Siesta Key Water Temperature

(Today) 2024

29.7°C / 85.5°F

The water will feel unpleasantly warm (stifling). May be a little too warm for any kind of activity, particularly if sunny.

Current weather

26°C / 78°F
(clear sky)
Partly cloudy
Wind
0 mph
Humidity
88%

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.

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.