Long Beach Island Water Temperature
Sea-surface temperature at Long Beach Island, New Jersey · times in EDT
Updated 4:00 AM EDT
How it compares today
Water temperature through the year
Monthly normals computed from 2023–2025 daily sea-surface temperature history.
Nearby water right now
7-day outlook
| Day | Air high / low | Max UV | Rain |
|---|---|---|---|
| Tue, Oct 13 | 68° / 55° | 5 | 5% |
| Wed, Oct 14 | 81° / 64° | 5 | 17% |
| Thu, Oct 15 | 70° / 58° | 5 | 17% |
| Fri, Oct 16 | 75° / 55° | 5 | 62% |
| Sat, Oct 17 | 55° / 41° | 5 | 14% |
| Sun, Oct 18 | 56° / 37° | 4 | 2% |
| Mon, Oct 19 | 61° / 46° | 4 | 2% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Long Beach Island warm enough to swim?
At 65°F, the water at Long Beach Island is cool but swimmable. Most swimmers are comfortable without a wetsuit above 72°F; below 62°F, cold-water shock becomes a real risk for unprotected swimmers.
That is right on the October average of 65°F for this beach.
The water averages above 70°F in July, August and September — 3 months of the year — peaking around 75°F in July and dropping to about 41°F in January.
Frequently asked questions
How warm is the water at Long Beach Island right now?
The sea-surface temperature is about 65°F. That is right on the October average of 65°F for this beach.
When is the water warm enough to swim at Long Beach Island?
The water averages above 70°F in July, August and September — 3 months of the year — peaking around 75°F in July and dropping to about 41°F in January.
What is the warmest the water gets at Long Beach Island?
Around 75°F in July, based on 2023–2025 records. The coolest month is January at roughly 41°F.