Seaside Beach (30A) Water Temperature
Sea-surface temperature at Seaside Beach (30A), Florida · times in CDT
Updated 3:00 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 |
|---|---|---|---|
| Tue, Oct 13 | 83° / 63° | 7 | 0% |
| Wed, Oct 14 | 84° / 67° | 6 | 0% |
| Thu, Oct 15 | 88° / 69° | 6 | 0% |
| Fri, Oct 16 | 90° / 72° | 6 | 1% |
| Sat, Oct 17 | 80° / 63° | 6 | 1% |
| Sun, Oct 18 | 72° / 63° | 4 | 2% |
| Mon, Oct 19 | 84° / 66° | 6 | 4% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Seaside Beach (30A) warm enough to swim?
At 82°F, the water at Seaside Beach (30A) 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 3° above the October average of 79°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 87°F in August and dropping to about 61°F in January.
Frequently asked questions
How warm is the water at Seaside Beach (30A) right now?
The sea-surface temperature is about 82°F. That is 3° above the October average of 79°F here.
When is the water warm enough to swim at Seaside Beach (30A)?
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 Seaside Beach (30A)?
Around 87°F in August, based on 2023–2025 records. The coolest month is January at roughly 61°F.