Pool season · New York
Brooklyn Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
One bar, one year, one Brooklyn 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.
The bar compresses Brooklyn's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 20–May 11 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 17. Wherever the today marker sits, the nearest color change is your next appointment.
The Brooklyn pool calendar
Opening — target April 27
Open by April 27 — a two-week head start on the May 11 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 17
The window opens October 7 once water leaves the algae zone; the model deadline is October 17, a week ahead of the November 19 freeze normal.
Estimated water temperature by month
This is Brooklyn'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 35° | 34° | 39° | 48° | 58° | 67° | 76° | 77° | 73° | 64° | 53° | 43° |
The curve peaks near 78°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Brooklyn hits the closing window
Data: NOAA 1991–2020 climate normals via Ny Ave V Brooklyn (4.2 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.