Pool season · Texas
Leander Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Leander'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.
Leander, TX — 181 swim days a yearThe bar compresses Leander's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 2–March 23 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 16. Wherever the today marker sits, the nearest color change is your next appointment.
The Leander pool calendar
Opening — target March 9
Target March 9; the practical window runs March 2–March 23, and the 7-day mean crosses the 61°F threshold around March 23. Cold-water starts are the cheap ones.
Closing — deadline November 16
The window opens November 6 once water leaves the algae zone; the model deadline is November 16, a week ahead of the November 24 freeze normal.
Estimated water temperature by month
This is Leander'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° | 63° | 71° | 79° | 83° | 85° | 82° | 74° | 63° | 53° |
Warmest water typically June–September (peaking near 85°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with League City's pool season and Lewisville's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Leander pool season FAQ
When should I open my pool in Leander, TX?
Target March 9. That date backs off two weeks from the day Leander's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Leander opening guide.
When should I close my pool in Leander?
The closing deadline is November 16 — late enough that the water has cooled out of the algae zone, early enough to beat Leander's first-freeze normal by about a week. See the Leander closing guide for the winterizing steps.
How long is the swim season in Leander?
Leander averages 181 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 Leander?
An unheated pool near Leander typically peaks around 85°F in high summer and bottoms out near 48°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 Leander hits the closing window
Data: NOAA 1991–2020 climate normals via Georgetown Lake (11.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.