Water temperature in Shell Key (FL) in December
Is it warm enough to swim in Shell Key in December? Average water temperature in Shell Key in December is 67.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Shell Key in December is 73.6°F, and the coldest is 58.6°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 December 2024, 2023
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 December.
You can choose any other years:
| Day |
2024 |
2023 |
Min |
Max |
| December 1 | 66.4°F | 67.6°F | 66.4°F | 71.1°F |
| December 2 | 66.4°F | 68.5°F | 66.4°F | 72.1°F |
| December 3 | 63.5°F | 69.1°F | 63.5°F | 72.7°F |
| December 4 | 62.8°F | 70.2°F | 62.8°F | 72.3°F |
| December 5 | 62.4°F | 70°F | 62.4°F | 72.1°F |
| December 6 | 62.6°F | 68.7°F | 62.6°F | 72.1°F |
| December 7 | 62.8°F | 68.5°F | 62.8°F | 72.9°F |
| December 8 | 62.2°F | 67.5°F | 62.2°F | 72.9°F |
| December 9 | 63.3°F | 68.4°F | 63.3°F | 73°F |
| December 10 | 63.7°F | 67.8°F | 63.7°F | 73.6°F |
| December 11 | 64.2°F | 66.2°F | 64.2°F | 71.1°F |
| December 12 | 62.4°F | 66.9°F | 62.4°F | 73.4°F |
| December 13 | 61.7°F | 66°F | 61.7°F | 71.6°F |
| December 14 | 61.2°F | 66°F | 61.2°F | 72.1°F |
| December 15 | 63°F | 65.8°F | 63°F | 72.1°F |
| Day |
2024 |
2023 |
Min |
Max |
| December 16 | 63.9°F | 65.5°F | 63.9°F | 72.5°F |
| December 17 | 64.8°F | 64.6°F | 64.6°F | 72.9°F |
| December 18 | 65.3°F | 64.4°F | 64.4°F | 69.1°F |
| December 19 | 65.8°F | 63.7°F | 63°F | 72.9°F |
| December 20 | 66°F | 63.5°F | 63.5°F | 69.3°F |
| December 21 | 66°F | 62.6°F | 62.6°F | 69.4°F |
| December 22 | 64°F | 62.2°F | 62.2°F | 70.2°F |
| December 23 | 62.8°F | 61.9°F | 61.9°F | 66.4°F |
| December 24 | 63.7°F | 60.4°F | 60.4°F | 69.8°F |
| December 25 | 63.3°F | 61.2°F | 61.2°F | 69.8°F |
| December 26 | 63.5°F | 63.7°F | 62.1°F | 71.2°F |
| December 27 | 64.6°F | 63.7°F | 59.7°F | 70.5°F |
| December 28 | 65.3°F | 64.2°F | 60.6°F | 70.5°F |
| December 29 | 67.3°F | 63.5°F | 58.6°F | 70.5°F |
| December 30 | 66.9°F | 62.8°F | 59.7°F | 70.9°F |
| December 31 | 68°F | 62.2°F | 62.2°F | 72.9°F |
Average water temperature in Shell Key in December over a decade
| 2015 | 2016 | 2017 | 2018 | 2019 |
| 71.4°F | 69.4°F | 69.4°F | 65.7°F | 68°F |
| 2020 | 2021 | 2022 | 2023 | 2024 |
| 65.3°F | 69.4°F | 68.5°F | 65.3°F | 64.2°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
