World sea water temperatures

Water temperature in Fiesta Key (FL) in August

Is it warm enough to swim in Fiesta Key in August? Average water temperature in Fiesta Key in August is 86.7°F and therefore suitable for comfortable swimming. The warmest sea in Fiesta Key in August is 90.1°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 Fiesta Key

Changes water temperature in Fiesta Key in August 2025, 2024

To get an accurate forecast for the water temperature in Fiesta 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 Fiesta 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 188.2°F88°F84.9°F88.2°F
August 288°F87.8°F84.9°F88.5°F
August 388.2°F87.4°F84.9°F88.7°F
August 487.6°F87.3°F85.6°F88.5°F
August 588°F86.5°F85.6°F89.4°F
August 688.3°F86.4°F85.8°F89.4°F
August 788°F86.7°F85.5°F89.1°F
August 887.8°F86.9°F85.1°F89.6°F
August 988°F86.7°F85.6°F90.1°F
August 1088°F87.6°F85.3°F89.4°F
August 1186.9°F87.6°F85.5°F90°F
August 1286.9°F87.1°F85.5°F89.4°F
August 1387.3°F88.2°F85.6°F89.4°F
August 1487.1°F88.5°F85.5°F88.7°F
August 1587.8°F88°F85.6°F88.9°F
Day 2025 2024 Min Max
August 1687.6°F87.8°F85.8°F88.5°F
August 1788.3°F88.3°F85.5°F88.7°F
August 1888°F87.3°F85.3°F88.5°F
August 1988.5°F87.4°F85.3°F88.5°F
August 2088.5°F87.6°F85.3°F88.5°F
August 2188.7°F87.8°F84.6°F88.7°F
August 2288.5°F87.8°F84.6°F88.5°F
August 2388.7°F88°F84.7°F88.7°F
August 2488.3°F87.3°F85.3°F88.3°F
August 2588.2°F86.7°F85.6°F88.2°F
August 2689.6°F86.5°F84.9°F89.6°F
August 2789.4°F86.5°F84.4°F89.4°F
August 2888.9°F86.4°F83.3°F88.9°F
August 2988.7°F86.5°F83.8°F88.7°F
August 3088.5°F86°F84°F88.5°F
August 3188.5°F86.4°F83.3°F88.5°F
Fiesta Key water temp chart in August

Average water temperature in Fiesta Key in August over a decade

20162017201820192020
86.2°F86.7°F86°F87.3°F86.7°F
20212022202320242025
86.5°F86.7°F88.3°F87.3°F88°F

Fiesta Key sea state in August

Chart comparing the height of waves in Fiesta Key in August over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Fiesta Key in August

Fiesta 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

Temperature in neighboring cities

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

AvrMinMax
Grassy Key86.5°F83.3°F90°F
Cocoa Plum Beach86.7°F83.3°F90.5°F
Key Colony Beach86.5°F83.3°F89.8°F
Murray Key87.3°F83.3°F92.1°F
Marathon Key86.7°F83.5°F90.7°F
Sombrero Beach86.5°F83.3°F90°F
Flamingo87.3°F83.3°F91.8°F
Rodriguez Key86.4°F82.6°F89.6°F
Molasses Reef86.4°F82.6°F89.4°F
Bahia Honda86.5°F83.3°F89.6°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Fiesta 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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