Pool season · Washington
Bremerton Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Bremerton's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Each dot on the bar is one week of Bremerton's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (May 29–June 19), solid teal is swim season, and hollow amber is the closing window ending September 28. The black marker is today — its position against the colors is the entire executive summary.
The Bremerton pool calendar
Opening — target June 5
Target June 5; the practical window runs May 29–June 19, and the 7-day mean crosses the 61°F threshold around June 19. Cold-water starts are the cheap ones.
Closing — deadline September 28
Hold the cover until September 18, then winterize by September 28, a week ahead of the November 14 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Bremerton's own normals — the shape of a typical year, not a forecast. The widget above shows where the current year actually sits.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40° | 42° | 44° | 48° | 53° | 59° | 63° | 67° | 64° | 57° | 48° | 42° |
The curve peaks near 67°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Bremerton hits the closing window
Data: NOAA 1991–2020 climate normals via Bremerton (2.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.