Seattle in September
Great time to visit
September offers Seattle's sweet spot - still mostly sunny and warm but without peak summer crowds and prices. Locals consider it the city's best-kept secret season.
Weather
September brings warm, stable weather with fewer crowds as kids return to school. Sunny days outnumber rainy ones, but you'll see the first hints of fall with occasional storms rolling in from the Pacific.
21°C high11°C low8 rain days
Crowds & Cost
moderate crowds
~$200/day average
Events & Festivals
- •Bumbershoot music festival at Seattle Center
- •Seattle Design Festival
- •Salmon runs begin in local streams
September Tips
- •Perfect time for San Juan Islands ferry trips with smaller crowds
- •Restaurant patios still busy but reservations easier to get
- •Pack a light rain jacket as weather becomes less predictable
All Months
June through September delivers Seattle at its absolute best. Temperatures hover in the 70s, rain takes a vacation, and the city comes alive with outdoor festivals and markets. July and August see the least rain but also the highest hotel prices and biggest crowds at popular spots like Pike Place Market. September might be the sweet spot — still warm, fewer tourists, and the leaves start changing in nearby mountains. Spring arrives late but brings blooming cherry trees around the University of Washington quad in March and April. Winter gets dark and wet, but it's also when you'll find the best hotel deals and shorter lines at restaurants. The holiday season brings charm with Christmas markets and lights, just pack waterproof everything. Avoid visiting during tech conference season in late spring unless you enjoy inflated hotel rates and crowded coffee shops full of startup bros.
Seattle Scores
Solo
8/10
Couples
7/10
Families
8/10
Adventure
6/10
Budget
5/10
Luxury
7/10
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