Assateague Island Beach Water Temperature
Sea-surface temperature at Assateague Island Beach, Maryland · times in EDT
Updated 9:00 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 |
|---|---|---|---|
| Fri, Aug 28 | 82° / 72° | 6 | 40% |
| Sat, Aug 29 | 78° / 70° | 6 | 3% |
| Sun, Aug 30 | 82° / 72° | 7 | 2% |
| Mon, Aug 31 | 86° / 73° | 6 | 5% |
| Tue, Sep 1 | 78° / 72° | 6 | 9% |
| Wed, Sep 2 | 83° / 75° | 7 | 15% |
| Thu, Sep 3 | 99° / 77° | 7 | 15% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Assateague Island Beach warm enough to swim?
At 77°F, the water at Assateague Island Beach 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 right on the August average of 77°F for this beach.
The water averages above 70°F in June, July, August and September — 4 months of the year — peaking around 78°F in July and dropping to about 43°F in January.
Frequently asked questions
How warm is the water at Assateague Island Beach right now?
The sea-surface temperature is about 77°F. That is right on the August average of 77°F for this beach.
When is the water warm enough to swim at Assateague Island Beach?
The water averages above 70°F in June, July, August and September — 4 months of the year — peaking around 78°F in July and dropping to about 43°F in January.
What is the warmest the water gets at Assateague Island Beach?
Around 78°F in July, based on 2023–2025 records. The coolest month is January at roughly 43°F.