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Cayman Brac Sea Temperature in December

Cayman Islands

November Cayman Brac year-round → January

Average sea temperature for Cayman Brac, Cayman Islands across December, based on 10 years of daily readings.

Average

28.09° C

High

28.95° C

Low

27.03° C

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

December is the 8th warmest of 12 months at Cayman Brac. On average the water sits 0.6° than the year-round mean of 28.71° C.

Compared to November, December is 0.8° cooler than (28.9° C in November). By January the water is usually 27.39° C.

Cayman Brac Day-by-Day Water Temperature in December

10-year low, average and high

26.5° C
27.3° C
28.0° C
28.8° C
29.5° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through December. Range Average

Each vertical bar above is one day of December. 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 Cayman Brac.

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.

December Water Temperature Table for Cayman Brac

10-year daily averages

Day Average Low High
December 1 28.45° C 27.75° C 28.88° C
December 2 28.44° C 27.9° C 28.9° C
December 3 28.43° C 27.87° C 28.93° C
December 4 28.4° C 27.85° C 28.93° C
December 5 28.38° C 27.73° C 28.91° C
December 6 28.4° C 27.8° C 28.95° C
December 7 28.37° C 27.81° C 28.87° C
December 8 28.35° C 27.83° C 28.84° C
December 9 28.29° C 27.92° C 28.81° C
December 10 28.26° C 27.94° C 28.77° C
December 11 28.29° C 27.9° C 28.83° C
December 12 28.23° C 27.83° C 28.79° C
December 13 28.19° C 27.81° C 28.76° C
December 14 28.14° C 27.78° C 28.7° C
December 15 28.12° C 27.75° C 28.58° C
December 16 28.02° C 27.51° C 28.56° C
December 17 28.04° C 27.4° C 28.54° C
December 18 28.1° C 27.74° C 28.66° C
December 19 28.07° C 27.59° C 28.58° C
December 20 28.04° C 27.44° C 28.62° C
December 21 27.99° C 27.44° C 28.53° C
December 22 27.99° C 27.5° C 28.55° C
December 23 27.94° C 27.46° C 28.64° C
December 24 27.82° C 27.41° C 28.36° C
December 25 27.77° C 27.29° C 28.22° C
December 26 27.74° C 27.26° C 28.18° C
December 27 27.73° C 27.13° C 28.2° C
December 28 27.73° C 27.09° C 28.39° C
December 29 27.72° C 27.09° C 28.36° C
December 30 27.68° C 27.03° C 28.21° C
December 31 27.63° C 27.09° C 28.16° C

Where December Sits in the Year

December highlighted

25.0° C
26.9° C
28.8° C
30.6° C
32.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
27.39° C
27.08° C
27.2° C
27.7° C
28.71° C
29.13° C
29.9° C
30.23° C
30.28° C
29.84° C
28.9° C
28.09° C
10-year monthly history for Cayman Brac. 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 December

Compare other Cayman Islands water for the same month

Cayman Brac Location

19.7235, -79.8017

19.72353, -79.80166 View on OpenStreetMap →

Cayman Brac sits at 19.7235°N, 79.8017°W, on the coast of Cayman Islands. 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 Cayman Brac