Casey Key Sea Temperature in December

Looking to find out what the average sea water temperature in Casey Key is for December? Find out what the lowest, highest, and average water temperatures are for Casey Key over the past 10 years.

Average water temperature in Casey Key for December

The average, high, and low temperatures below should help you if you can swim in the water in Casey Key in December.

21.49° C

(70.68° F)

  • highest: 23.98° C (75.16° F)
  • lowest: 17.84° C (64.11° F)

Water at this temperature is very pleasant to swim in and if you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Water temperature range by day in December in Casey Key

The chart below shows the range of low and high temperatures by day for the month of December in Casey Key.

Water temperatures for December in Casey Key in recent years

Day 2024 2023 2022 2021
1 0° C 22.37° C 23.98° C 21.24° C
2 0° C 22.49° C 23.64° C 21.12° C
3 0° C 23.16° C 23.4° C 21.07° C
4 0° C 23.37° C 23.3° C 21.11° C
5 0° C 23.36° C 23.45° C 21.27° C
6 0° C 22.95° C 23.63° C 21.48° C
7 0° C 22.37° C 23.71° C 21.47° C
8 0° C 21.97° C 23.69° C 21.6° C
9 0° C 21.73° C 23.54° C 21.94° C
10 0° C 21.67° C 23.34° C 22.2° C
11 0° C 21.77° C 23.16° C 22.52° C
12 0° C 21.98° C 23.18° C 22.74° C
13 0° C 21.36° C 23.25° C 22.85° C
14 0° C 20.79° C 23.27° C 22.83° C
15 0° C 20.76° C 23.21° C 22.75° C
16 0° C 20.66° C 23.14° C 22.55° C
17 0° C 20.47° C 22.79° C 22.61° C
18 0° C 20.25° C 22.44° C 22.94° C
19 0° C 19.97° C 22.14° C 23.25° C
20 0° C 19.06° C 21.92° C 23.23° C
21 0° C 19.12° C 21.6° C 23.12° C
22 0° C 19° C 21.38° C 22.8° C
23 0° C 18.77° C 21.2° C 22.43° C
24 0° C 18.73° C 20.98° C 22.14° C
25 0° C 19.32° C 20.95° C 21.95° C
26 0° C 19.86° C 19.24° C 21.9° C
27 0° C 19.72° C 18.62° C 21.87° C
28 0° C 19.76° C 18.14° C 21.84° C
29 0° C 19.69° C 17.84° C 21.85° C
30 0° C 19.57° C 17.93° C 21.95° C
31 0° C 19.18° C 18.76° C 22.18° C

Water temperature in December for locations near Casey Key

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Casey Key comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

  • "Casey Key Sea Temperature in December". SeaTemperatures.net. Accessed on May 2, 2024. http://seatemperatures.net/north-america/united-states/casey-key-december-temperature/.

  • "Casey Key Sea Temperature in December". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/casey-key-december-temperature/. Accessed 2 May, 2024

  • Casey Key Sea Temperature in December. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/casey-key-december-temperature/.