July is a popular month to ask about Siesta Key Beach because conditions can shift week to week along this coast. Expect the water near 28.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Gulf of Mexico.
Siesta Key Beach sea temperature in July — averages 28.0°C
The sea at Siesta Key Beach in United States averages 28.0°C during July, based on long-run climatology for the Gulf of Mexico. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · July
28.0°C
tropical · Excellent
Live water now
…
Recommended wetsuit
No wetsuit
At 28.0°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Monthly comparison
Yes — ideal swimming weather · Siesta Key Beach
Can you swim at Siesta Key Beach in June? — 26.0°C water26.0°CCan you swim at Siesta Key Beach in July? — 28.0°C water28.0°CCan you swim at Siesta Key Beach in August? — 28.0°C water28.0°CCan you swim at Siesta Key Beach in September? — 27.0°C water27.0°CCan you swim at Siesta Key Beach in October? — 25.0°C water25.0°CCan you swim at Siesta Key Beach in November? — 22.0°C water22.0°C
Frequently asked questions
What is the average sea temperature at Siesta Key Beach in July?
Siesta Key Beach averages 28.0°C in July, based on long-run climatology for the Gulf of Mexico.
Is the sea warm enough to swim at Siesta Key Beach in July?
Yes, most swimmers find 28.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Siesta Key Beach in July?
No wetsuit needed.