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Saint Augustine South Sea Temperature in December

Florida, United States

November Saint Augustine South year-round → January

Average sea temperature for Saint Augustine South, United States across December, based on 10 years of daily readings.

Average

19.08° C

High

21.77° C

Low

16.38° C

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

December is the 9th warmest of 12 months at Saint Augustine South. On average the water sits 4.1° than the year-round mean of 23.15° C.

Compared to November, December is 3.5° cooler than (22.54° C in November). By January the water is usually 16.9° C.

Saint Augustine South Day-by-Day Water Temperature in December

10-year low, average and high

15.5° C
17.4° C
19.3° C
21.1° C
23.0° 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 Saint Augustine South.

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 Saint Augustine South

10-year daily averages

Day Average Low High
December 1 20.51° C 18.99° C 21.77° C
December 2 20.46° C 19.01° C 21.7° C
December 3 20.42° C 19.19° C 21.62° C
December 4 20.2° C 19.27° C 21.18° C
December 5 20.2° C 19.42° C 21.09° C
December 6 19.99° C 18.64° C 20.9° C
December 7 19.84° C 18.56° C 20.48° C
December 8 19.83° C 19° C 20.39° C
December 9 19.76° C 18.92° C 20.48° C
December 10 19.63° C 18.72° C 20.48° C
December 11 19.42° C 18.28° C 20.66° C
December 12 19.31° C 17.89° C 20.6° C
December 13 19.13° C 17.82° C 19.91° C
December 14 19.12° C 17.86° C 19.99° C
December 15 19.05° C 17.46° C 20.05° C
December 16 18.91° C 16.58° C 20.13° C
December 17 19.06° C 16.74° C 20.65° C
December 18 19.03° C 16.38° C 20.86° C
December 19 18.99° C 16.84° C 20.48° C
December 20 18.78° C 16.89° C 20.07° C
December 21 18.48° C 16.73° C 19.63° C
December 22 18.38° C 17.15° C 19.43° C
December 23 18.25° C 16.76° C 19.75° C
December 24 18.15° C 16.89° C 19.92° C
December 25 18.24° C 17.2° C 20.11° C
December 26 18.43° C 16.85° C 20.72° C
December 27 18.16° C 16.64° C 20.86° C
December 28 17.96° C 16.57° C 20.17° C
December 29 17.92° C 16.81° C 19.26° C
December 30 17.93° C 16.66° C 19.36° C
December 31 17.84° C 16.78° C 19.5° C

Where December Sits in the Year

December highlighted

9.5° C
15.4° C
21.3° C
27.1° C
33.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
16.9° C
16.65° C
18.3° C
21.42° C
24.55° C
26.89° C
28.37° C
28.62° C
28.37° C
26.06° C
22.54° C
19.08° C
10-year monthly history for Saint Augustine South. 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 United States water for the same month

Saint Augustine South Location

29.8469, -81.3152

29.84689, -81.31519 View on OpenStreetMap →

Saint Augustine South sits at 29.8469°N, 81.3152°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 Saint Augustine South