Pool season · Alabama
Birmingham Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Birmingham 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 Birmingham's swim season; the hollow teal run before it (March 16 to April 6) is when to open; the hollow amber run after is when to close, with November 4 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.
The Birmingham 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 4
The window opens October 25 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
Monthly averages of the site's water model run on Birmingham'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 45° | 46° | 53° | 60° | 68° | 76° | 80° | 82° | 79° | 70° | 59° | 50° |
Warmest water typically July–September (peaking near 82°F); heaters and covers shift any month up.
Email me when Birmingham hits the closing window
Data: NOAA 1991–2020 climate normals via Birmingham Airport (4.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.