Pool season · Tennessee
Nashville Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Nashville'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 Nashville's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 30–April 20 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 23. Wherever the today marker sits, the nearest color change is your next appointment.
The Nashville pool calendar
Opening — target April 6
Open by April 6 — a two-week head start on the April 20 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 23
Hold the cover until October 13, then winterize by October 23, a week ahead of the October 31 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Nashville'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 39° | 39° | 46° | 56° | 64° | 72° | 78° | 79° | 75° | 66° | 54° | 45° |
Warmest water typically July–August (peaking near 79°F); heaters and covers shift any month up.
Email me when Nashville hits the closing window
Data: NOAA 1991–2020 climate normals via Shelby Bottoms Nature (3.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.