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Water temperature in Key Biscayne (FL) in October

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Is it warm enough to swim in Key Biscayne in October? Average water temperature in Key Biscayne in October is 83.1°F and therefore suitable for comfortable swimming. The warmest sea in Key Biscayne in October is 86.2°F, and the coldest is 79°F. Average high air temperature in Key Biscayne in October is 84°F, and average low temperature is 73°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Key Biscayne

Changes water temperature in Key Biscayne in October 2024, 2023

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

You can choose any other years:

Year 1:   Year 2:


Day 2024 2023 Min Max
October 186.2°F86.2°F83.1°F86.2°F
October 286°F85.5°F82.9°F86°F
October 386°F85.8°F82.9°F86°F
October 486.2°F85.1°F82.8°F86.2°F
October 586.2°F84.9°F82.8°F86.2°F
October 685.8°F85.5°F82.4°F85.8°F
October 784.9°F85.5°F81.9°F85.5°F
October 884.9°F85.8°F81.5°F85.8°F
October 984.4°F85.6°F81.3°F85.6°F
October 1084.4°F85.5°F82°F85.5°F
October 1183.8°F85.3°F82.8°F86°F
October 1283.7°F85.8°F82.8°F85.8°F
October 1383.5°F85.5°F82.4°F85.5°F
October 1483.5°F85.5°F82°F85.5°F
October 1583.7°F84.9°F81.9°F84.9°F
Day 2024 2023 Min Max
October 1683.1°F84.9°F81.7°F85.1°F
October 1783.1°F84.2°F81.5°F84.2°F
October 1882.9°F83.7°F81.7°F84.2°F
October 1983.1°F84°F81.7°F84.4°F
October 2082.9°F82.9°F81°F84.7°F
October 2182.9°F83.3°F80.4°F84.7°F
October 2282.2°F82.4°F80.6°F84°F
October 2382.4°F82.2°F81.1°F84.2°F
October 2482.4°F82.2°F81°F84.4°F
October 2582°F82.9°F80.6°F84.6°F
October 2682.4°F82.4°F80.4°F83.5°F
October 2782°F81.3°F80.4°F83.7°F
October 2882.4°F81.3°F80.2°F84°F
October 2981.9°F80.2°F80.1°F83.8°F
October 3080.6°F81°F79.5°F84.2°F
October 3181°F82.2°F79°F84.4°F
Key Biscayne water temp chart in October

Average water temperature in Key Biscayne in October over a decade

20152016201720182019
83.1°F82.8°F83.5°F83.5°F83.7°F
20202021202220232024
84.4°F83.8°F82.8°F84°F83.5°F

Key Biscayne sea state in October

Chart comparing the height of waves in Key Biscayne in October 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 Key Biscayne in October

Weather and climate in Key Biscayne in October

This data display average monthly climate indicators in Key Biscayne in October based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature84°F
  • Average LOW temperature73°F
  • Average rainfall days12 days
  • Average rainfall152mm/6''

Key Biscayne 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 October?

Want to know where the water temperature in October 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

Best Beach Resorts in Florida in October

Places with the warmest average sea water temperature in Florida in October. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Sarasota80.8°F72.7°F86.9°F
Key West83.3°F78.6°F86.9°F
Naples81.7°F74.5°F86.9°F
Miami Beach83.3°F79.3°F86.4°F
Fort Myers Beach81.3°F73.9°F86.7°F
Destin78.4°F72.9°F84.7°F
Fort Lauderdale83.3°F79.7°F86.4°F
Key Largo83.1°F77.4°F86.4°F
Cocoa Beach80.2°F73.4°F85.1°F
Clearwater Beach79.7°F68.9°F86.7°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 Key Biscayne 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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