Pool season · Oklahoma
Tulsa Pool Season: the Year on One Bar
Last updated: July 25, 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.
Tulsa, OK — 135 swim days a yearEach 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.
Every station tells its own story: compare this curve with Oklahoma City's pool season and Broken Arrow's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Oklahoma season index.
Tulsa pool season FAQ
When should I open my pool in Tulsa, OK?
Target April 3. That date backs off two weeks from the day Tulsa's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Tulsa opening guide.
When should I close my pool in Tulsa?
The closing deadline is October 28 — late enough that the water has cooled out of the algae zone, early enough to beat Tulsa's first-freeze normal by about a week. See the Tulsa closing guide for the winterizing steps.
How long is the swim season in Tulsa?
Tulsa averages 135 days a year with normal highs of 80°F or better — about 4 days earlier than the Oklahoma median. The Oklahoma season index ranks all 6 covered cities by the same metric.
How warm does pool water get in Tulsa?
An unheated pool near Tulsa typically peaks around 84°F in high summer and bottoms out near 38°F in winter, spending roughly 3 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
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.