Long Beach Island Water Temperature
Sea-surface temperature at Long Beach Island, New Jersey · times in EDT
Updated 7:03 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 |
|---|---|---|---|
| Fri, Aug 28 | 80° / 70° | 6 | 19% |
| Sat, Aug 29 | 76° / 68° | 6 | 2% |
| Sun, Aug 30 | 78° / 68° | 7 | 14% |
| Mon, Aug 31 | 81° / 70° | 7 | 14% |
| Tue, Sep 1 | 86° / 73° | 7 | 24% |
| Wed, Sep 2 | 84° / 74° | 6 | 36% |
| Thu, Sep 3 | 91° / 73° | 6 | 36% |
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 77°F, the water at Long Beach Island is comfortable. 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 2° above the August average of 75°F here.
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 77°F. That is 2° above the August average of 75°F here.
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.