Visiting Seattle in August
“The kind of pleasant weather you build a trip around.”
Roughly 4 rainy days across the month, on average.
Walk Ballard's brewery row early in August and the character of Seattle's season lands quickly — warmth that softens the edges of the day carrying through the day. Averages sit around 25.6°C (78.1°F) by day and 15.1°C (59.2°F) after dark, with rainfall near 27 mm across roughly 4.3 rainy days — sliding through as brief afternoon showers. Daylight runs about 11.6 hours per day, generous daylight that stretches evening plans, and the season stamps its signature on details like Pike Place fishmongers throwing salmon.
The numbers translate to comfortable outdoor pacing. Time around Ballard's brewery row works well through the middle of the day, and shoulder-hour walks near Discovery Park trails land in that specific window where light is generous and heat is not the story. Restaurants keep their outdoor tables in play through the evening.
Reading across 11 complete years (2015–2025), August in Seattle has trended warmer in recent seasons, with the last few years pushing daytime highs and rainfall patterns modestly away from the older normals. The 2026 signal so far tracks the recent shape rather than the long-run midpoint — meaning what you see above is weighted to how this month has actually been running, not a smoothed 30-year picture that masks the shift.
For travellers planning around 2026, this profile is the honest baseline. Match the packing list to the numbers — not to the month name — and you avoid the classic mismatch of arriving with the wrong shell, the wrong shoes, or the wrong daylight assumptions. The rest of this page breaks down what to wear, what to do, and how the season tends to run for Seattle visitors in 2026.
The Freeze is real — locals will smile at you at Trader Joe's and never invite you anywhere. The correct coffee order is a 'cortado' at Milstead or Elm, not a Starbucks anything. Ballard is where Norwegians settled and where the salmon locks let you watch chinook climb concrete steps every August. Never open an umbrella; it marks you as tourist. Locals wear Gore-Tex hoods and consider anything under a half-inch per hour to be 'not really raining.'
What to pack for Seattle in August
With daytime highs near 25.6°C, packing leans warm-weather but with a nod to cooler evenings and interior AC.
- light layers
- jeans or shorts
- trainers
- a light rain shell
- sunglasses
What to pack for Seattle in August
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Where to stay in Seattle
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Compare hotels on Booking.com→Estimated August trip to Seattle
Peak season prices — book early or shift by 2–3 weeks to save. Rule-based estimates from a couple based in London — actual prices vary.
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Things worth doing
Best-fit activities include coffee crawls, brewery visits, mountain-view drives, and waterfront walks — a mix suited to the month's daylight and weather pattern.
August vs. the rest of the year
How this month compares in Seattle. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Seattle
August is one of the best months to visit Seattle — alongside May, June, July. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for SeattleOther places with a similar climate right now
Seattle in August — FAQ
Q01Is August a good month for Seattle?
Is August a good month for 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 27mm of rainfall across roughly 4 rainy days. July through mid-September is the 'dry season' when Rainier finally shows itself daily and the Bumbershoot festival takes over Seattle Center.
Q02How warm does Seattle get in August?
How warm does Seattle get 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 11 complete years of daily records (2015–2025, Open-Meteo Archive). August heat domes hit 35C and 40% of homes lack AC; locals sleep in basements or drive to Alki Beach where the Sound stays 12C year-round.
Q03Does it rain a lot in Seattle in August?
Does it rain a lot in Seattle in August?
Seattle averages approximately 4 rainy days in August, with a total monthly rainfall of about 27mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What clothes should I bring to Seattle in August?
What clothes should I bring to Seattle in August?
For Seattle in August, pack layered clothing for changing temperatures, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. Waterproof shoes with aggressive tread — moss-covered brick sidewalks in Pioneer Square become skating rinks in November.
Q05Are there many tourists in Seattle in August?
Are there many tourists in 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. The Freeze is real — locals will smile at you at Trader Joe's and never invite you anywhere. The correct coffee order is a 'cortado' at Milstead or Elm, not a Starbucks anything. Ballard is where Norwegians settled and where the salmon locks let you watch chinook climb concrete steps every August. Never open an umbrella; it marks you as tourist. Locals wear Gore-Tex hoods and consider anything under a half-inch per hour to be 'not really raining.'