Pool season · Louisiana
Lafayette Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
One bar, one year, one Lafayette 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.
Lafayette, LA — 179 swim days a yearEach dot on the bar is one week of Lafayette's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (February 21–March 14), solid teal is swim season, and hollow amber is the closing window ending November 20. The black marker is today — its position against the colors is the entire executive summary.
The Lafayette pool calendar
Opening — target February 28
Open by February 28 — a two-week head start on the March 14 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline November 20
The window opens November 10 once water leaves the algae zone; the model deadline is November 20, a week ahead of the November 28 freeze normal.
Estimated water temperature by month
This is Lafayette'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52° | 53° | 59° | 65° | 72° | 79° | 82° | 82° | 81° | 74° | 64° | 56° |
Warmest water typically June–September (peaking near 82°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Kenner's pool season and Lake Charles's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Louisiana season index.
Lafayette pool season FAQ
When should I open my pool in Lafayette, LA?
Open by February 28 — the model places Lafayette's 61°F crossing about two weeks later, and every warm day you wait pushes the water toward the 65°F algae zone. The Lafayette opening guide has the 12-step sequence.
When should I close my pool in Lafayette?
Close by November 20: cool water keeps its winter chemistry, but freeze damage is the hard stop. The Lafayette closing guide sequences the work backward from that date.
How long is the swim season in Lafayette?
Lafayette averages 179 days a year with normal highs of 80°F or better — right on the statewide median. The Louisiana season index ranks all 13 covered cities by the same metric.
How warm does pool water get in Lafayette?
An unheated pool near Lafayette typically peaks around 82°F in high summer and bottoms out near 51°F in winter, spending roughly 4 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 Lafayette hits the closing window
Data: NOAA 1991–2020 climate normals via Lafayette (2.1 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.