Pool season · Georgia
Columbus Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Columbus'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 Columbus's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 18–April 8 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 4. Wherever the today marker sits, the nearest color change is your next appointment.
The Columbus pool calendar
Opening — target March 25
Target March 25; the practical window runs March 18–April 8, and the 7-day mean crosses the 61°F threshold around April 8. Cold-water starts are the cheap ones.
Closing — deadline November 4
The window opens October 26 once water leaves the algae zone; the model deadline is November 4, a week ahead of the November 11 freeze normal.
Estimated water temperature by month
This is Columbus's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 46° | 47° | 52° | 60° | 67° | 75° | 80° | 81° | 78° | 70° | 59° | 51° |
Warmest water typically July–September (peaking near 81°F); heaters and covers shift any month up.
Email me when Columbus hits the closing window
Data: NOAA 1991–2020 climate normals via Columbus #2 (3.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.