South Beach Water Temperature
Sea-surface temperature at South Beach, Florida · 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 | 90° / 80° | 9 | 22% |
| Sat, Aug 29 | 89° / 80° | 9 | 34% |
| Sun, Aug 30 | 90° / 83° | 8 | 34% |
| Mon, Aug 31 | 89° / 86° | 7 | 42% |
| Tue, Sep 1 | 89° / 85° | 8 | 40% |
| Wed, Sep 2 | 86° / 83° | 7 | 46% |
| Thu, Sep 3 | 87° / 84° | 7 | 56% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is South Beach warm enough to swim?
At 89°F, the water at South 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 89°F for this beach.
The water stays above 70°F essentially year round, ranging from about 74°F to 89°F.
Frequently asked questions
How warm is the water at South Beach right now?
The sea-surface temperature is about 89°F. That is right on the August average of 89°F for this beach.
When is the water warm enough to swim at South Beach?
The water stays above 70°F essentially year round, ranging from about 74°F to 89°F.
What is the warmest the water gets at South Beach?
Around 89°F in July, based on 2023–2025 records. The coolest month is January at roughly 74°F.