Pool season · Texas
New Braunfels Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
New Braunfels'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.
New Braunfels, TX — 182 swim days a yearReading it takes ten seconds: 52 dots, one per week. Solid teal is New Braunfels's swim season; the hollow teal run before it (February 26 to March 19) is when to open; the hollow amber run after is when to close, with November 11 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The New Braunfels pool calendar
Opening — target March 5
Open by March 5 — a two-week head start on the March 19 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 11
The window opens November 6 once water leaves the algae zone; the model deadline is November 11, a week ahead of the November 18 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on New Braunfels'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50° | 51° | 57° | 64° | 71° | 78° | 82° | 83° | 81° | 73° | 63° | 54° |
Warmest water typically June–September (peaking near 84°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Missouri City's pool season and North Richland Hills's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Texas season index.
New Braunfels pool season FAQ
When should I open my pool in New Braunfels, TX?
Open by March 5 — the model places New Braunfels's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The New Braunfels opening guide has the 12-step sequence.
When should I close my pool in New Braunfels?
Close by November 11: cool water keeps its winter chemistry, but freeze damage is the hard stop. The New Braunfels closing guide sequences the work backward from that date.
How long is the swim season in New Braunfels?
New Braunfels averages 182 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 New Braunfels?
An unheated pool near New Braunfels typically peaks around 84°F in high summer and bottoms out near 49°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 New Braunfels hits the closing window
Data: NOAA 1991–2020 climate normals via New Braunfels (4.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.