Pool season · Texas
Georgetown Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Georgetown'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.
Georgetown, TX — 181 swim days a yearEach dot on the bar is one week of Georgetown'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 2–March 23), solid teal is swim season, and hollow amber is the closing window ending November 16. The black marker is today — its position against the colors is the entire executive summary.
The Georgetown 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
Hold the cover until November 6, then winterize by November 16, a week ahead of the November 24 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Georgetown'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 Garland's pool season and Grand Prairie's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
Georgetown pool season FAQ
When should I open my pool in Georgetown, TX?
Target March 9. That date backs off two weeks from the day Georgetown's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Georgetown opening guide.
When should I close my pool in Georgetown?
The closing deadline is November 16 — late enough that the water has cooled out of the algae zone, early enough to beat Georgetown's first-freeze normal by about a week. See the Georgetown closing guide for the winterizing steps.
How long is the swim season in Georgetown?
Georgetown 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 Georgetown?
An unheated pool near Georgetown 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 Georgetown hits the closing window
Data: NOAA 1991–2020 climate normals via Georgetown Lake (1.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.