Pool season · New Jersey
Newark Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
This is the one-page view of Newark's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
Newark, NJ — 91 swim days a yearThe bar compresses Newark's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 19–May 10 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 15. Wherever the today marker sits, the nearest color change is your next appointment.
The Newark pool calendar
Opening — target April 26
Open by April 26 — a two-week head start on the May 10 crossing keeps startup chemistry small and beats the local service rush.
Closing — deadline October 15
The window opens October 5 once water leaves the algae zone; the model deadline is October 15, a week ahead of the November 6 freeze normal.
Estimated water temperature by month
This is Newark'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 34° | 33° | 38° | 47° | 58° | 68° | 76° | 77° | 73° | 63° | 51° | 41° |
The curve peaks near 78°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Jersey City's pool season and Paterson's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the New Jersey season index.
Newark pool season FAQ
When should I open my pool in Newark, NJ?
The site model recommends opening by April 26 — about two weeks before Newark's 7-day mean temperature crosses 61°F, while the water is still too cold for algae. The step-by-step sequence is in the Newark opening guide.
When should I close my pool in Newark?
Winterize by October 15. The model holds the deadline a week ahead of Newark's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Newark closing guide.
How long is the swim season in Newark?
Newark averages 91 days a year with normal highs of 80°F or better — about 4 days earlier than the New Jersey median. The New Jersey season index ranks all 7 covered cities by the same metric.
How warm does pool water get in Newark?
An unheated pool near Newark typically peaks around 78°F in high summer and bottoms out near 32°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 Newark hits the closing window
Data: NOAA 1991–2020 climate normals via Harrison (1.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.