PoolWindow

Pool season · Alabama

Mobile Pool Season: the Year on One Bar

Last updated: July 15, 2026 · dates · water temp

One bar, one year, one Mobile 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.

J F M A M J J A S O N D today (build date)

off-season opening window swim season closing window

Reading it takes ten seconds: 52 dots, one per week. Solid teal is Mobile's swim season; the hollow teal run before it (February 20 to March 13) is when to open; the hollow amber run after is when to close, with November 23 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.

The Mobile pool calendar

February 27open by
November 23close by
17880°F+ days
84°Fwater peak

Opening — target February 27

Open by February 27 — a two-week head start on the March 13 crossing keeps startup chemistry small and beats the local service rush.

Full opening guide

Closing — deadline November 23

Hold the cover until November 13, then winterize by November 23, a week ahead of the December 6 freeze normal. Late and cold beats early and warm.

Full closing guide

Where the water sits today

SEASONAL VIEW

Estimated unheated pool water temp (site model, ±5°F). The live estimate loads in your browser from Open-Meteo air temperatures; in a typical year Mobile water runs about 52°F at its winter floor and 84°F at its summer peak.

40 45 50 55 60 65 70 75 80 85 58 open 65 algae

Estimated water temperature by month

This is Mobile'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.

Site-model seasonal water estimates for an unheated in-ground pool near Mobile Dwtn Airport — ±5°F, see methodology.
JanFebMarAprMayJunJulAugSepOctNovDec
53°54°59°65°72°79°83°84°82°76°65°57°

Warmest water typically June–September (peaking near 84°F); heaters and covers shift any month up.

Data: NOAA 1991–2020 climate normals via Mobile Dwtn Airport (4.6 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.