North Carolina Pool Season: Opening & Closing Dates by City

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

City Opening window Closing window Season
Charlotte Apr 18 – May 12 Sep 28 – Oct 15 ≈ 160 days
Raleigh Apr 20 – May 12 Sep 28 – Oct 15 ≈ 158 days
Asheville May 3 – May 28 Sep 16 – Oct 4 ≈ 133 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 North Carolina's featured cities, typical openings spread from Apr 30 to May 15, closings from Sep 25 to Oct 7, and the unheated season runs 133–160 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.

North Carolina planning pages

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