Pool season · South Carolina
Florence Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Florence'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.
Reading it takes ten seconds: 52 dots, one per week. Solid teal is Florence's swim season; the hollow teal run before it (March 14 to April 4) is when to open; the hollow amber run after is when to close, with November 6 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Florence pool calendar
Opening — target March 21
Target March 21; the practical window runs March 14–April 4, and the 7-day mean crosses the 61°F threshold around April 4. Cold-water starts are the cheap ones.
Closing — deadline November 6
The window opens October 28 once water leaves the algae zone; the model deadline is November 6, a week ahead of the November 13 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Florence'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 48° | 53° | 61° | 69° | 76° | 81° | 82° | 79° | 71° | 60° | 52° |
Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.
Email me when Florence hits the closing window
Data: NOAA 1991–2020 climate normals via Florence Regional Airport (3.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.