Pool season · Oklahoma
Tulsa Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Tulsa pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.
Each dot on the bar is one week of Tulsa's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (March 27–April 17), solid teal is swim season, and hollow amber is the closing window ending October 28. The black marker is today — its position against the colors is the entire executive summary.
The Tulsa pool calendar
Opening — target April 3
Target April 3; the practical window runs March 27–April 17, and the 7-day mean crosses the 61°F threshold around April 17. Cold-water starts are the cheap ones.
Closing — deadline October 28
The window opens October 19 once water leaves the algae zone; the model deadline is October 28, a week ahead of the November 4 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Tulsa'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 39° | 40° | 48° | 57° | 65° | 75° | 82° | 84° | 78° | 68° | 56° | 45° |
Warmest water typically July–September (peaking near 84°F); heaters and covers shift any month up.
Email me when Tulsa hits the closing window
Data: NOAA 1991–2020 climate normals via Tulsa International Airport (5.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.