Pool season · South Carolina
Mount Pleasant Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Mount Pleasant'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.
The bar compresses Mount Pleasant's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 16–April 6 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 15. Wherever the today marker sits, the nearest color change is your next appointment.
The Mount Pleasant pool calendar
Opening — target March 23
Open by March 23 — a two-week head start on the April 6 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 15
Hold the cover until November 5, then winterize by November 15, a week ahead of the November 30 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Mount Pleasant'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 49° | 49° | 53° | 60° | 69° | 76° | 81° | 82° | 79° | 73° | 62° | 54° |
Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.
Email me when Mount Pleasant hits the closing window
Data: NOAA 1991–2020 climate normals via Sullivans Island (6.7 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.