Pool season · New York
Buffalo Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Buffalo'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.
Buffalo, NY — 29 swim days a yearEach dot on the bar is one week of Buffalo's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (May 5–May 26), solid teal is swim season, and hollow amber is the closing window ending October 2. The black marker is today — its position against the colors is the entire executive summary.
The Buffalo pool calendar
Opening — target May 12
Open by May 12 — a two-week head start on the May 26 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 2
Hold the cover until September 22, then winterize by October 2, a week ahead of the October 26 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on Buffalo'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 28° | 25° | 30° | 40° | 53° | 63° | 70° | 71° | 67° | 57° | 46° | 36° |
The curve peaks near 72°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Brooklyn's pool season and Manhattan's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the New York season index.
Buffalo pool season FAQ
When should I open my pool in Buffalo, NY?
Target May 12. That date backs off two weeks from the day Buffalo's 7-day mean temperature reaches 61°F, so you start up in cold, algae-resistant water. Work the full checklist in the Buffalo opening guide.
When should I close my pool in Buffalo?
The closing deadline is October 2 — late enough that the water has cooled out of the algae zone, early enough to beat Buffalo's first-freeze normal by about a week. See the Buffalo closing guide for the winterizing steps.
How long is the swim season in Buffalo?
Buffalo averages 29 days a year with normal highs of 80°F or better — about 6 days later than the New York median. The New York season index ranks all 16 covered cities by the same metric.
How warm does pool water get in Buffalo?
An unheated pool near Buffalo typically peaks around 72°F in high summer and bottoms out near 25°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 Buffalo hits the closing window
Data: NOAA 1991–2020 climate normals via Buffalo (6.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.