Pool season · South Carolina
Beaufort Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Beaufort 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.
Beaufort, SC — 166 swim days a yearEach dot on the bar is one week of Beaufort's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (March 4–March 25), solid teal is swim season, and hollow amber is the closing window ending November 17. The black marker is today — its position against the colors is the entire executive summary.
The Beaufort pool calendar
Opening — target March 11
Open by March 11 — a two-week head start on the March 25 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 17
The window opens November 7 once water leaves the algae zone; the model deadline is November 17, a week ahead of the December 3 freeze normal.
Estimated water temperature by month
This is Beaufort'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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51° | 51° | 57° | 63° | 71° | 78° | 82° | 83° | 80° | 73° | 63° | 55° |
Warmest water typically June–September (peaking near 83°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Sumter's pool season and Charleston's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the South Carolina season index.
Beaufort pool season FAQ
When should I open my pool in Beaufort, SC?
Open by March 11 — the model places Beaufort's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Beaufort opening guide has the 12-step sequence.
When should I close my pool in Beaufort?
Close by November 17: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Beaufort closing guide sequences the work backward from that date.
How long is the swim season in Beaufort?
Beaufort averages 166 days a year with normal highs of 80°F or better — about 17 days earlier 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 Beaufort?
An unheated pool near Beaufort typically peaks around 83°F in high summer and bottoms out near 50°F in winter, spending roughly 3 months at or above the 78°F comfort line most swimmers prefer. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Beaufort hits the closing window
Data: NOAA 1991–2020 climate normals via Beaufort Mcas (1.7 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.