Pool season · North Carolina
Charlotte Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Charlotte pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Charlotte's swim season; the hollow teal run before it (March 25 to April 15) is when to open; the hollow amber run after is when to close, with October 27 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Charlotte pool calendar
Opening — target April 1
Target April 1; the practical window runs March 25–April 15, and the 7-day mean crosses the 61°F threshold around April 15. Cold-water starts are the cheap ones.
Closing — deadline October 27
The window opens October 18 once water leaves the algae zone; the model deadline is October 27, a week ahead of the November 3 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Charlotte'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43° | 43° | 49° | 57° | 66° | 73° | 79° | 80° | 76° | 67° | 56° | 48° |
Warmest water typically July–August (peaking near 80°F); heaters and covers shift any month up.
Email me when Charlotte hits the closing window
Data: NOAA 1991–2020 climate normals via Charlotte Douglas Airport (7.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.