seattle weather
in August
“The kind of pleasant weather you build a trip around.”
Roughly 5 rainy days across the month, on average.
In august, Seattle settles into its kind, mild rhythm. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 26°C (78°F), cooling to 15°C after sunset. Rain is rare enough that you can plan without a contingency. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Seattle in August
- •A light layer for cool mornings and evenings
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Seattle in August
- →Breathable travel pantsAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
- →Anti-theft crossbody bagAmazon · shop this
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Where to stay in Seattle
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Seattle across trusted platforms.
Compare hotels on Booking.com→Other places with a similar climate right now
Seattle in August — FAQ
Q01Is August a good time to visit Seattle?
Is August a good time to visit Seattle?
Yes — this is one of the best months of the year to visit. In August, Seattle averages a high of 26°C (78°F) and a low of 15°C (59°F), with 28mm of rainfall across roughly 5 rainy days.
Q02What is the average temperature in Seattle in August?
What is the average temperature in Seattle in August?
The average high temperature in Seattle during August is 26°C (78°F), with an average low of 15°C (59°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Seattle have in August?
How many rainy days does Seattle have in August?
Seattle averages approximately 5 rainy days in August, with a total monthly rainfall of about 28mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Seattle in August?
What should I pack for Seattle in August?
For Seattle in August, pack layered clothing for changing temperatures, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Seattle in August?
How crowded is Seattle in August?
Tourist crowds in Seattle during August are typically high — this is peak season, expect crowds and higher prices. Consider this when planning accommodation — prices track crowd levels closely.