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Sand Island Sea Temperature in January

Minor Outlying Islands, United States

December Sand Island year-round → February

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

Average

21.73° C

High

23.63° C

Low

19.97° 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 9th warmest of 12 months at Sand Island. On average the water sits 2.5° than the year-round mean of 24.25° C.

Compared to December, January is 1.3° cooler than (23.07° C in December). By February the water is usually 20.76° C.

Sand Island Day-by-Day Water Temperature in January

10-year low, average and high

19.0° C
20.4° C
21.8° C
23.1° C
24.5° 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 Sand Island.

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 Sand Island

10-year daily averages

Day Average Low High
January 1 22.37° C 21.15° C 23.45° C
January 2 22.36° C 21.13° C 23.49° C
January 3 22.33° C 21.03° C 23.44° C
January 4 22.34° C 21.09° C 23.47° C
January 5 22.34° C 21.1° C 23.43° C
January 6 22.3° C 21.19° C 23.53° C
January 7 22.24° C 21.3° C 23.63° C
January 8 22.12° C 21.18° C 23.5° C
January 9 22.09° C 21.1° C 23.44° C
January 10 22.08° C 21.03° C 23.56° C
January 11 21.99° C 20.75° C 23.23° C
January 12 21.95° C 20.59° C 23.35° C
January 13 21.87° C 20.51° C 23.34° C
January 14 21.68° C 20.41° C 23.1° C
January 15 21.65° C 20.35° C 22.99° C
January 16 21.6° C 20.23° C 22.79° C
January 17 21.59° C 20.18° C 22.72° C
January 18 21.54° C 20.07° C 22.51° C
January 19 21.48° C 20.08° C 22.34° C
January 20 21.41° C 20.22° C 21.97° C
January 21 21.34° C 20.34° C 21.81° C
January 22 21.38° C 20.43° C 22.13° C
January 23 21.33° C 20.41° C 22.24° C
January 24 21.31° C 20.45° C 22.41° C
January 25 21.32° C 20.46° C 22.74° C
January 26 21.37° C 20.46° C 23.12° C
January 27 21.35° C 20.42° C 23.16° C
January 28 21.28° C 20.34° C 23.02° C
January 29 21.24° C 20.19° C 22.88° C
January 30 21.23° C 20.04° C 22.75° C
January 31 21.26° C 19.97° C 22.82° C

Where January Sits in the Year

January highlighted

17.5° C
20.9° C
24.3° C
27.6° C
31.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
21.73° C
20.76° C
20.81° C
21.34° C
22.81° C
25.77° C
26.9° C
27.75° C
28.11° C
26.93° C
24.98° C
23.07° C
10-year monthly history for Sand Island. 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

Sand Island Location

28.2167, -177.3667

28.21670, -177.36670 View on OpenStreetMap →

Sand Island sits at 28.2167°N, 177.3667°W, on the coast of Minor Outlying Islands, 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 Sand Island