World sea water temperatures

Water temperature in Long Key (FL) in December

Is it warm enough to swim in Long Key in December? Average water temperature in Long Key in December is 77.7°F and therefore suitable for comfortable swimming. The warmest sea in Long Key in December is 81.1°F, and the coldest is 73.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Long Key

Changes water temperature in Long Key in December 2024, 2023

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

You can choose any other years:

Year 1:   Year 2:


Day 2024 2023 Min Max
December 179.2°F80.8°F76.6°F81.1°F
December 279.3°F80.2°F76.6°F81.1°F
December 379.5°F80.4°F76.6°F81.1°F
December 479.2°F80.1°F75.6°F80.6°F
December 578.6°F80.1°F76.6°F80.6°F
December 678.6°F79.7°F76.1°F80.8°F
December 778.4°F79.5°F75.7°F80.4°F
December 878.3°F79.2°F75.9°F80.1°F
December 977.7°F79.2°F75.4°F79.9°F
December 1077.9°F78.6°F75.9°F79.7°F
December 1178.1°F79°F75.9°F79.7°F
December 1277°F78.6°F75.7°F79.5°F
December 1375.9°F78.3°F75.4°F80.6°F
December 1475.7°F79.3°F75.6°F79.7°F
December 1577.4°F79°F76.1°F79.5°F
Day 2024 2023 Min Max
December 1677.9°F78.3°F74.8°F79.9°F
December 1778.4°F79°F74.1°F79.3°F
December 1877.9°F78.3°F73.4°F79.3°F
December 1978.3°F78.6°F73.9°F80.1°F
December 2078.3°F78.1°F73.8°F79.7°F
December 2177.7°F77.5°F74.1°F79.7°F
December 2276.8°F77.7°F74.1°F79.5°F
December 2375.2°F77.5°F74.1°F79.5°F
December 2473.9°F77°F73.2°F79.3°F
December 2573.9°F76.8°F73.4°F79.2°F
December 2675.7°F76.8°F73.8°F78.8°F
December 2775.7°F77.5°F73.6°F78.8°F
December 2877°F76.6°F73.4°F79.2°F
December 2977°F76.6°F73.4°F79.3°F
December 3078.6°F76.5°F73.8°F79.5°F
December 3178.6°F76.3°F73.8°F79.7°F
Long Key water temp chart in December

Average water temperature in Long Key in December over a decade

20152016201720182019
79°F79.2°F78.1°F78.3°F78.3°F
20202021202220232024
77.5°F79°F79.2°F78.4°F77.4°F

Long Key sea state in December

Chart comparing the height of waves in Long Key in December 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 Long Key in December

Long 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 December?

Want to know where the water temperature in December 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 December. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Fiesta Key77.4°F72.9°F81°F
Grassy Key77.5°F73°F81°F
Vaca Key77°F72.7°F80.8°F
Cocoa Plum Beach77°F72.7°F80.8°F
Key Colony Beach77.7°F73°F81°F
Sombrero Beach77.4°F72.9°F81°F
Murray Key74.7°F63.9°F80.6°F
Flamingo74.5°F63.7°F80.4°F
Rodriguez Key77.9°F73.8°F81°F
Bahia Honda77.5°F72.5°F81.1°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 Long 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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