Pool season · Louisiana
Mandeville Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Mandeville'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 Mandeville's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the February 25–March 18 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 11. Wherever the today marker sits, the nearest color change is your next appointment.
The Mandeville pool calendar
Opening — target March 4
Open by March 4 — a two-week head start on the March 18 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 11
Hold the cover until November 5, then winterize by November 11, a week ahead of the November 18 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Mandeville'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51° | 52° | 58° | 64° | 70° | 77° | 80° | 81° | 79° | 73° | 63° | 55° |
Warmest water typically July–September (peaking near 81°F); heaters and covers shift any month up.
Email me when Mandeville hits the closing window
Data: NOAA 1991–2020 climate normals via Covington 4 NNW (10.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.