Water temperature in Shell Island (FL) in August

Is it warm enough to swim in Shell Island in August? Average water temperature in Shell Island in August is 85.6°F and therefore suitable for comfortable swimming. The warmest sea in Shell Island in August is 88.7°F, and the coldest is 81.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Shell Island

Changes water temperature in Shell Island in August 2025, 2024

To get an accurate forecast for the water temperature in Shell Island 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 Island, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

Average water temperature in Shell Island in August over a decade

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

The nearest locations with the average water temperature in August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

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Our report for Shell Island 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.