Seattle weather Sunday is shaping up beautifully: sunny skies, a high near 80°F, and light north winds of 5 to 8 mph. This is one of those rare early-May days when the Pacific Northwest actually delivers on its sunshine promise—so get outside and make the most of it.
The National Weather Service notes that an upper-level ridge is building over British Columbia and will shift into western Washington, creating stable conditions and allowing for large-scale subsidence across the region. Overnight lows will dip to around 55°F, so you’ll want a light jacket for early morning or evening strolls through Green Lake or along the Waterfront.
If you’re heading to T-Mobile Park today for the Seattle Mariners vs. Kansas City Royals game, you’re in for ideal tailgating weather. Grab a Seattle Mariners jersey and Seattle Mariners fitted cap to show your colors, and plan to arrive early—the sun will be strong, so sunscreen is your friend. Get tickets on SeatGeek or Find tickets on StubHub if you haven’t secured yours yet. No rain in the forecast means you can leave the umbrella at home.
This is also a perfect day for outdoor activities across the metro. Whether you’re golfing at one of the courses near Shoreline, fishing on the Puget Sound, or simply enjoying a picnic at Discovery Park, conditions are ideal. If you’re dealing with spring allergies—which peak this time of year in the Seattle area—consider keeping an allergy relief nasal spray and a pollen count face mask handy, especially if you’re spending hours outdoors.
Indoor events are happening too: catch the Waxahatchee & MJ Lenderman concert with special guest Brennan Wedl at the Paramount Theatre tonight, or head to the Moore Theatre for Bishop Blanchet High School Drama’s production of The Music Man. For those interested in science and the stars, Neil deGrasse Tyson takes the stage at the Paramount Theatre on Tuesday—grab a Neil deGrasse Tyson t-shirt and find tickets on SeatGeek or Find tickets on StubHub.
For dinner, take advantage of the pleasant evening by firing up your propane gas grill for some grilled vegetables and protein. A simple pasta or stir-fry pairs well with this kind of weather—light, fresh, and quick to prepare so you can enjoy more time outside. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Looking ahead: Monday stays sunny with a high near 81°F, but marine stratus moves in Tuesday as onshore flow increases. Expect daytime highs to drop to the upper 60s to mid 70s by midweek, with the coast settling into the mid 60s. Enjoy this warmth while it lasts—it’s the kind of Seattle Sunday that reminds us why we live here.

