Siesta Key Water Temperature

(Today) 2024

24.7°C / 76.5°F

The water will feel warm (balmy). Most people will be OK with just bathers / swimming costume at this temperature. If you intend to stay in the water for a while a thin shorty wetsuit will suffice.

Current weather

20°C / 68°F
(clear sky)
Partly cloudy
Wind
9 mph
Humidity
72%

The measurements for the water temperature in Siesta Key, Florida are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Siesta Key water temperature derived from many years of historical sea surface temperature data.

Siesta Key average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Siesta Key
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 15.1 15.2 16.6 19.9 22.6 25.8 28.3 29.1 28.3 25.1 21.2 18.4
Max °C 20.4 20.8 22 25.7 28.7 30.3 31 31.7 30.2 29.5 26.5 22.3
Min °F 61.3 61.6 64 70.1 75.1 80.2 84 85.4 83.7 78.9 72.2 66.6
Max °F 66.6 67.2 69.4 75.9 81.2 84.7 86.7 88 85.6 83.3 77.5 70.5

The warmest water temperature is in August with an average around 86.7°F / 30.4°C. The coldest month is January with an average water temperature of 63.9°F / 17.7°C.