Galveston Beach Water Temperature
Sea-surface temperature at Galveston Beach, Texas · 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 | 91° / 79° | 8 | 30% |
| Sat, Aug 29 | 91° / 79° | 8 | 5% |
| Sun, Aug 30 | 86° / 84° | 8 | 2% |
| Mon, Aug 31 | 85° / 85° | 8 | 7% |
| Tue, Sep 1 | 86° / 84° | 8 | 19% |
| Wed, Sep 2 | 85° / 84° | 8 | 14% |
| Thu, Sep 3 | 85° / 84° | 8 | 17% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Galveston Beach warm enough to swim?
At 88°F, the water at Galveston 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 1° below the August average of 89°F here.
The water averages above 70°F in April, May, June, July, August, September, October and November — 8 months of the year — peaking around 89°F in August and dropping to about 57°F in January.
Frequently asked questions
How warm is the water at Galveston Beach right now?
The sea-surface temperature is about 88°F. That is 1° below the August average of 89°F here.
When is the water warm enough to swim at Galveston Beach?
The water averages above 70°F in April, May, June, July, August, September, October and November — 8 months of the year — peaking around 89°F in August and dropping to about 57°F in January.
What is the warmest the water gets at Galveston Beach?
Around 89°F in August, based on 2023–2025 records. The coolest month is January at roughly 57°F.