Pool season · South Carolina
Mauldin Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Mauldin's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Mauldin, SC — 109 swim days a yearThe bar compresses Mauldin's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 31–April 21 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 22. Wherever the today marker sits, the nearest color change is your next appointment.
The Mauldin pool calendar
Opening — target April 7
Open by April 7 — a two-week head start on the April 21 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 22
The window opens October 12 once water leaves the algae zone; the model deadline is October 22, a week ahead of the November 7 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Mauldin'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 41° | 42° | 48° | 56° | 64° | 71° | 77° | 77° | 74° | 65° | 54° | 46° |
The curve peaks near 78°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Greenville's pool season and Mount Pleasant's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the South Carolina season index.
Mauldin pool season FAQ
When should I open my pool in Mauldin, SC?
The site model recommends opening by April 7 — about two weeks before Mauldin's 7-day mean temperature crosses 61°F, while the water is still too cold for algae. The step-by-step sequence is in the Mauldin opening guide.
When should I close my pool in Mauldin?
Winterize by October 22. The model holds the deadline a week ahead of Mauldin's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Mauldin closing guide.
How long is the swim season in Mauldin?
Mauldin averages 109 days a year with normal highs of 80°F or better — about 10 days later than the South Carolina median. The South Carolina season index ranks all 12 covered cities by the same metric.
How warm does pool water get in Mauldin?
An unheated pool near Mauldin typically peaks around 78°F in high summer and bottoms out near 41°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Mauldin hits the closing window
Data: NOAA 1991–2020 climate normals via Greenville (4.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.