Seattle comes alive in August, making it one of the best times of year to explore the Emerald City. From the excitement of Seafair events and waterfront festivities to outdoor movies, live concerts in local parks, and vibrant weekend farmers markets, there’s no shortage of ways to enjoy the warm summer weather. Whether you’re visiting Seattle for the first time or looking for new local experiences, this guide covers the best things to do in Seattle in August 2026, including family-friendly activities, seasonal festivals, free events, and can’t-miss summer attractions.
One of August’s standout events, the Seattle Design Festival returns for its 16th year with several days of interactive installations, workshops, talks, and citywide mixers. The signature Block Party runs August 15–16 at Lake Union Park and is free to attend, with additional events planned the rest of that week such as Design Mixers (free workshops) and the Closing Party (tickets required) on August 20.
For two nights this August, Seattleites can head to Marymoor Park for an open-air spectacle of 1,200 illuminated drones recreating favorite characters and moments from the Harry Potter™ films. The show is accompanied by a live electric violinist playing music from the soundtrack. All ages are welcome, and food and drink will be available to purchase.
Hunt for treasure at an after-dark flea market in Pioneer Square
Come shop for vintage finds, art, and more from local makers at this summer evening flea market. Occidental Square Flea is having a special After Dark edition on Saturday, August 15 from 4:00 to 9:00 p.m.
Concerts Under the Stars in Seattle take place on the Olympic Rooftop Pavilion at Stoneburner, so you get to enjoy rooftop views along with live music and cocktails. Coming up this month is an ABBA tribute on August 12 and a Bossa Nova concert on August 26! Get your tickets here.
Picture this: cold drink in hand, your favorite people, and front-row seats to the horizon. Whether you’re kicking off the night with a Happy Hour Cruise (first drink’s on the house!) or catching golden hour on a Sunset Cruise against the Seattle skyline and Olympic Mountains, this is the ultimate summer vibe. For locals and visitors alike, an Argosy Cruise is a must for your Seattle summer bucket list!
Neighborhood-specific art walks are happening across Seattle all throughout August. Don’t miss the country’s longest-running art walk happening in Pioneer Square on Thursday, August 6. Find more info about Seattle art walks at the link below.
Every month, Seattle museums and gardens offer free admission on First Thursday. This month it falls on August 6. Be sure to check out our free admission guide at the link below since some locations have limited hours or require advance reservations—and some museums offer free daily admission!
Step inside the investigative process — from evidence boards to VR casework — and explore what drives serial killers. If you’re building an August itinerary around immersive exhibits, Mind of a Serial Killer: The Experience is a new true-crime exhibition in Seattle that recreates investigative processes with case files, evidence boards and a VR segment that lets visitors work a case themselves. The show examines notorious cases from Ted Bundy to the Zodiac Killer and explores what drives serial offenders.
Seattle’s longest-running neighborhood garage sale returns to Cal Anderson Park on August 16. If bargain hunting is on your August to-do list, the long-running Capitol Hill Garage Sale returns Sunday, August 16, from 10:00 a.m. to 3:00 p.m. at Cal Anderson Park in Seattle, featuring more than 150 sellers in the park—plus additional neighborhood yard sales that you can find via an online map of participating locations.
Candlelight Concerts are a classic Seattle activity. You can enjoy talented musicians playing renditions of your favorite music—from The Beatles to Drake—in the glow of candlelight at stunning local venues like the Arctic Club Hotel and the National Nordic Museum. Follow the link below to see the Candlelight Concerts coming to Seattle in August.
Meet adoptable cats and take a new feline friend home the same day. If you’re looking for a feel-good (and potentially life-changing) addition to your August plans, Seattle City Hall hosts Kitty Hall on Wednesday, August 12, giving residents a chance to meet and adopt cats and kittens from 11:30 a.m. to 1:30 p.m. in the Bertha Knight Landes Room at 600 Fourth Ave. The free event includes interaction stations, a Kitty Cam photo booth, and same-day adoptions after completing paperwork.
Experience Pike Place Market after dark at The Night Shift: every fourth Friday through October. If you’re looking for an evening-friendly way to keep your summer momentum going, Pike Place Market recently debuted The Night Shift, a free monthly after-hours night market that started in July, with art, live music, food, and pop-up experiences. The event runs from 3:00 to 9:00 PM, featuring a DJ and headline performances.
This month, you can see hundreds of kites fill Long Beach skies—free and family-friendly! Another kite festival near Seattle this August is the Washington State International Kite Festival (WSIKF). One of the largest kite festivals in the country returns to Long Beach, Washington from August 17–23, with choreographed kite ballets, workshops, kids’ activities, and a new two-day sport kite competition. Admission is free and daily flying typically runs roughly 9:00 to 5:00.
