Pool season · Texas
Dallas Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Dallas'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.
Dallas, TX — 170 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is Dallas's swim season; the hollow teal run before it (February 28 to March 21) is when to open; the hollow amber run after is when to close, with November 16 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Dallas pool calendar
Opening — target March 7
Target March 7; the practical window runs February 28–March 21, and the 7-day mean crosses the 61°F threshold around March 21. Cold-water starts are the cheap ones.
Closing — deadline November 16
Hold the cover until November 6, then winterize by November 16, a week ahead of the November 29 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Dallas's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 48° | 50° | 56° | 64° | 71° | 80° | 86° | 88° | 84° | 75° | 63° | 53° |
Warmest water typically June–September (peaking near 88°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Corpus Christi's pool season and Denton's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Dallas pool season FAQ
When should I open my pool in Dallas, TX?
Open by March 7 — the model places Dallas's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Dallas opening guide has the 12-step sequence.
When should I close my pool in Dallas?
Close by November 16: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Dallas closing guide sequences the work backward from that date.
How long is the swim season in Dallas?
Dallas averages 170 days a year with normal highs of 80°F or better — right on the statewide median. The Texas season index ranks all 68 covered cities by the same metric.
How warm does pool water get in Dallas?
An unheated pool near Dallas typically peaks around 88°F in high summer and bottoms out near 47°F in winter, spending roughly 4 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 Dallas hits the closing window
Data: NOAA 1991–2020 climate normals via Dallas Love Field (6.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.