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Marquesas Keys Sea Temperature in January

Florida, United States

December Marquesas Keys year-round → February

Average sea temperature for Marquesas Keys, United States across January, based on 10 years of daily readings.

Average

22.05° C

High

24.68° C

Low

19.23° C

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

January is the 11th warmest of 12 months at Marquesas Keys. On average the water sits 4.5° than the year-round mean of 26.51° C.

Compared to December, January is 1.8° cooler than (23.82° C in December). By February the water is usually 21.94° C.

Marquesas Keys Day-by-Day Water Temperature in January

10-year low, average and high

18.0° C
19.9° C
21.8° C
23.6° C
25.5° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through January. Range Average

Each vertical bar above is one day of January. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Marquesas Keys.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

January Water Temperature Table for Marquesas Keys

10-year daily averages

Day Average Low High
January 1 23.05° C 21.56° C 24.59° C
January 2 22.99° C 21.59° C 24.68° C
January 3 23.03° C 21.72° C 24.58° C
January 4 23.08° C 21.69° C 24.63° C
January 5 22.94° C 21.57° C 24.21° C
January 6 22.74° C 21.37° C 24.1° C
January 7 22.7° C 21.2° C 24.35° C
January 8 22.55° C 21.19° C 24.19° C
January 9 22.47° C 20.83° C 24.23° C
January 10 22.36° C 20.62° C 24.35° C
January 11 22.35° C 20.5° C 24.32° C
January 12 22.34° C 20.46° C 24.22° C
January 13 22.32° C 20.87° C 24.08° C
January 14 22.27° C 21.03° C 23.96° C
January 15 22.05° C 20.58° C 23.79° C
January 16 21.94° C 20.56° C 23.75° C
January 17 21.92° C 20.58° C 23.51° C
January 18 21.8° C 20.25° C 23.22° C
January 19 21.82° C 20.24° C 22.91° C
January 20 21.78° C 19.66° C 22.87° C
January 21 21.69° C 19.64° C 23.01° C
January 22 21.61° C 19.71° C 22.96° C
January 23 21.53° C 20.04° C 22.83° C
January 24 21.42° C 19.57° C 22.47° C
January 25 21.35° C 19.41° C 22.36° C
January 26 21.41° C 19.23° C 22.62° C
January 27 21.46° C 19.25° C 22.96° C
January 28 21.46° C 19.35° C 22.83° C
January 29 21.29° C 19.44° C 22.49° C
January 30 20.95° C 19.55° C 22.15° C
January 31 20.97° C 19.75° C 22.37° C

Where January Sits in the Year

January highlighted

16.5° C
20.9° C
25.3° C
29.6° C
34.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
22.05° C
21.94° C
23.55° C
25.17° C
27.22° C
28.98° C
30.3° C
30.51° C
30.15° C
28.51° C
25.97° C
23.82° C
10-year monthly history for Marquesas Keys. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in January

Compare other United States water for the same month

Marquesas Keys Location

24.5754, -82.1033

24.57545, -82.10335 View on OpenStreetMap →

Marquesas Keys sits at 24.5754°N, 82.1033°W, on the coast of Florida, United States. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Marquesas Keys