Pool season · Texas
Spring Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Spring'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.
Spring, TX — 193 swim days a yearThe bar compresses Spring's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the February 10–March 3 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 28. Wherever the today marker sits, the nearest color change is your next appointment.
The Spring pool calendar
Opening — target February 17
Open by February 17 — a two-week head start on the March 3 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 28
The window opens November 18 once water leaves the algae zone; the model deadline is November 28, a week ahead of the December 9 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Spring'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° | 83° | 76° | 66° | 58° |
Warmest water typically June–September (peaking near 86°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Sherman's pool season and Sugar Land's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Spring pool season FAQ
When should I open my pool in Spring, TX?
Target February 17. That date backs off two weeks from the day Spring's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Spring opening guide.
When should I close my pool in Spring?
The closing deadline is November 28 — late enough that the water has cooled out of the algae zone, early enough to beat Spring's first-freeze normal by about a week. See the Spring closing guide for the winterizing steps.
How long is the swim season in Spring?
Spring averages 193 days a year with normal highs of 80°F or better — about 19 days earlier than the Texas median. The Texas season index ranks all 68 covered cities by the same metric.
How warm does pool water get in Spring?
An unheated pool near Spring typically peaks around 86°F in high summer and bottoms out near 54°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 Spring hits the closing window
Data: NOAA 1991–2020 climate normals via Houston Intercont Airport (5.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.