Pool season · Florida
Kissimmee Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Kissimmee'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.
Kissimmee, FL — 224 swim days a yearEach dot on the bar is one week of Kissimmee's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (January 12–February 2), solid teal is swim season, and hollow amber is the closing window ending December 30. The black marker is today — its position against the colors is the entire executive summary.
The Kissimmee pool calendar
Opening — target January 19
Target January 19; the practical window runs January 12–February 2, and the 7-day mean crosses the 61°F threshold around February 2. Cold-water starts are the cheap ones.
Closing — deadline December 30
Hold the cover until December 25, then winterize by December 30, a week ahead of the January 6 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Kissimmee'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 61° | 61° | 64° | 69° | 74° | 79° | 82° | 83° | 82° | 79° | 71° | 65° |
Warmest water typically June–October (peaking near 83°F); heaters and covers shift any month up.
Every station tells its own story: compare this curve with Kendall's pool season and Lakeland's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the Florida season index.
Kissimmee pool season FAQ
When should I open my pool in Kissimmee, FL?
Target January 19. That date backs off two weeks from the day Kissimmee's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Kissimmee opening guide.
When should I close my pool in Kissimmee?
The closing deadline is December 30 — late enough that the water has cooled out of the algae zone, early enough to beat Kissimmee's first-freeze normal by about a week. See the Kissimmee closing guide for the winterizing steps.
How long is the swim season in Kissimmee?
Kissimmee averages 224 days a year with normal highs of 80°F or better — about 5 days earlier than the Florida median. The Florida season index ranks all 64 covered cities by the same metric.
How warm does pool water get in Kissimmee?
An unheated pool near Kissimmee typically peaks around 83°F in high summer and bottoms out near 60°F in winter, spending roughly 5 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 Kissimmee hits the closing window
Data: NOAA 1991–2020 climate normals via Kissimmee 2 (2.0 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.