Grayton Beach Water Temperature
Sea-surface temperature at Grayton Beach, Florida · times in CDT
Updated 6:03 AM CDT
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 | 84° / 74° | 6 | 73% |
| Sat, Aug 29 | 82° / 75° | 5 | 55% |
| Sun, Aug 30 | 93° / 72° | 8 | 53% |
| Mon, Aug 31 | 94° / 75° | 8 | 28% |
| Tue, Sep 1 | 97° / 77° | 8 | 32% |
| Wed, Sep 2 | 98° / 77° | 8 | 24% |
| Thu, Sep 3 | 99° / 78° | 7 | 12% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Grayton Beach warm enough to swim?
At 87°F, the water at Grayton Beach is warm — great for swimming. 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 87°F for this beach.
The water averages above 70°F in April, May, June, July, August, September, October and November — 8 months of the year — peaking around 87°F in August and dropping to about 61°F in January.
Frequently asked questions
How warm is the water at Grayton Beach right now?
The sea-surface temperature is about 87°F. That is right on the August average of 87°F for this beach.
When is the water warm enough to swim at Grayton Beach?
The water averages above 70°F in April, May, June, July, August, September, October and November — 8 months of the year — peaking around 87°F in August and dropping to about 61°F in January.
What is the warmest the water gets at Grayton Beach?
Around 87°F in August, based on 2023–2025 records. The coolest month is January at roughly 61°F.