Get inked by top artists, watch tattoo competitions, and enjoy live burlesque all weekend long. If you’re looking to add something bold to your August plans, the Seattle Tattoo Expo returns to Seattle Center Exhibition Hall Friday, Aug. 14 through Sunday, Aug. 16, 2026, featuring acclaimed local and international tattoo artists, competitions, live burlesque, vendors, and a beer and spirits garden. Children under 12 enter free with an adult, and contest entry costs $15.
Catch the peak wildflower bloom at Mount Rainier this summer: Paradise and Sunrise are alive with color. If you’re looking to add an outdoorsy day trip to your summer plans, Mount Rainier National Park’s alpine wildflower season peaks in August, turning meadows around Paradise and Sunrise into vivid displays. Top trails include Alta Vista, Reflection Lakes, Grand Park, Naches Loop, Summerland, Dege Peak and the Skyline Trail.
Play an artist-designed nine-hole mini golf course along Seattle’s waterfront this summer. For an easy August outing, head to Olympic Sculpture Park, where the Seattle Art Museum has opened an artist-designed mini golf course for summer 2026, running through September 7. The nine-hole course, created by Seattle-based artists, is open Wednesday–Sunday with timed-entry tickets required.
Drift two scenic miles of the Wenatchee River for a classic Leavenworth summer float. For an easy August day trip from Seattle, float a scenic two-mile stretch of the Wenatchee River near Leavenworth on a gentle, family-friendly tubing route; life jackets, paddles and dog tubes are available. For the 2026 season the two-mile route is open through September 13, 2026 (the longer four-mile route is closed due to low water).
See original Declaration of Independence and other founding documents — free with a timed-entry ticket at MOHAI. If you’re looking for a limited-time museum stop in Seattle this August, MOHAI will host the Freedom Plane National Tour: Documents That Forged a Nation from July 30 to August 16, 2026. The exhibit features original founding-era documents, including an engraved Declaration of Independence and early Constitution drafts. Admission is free, but you’ll need to reserve a timed-entry ticket in advance.
Enjoy free outdoor movies across 12 Seattle parks this summer — all screenings start at 7:30 p.m. For an easy August night out in Seattle, Seattle Parks and Recreation is bringing back Center City Cinema, a free outdoor movie series with 26 nights at 12 parks across the city; screenings begin at 7:30 p.m., with blankets, chairs and food trucks often available. See this month’s lineup below!
If you’re looking for another outdoor movie night to add to your August calendar, check out Movies at the Mural. (These are free too!) Head to Seattle Center on Friday evenings to watch Hamilton, Coco, and Masters of the Universe under the Space Needle. The movies start around 9:00 p.m.
Just a short drive or ferry from Seattle, Whidbey Island feels worlds away. For an easy Pacific Northwest escape, make a weekend of historic Coupeville (the filming location of Practical Magic!) and walkable Langley, with options for whale watching, waterfront dining, galleries, hiking, and seasonal summer markets and festivals.
Step into a medieval fantasy world of knights, pirates, fae, and live jousting just an hour from Seattle. If you’re looking for an easy day (or weekend) trip outside the city in August, the Washington Midsummer Renaissance Faire returns for five themed weekends in July and August 2026, transforming Sky Meadows in Snohomish into the Village of Merriwick with jousting, live music, artisan markets, family activities, ale houses, and onsite camping. The faire runs rain or shine from 10:00 a.m. to 7:00 p.m. on Saturdays and Sundays, with special Friday and Saturday evening events.
Grab a drink and stroll Pike Place Market this summer, thanks to this new pilot program. If you’re looking for an easy summer activity in Seattle, Pike Place Market has approved a pilot “Sip & Stroll” program running from Memorial Day weekend through Labor Day weekend that lets visitors enjoy beer, wine and cocktails in designated outdoor seating areas and walkways. Hours are limited to Fridays–Sundays from noon to 4:30 p.m.
Free live music across downtown Seattle all summer long. If you’re looking for free things to do in Seattle this month, keep Downtown Summer Sounds on your radar: it returns for summer 2026 with free live music across downtown Seattle. The Main Stage series continues every Thursday through August. See the locations and lineup at the link below.
Seattle has no shortage of outdoor street markets and farmers markets every weekend. Some favorites are the Fremont Sunday Market, the Ballard Farmers Market, and the newly imagined South Lake Union Farmers Market. See the full list of weekend markets below!
