Seattle's big events, and how busy they make the city
Every event here is verified by a person, dated from its own organiser, and set against Seattle's day-by-day crowd forecast — so they can be ranked on one scale. "Major" here means an event we have checked and approved as one of Seattle's biggest, whose days our own forecast reads Busy or Packed — or, for now, sit beyond the forecast window. See the city, day by day →
Calm · Lively · Busy · Packed rank a day against Seattle's own year — not a headcount.
Independence Day and the Lake Union fireworks →
4 July 2027 — we checked these dates against the organiser's own site
The 2027 Independence Day and the Lake Union fireworks in Seattle runs 4 Jul 2027, confirmed; expect Packed days — busier than 99% of Seattle's year. (Avoid-Crowds, as of 2026-09-14; recomputed nightly.)
Labor Day →
6 September 2027 — we checked these dates against the organiser's own site
The 2027 Labor Day in Seattle runs 6 Sep 2027, confirmed; expect Packed days — busier than 99% of Seattle's year. (Avoid-Crowds, as of 2026-09-14; recomputed nightly.)
Memorial Day →
31 May 2027 — we checked these dates against the organiser's own site
The 2027 Memorial Day in Seattle runs 31 May 2027, confirmed; expect Packed days — busier than 99% of Seattle's year. (Avoid-Crowds, as of 2026-09-14; recomputed nightly.)
Planning Seattle around these dates? Timed entries and tours matched to the day's forecast
Who writes the city guides · Disclaimer — event dates can change; expected dates are labelled and can move.