Mississippi Pool Season: Opening & Closing Dates by City

Local dates for every featured Mississippi city — when the water warms up, when it cools off, and how long the season actually lasts.

City Opening window Closing window Season
Jackson Mar 30 – Apr 24 Oct 13 – Oct 29 ≈ 192 days
Gulfport Mar 19 – Apr 16 Oct 22 – Nov 9 ≈ 212 days
Tupelo Apr 15 – May 7 Oct 2 – Oct 19 ≈ 168 days

Windows show the stretch when each city's daily average passes through the low-to-mid 60s°F (1991–2020 NOAA records, nearest station to each city). Click a city for its month-by-month table and full season notes.

Season geography

Across Mississippi's featured cities, typical openings spread from Apr 2 to Apr 26, closings from Oct 11 to Oct 31, and the unheated season runs 168–212 days depending on where you are. Elevation, coastal water, and urban heat all pull real dates around, which is exactly why a state-level answer isn't enough.

For your exact town, the pool season lookup takes a ZIP code. Opening day itself is a chemistry job — the dosing calculator turns your first test reading of the year into exact amounts.

Mississippi planning pages

When to open — Mississippi When to close — Mississippi All states →