Pool season · Texas
Houston Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Houston's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
The bar compresses Houston's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the February 11–March 4 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 30. Wherever the today marker sits, the nearest color change is your next appointment.
The Houston pool calendar
Opening — target February 18
Open by February 18 — a two-week head start on the March 4 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 30
The window opens November 20 once water leaves the algae zone; the model deadline is November 30, a week ahead of the December 25 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Houston'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 54° | 55° | 61° | 67° | 74° | 81° | 84° | 86° | 84° | 77° | 67° | 59° |
Warmest water typically June–September (peaking near 86°F); heaters and covers shift any month up.
Email me when Houston hits the closing window
Data: NOAA 1991–2020 climate normals via Houston-port (7.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.