World sea water temperatures

Water temperature in Shell Key (FL) in August

Is it warm enough to swim in Shell Key in August? Average water temperature in Shell Key in August is 86.7°F and therefore suitable for comfortable swimming. The warmest sea in Shell Key in August is 91.8°F, and the coldest is 83.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Shell Key

Changes water temperature in Shell Key in August 2025, 2024

To get an accurate forecast for the water temperature in Shell Key for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Shell Key, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 190.1°F88.7°F84.6°F90.1°F
August 290°F88.7°F84.2°F90°F
August 391.8°F88.5°F83.7°F91.8°F
August 489.8°F87.8°F83.8°F89.8°F
August 589.8°F87.3°F84.4°F89.8°F
August 690°F84.4°F84.4°F90°F
August 790°F86°F85.1°F90°F
August 889.6°F86.5°F84.6°F90.3°F
August 989.2°F86.4°F84.9°F90.7°F
August 1088.9°F86.7°F84.9°F90.7°F
August 1188.3°F86.7°F85.1°F91.6°F
August 1287.3°F86.7°F85.6°F90.9°F
August 1389.1°F88.5°F85.6°F90.9°F
August 1488.7°F88.3°F85.5°F91°F
August 1588.7°F88.7°F85.5°F90°F
Day 2025 2024 Min Max
August 1688.9°F87.4°F85.5°F90.7°F
August 1789.4°F87.4°F85.5°F90.1°F
August 1890°F86.7°F85.1°F90°F
August 1989.1°F86.9°F85.1°F89.1°F
August 2089.4°F87.1°F84.9°F89.4°F
August 2189.2°F87.8°F84.2°F89.2°F
August 2289.2°F87.3°F84°F89.2°F
August 2388.9°F86.4°F83.8°F88.9°F
August 2488.5°F86.2°F84.2°F88.5°F
August 2588°F86.7°F84.4°F88.3°F
August 2687.6°F86.5°F84°F88.2°F
August 2786.2°F86.9°F83.7°F87.6°F
August 2886°F86.7°F83.3°F88°F
August 2986°F86.4°F83.3°F88°F
August 3086.2°F86°F83.7°F87.6°F
August 3186.2°F86°F84.2°F87.6°F
Shell Key water temp chart in August

Average water temperature in Shell Key in August over a decade

20162017201820192020
86.5°F87.4°F86.9°F86.4°F87.3°F
20212022202320242025
86.5°F87.1°F88.9°F87.1°F90°F

Shell Key water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in August?

Want to know where the water temperature in August is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

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Our report for Shell Key is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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