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Mornington Island Sea Temperature in December

Queensland, Australia

November Mornington Island year-round → January

Average sea temperature for Mornington Island, Australia across December, based on 10 years of daily readings.

Average

31.06° C

High

32.4° C

Low

28.45° C

Water at this temperature is very warm and you should look to bathe only. Avoid any kind of strenuous swimming as there is a real risk of heat stroke at this temperature.

December is the 2nd warmest of 12 months at Mornington Island. On average the water sits 3.5° than the year-round mean of 27.52° C.

Compared to November, December is 1.1° warmer than (29.95° C in November). By January the water is usually 31.13° C.

Mornington Island Day-by-Day Water Temperature in December

10-year low, average and high

27.5° C
28.9° C
30.3° C
31.6° C
33.0° 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 Mornington 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.

December Water Temperature Table for Mornington Island

10-year daily averages

Day Average Low High
December 1 30.62° C 30.04° C 31.24° C
December 2 30.57° C 30.02° C 30.95° C
December 3 30.67° C 30.17° C 31.18° C
December 4 30.7° C 30.27° C 31.37° C
December 5 30.79° C 30.33° C 31.41° C
December 6 30.82° C 30.41° C 31.44° C
December 7 30.94° C 30.64° C 31.68° C
December 8 31.07° C 30.76° C 31.98° C
December 9 31.26° C 30.77° C 32.21° C
December 10 31.38° C 30.86° C 32.28° C
December 11 31.35° C 30.94° C 32.06° C
December 12 31.32° C 30.98° C 32° C
December 13 31.33° C 30.9° C 31.96° C
December 14 31.39° C 30.78° C 31.92° C
December 15 31.36° C 30.71° C 31.88° C
December 16 31.34° C 30.87° C 31.84° C
December 17 31.31° C 30.85° C 31.8° C
December 18 31.21° C 30.39° C 31.75° C
December 19 31.11° C 30.28° C 31.65° C
December 20 31.05° C 30° C 31.7° C
December 21 31.02° C 29.49° C 31.84° C
December 22 31.15° C 29.81° C 32.11° C
December 23 31.21° C 29.84° C 32.4° C
December 24 31.08° C 29.39° C 32.25° C
December 25 31° C 29.2° C 32.08° C
December 26 30.84° C 28.73° C 32.02° C
December 27 30.86° C 28.67° C 32.19° C
December 28 30.93° C 28.45° C 32.3° C
December 29 30.97° C 29.04° C 32.21° C
December 30 31.1° C 29.35° C 32.2° C
December 31 31.11° C 29.27° C 32.37° C

Where December Sits in the Year

December highlighted

17.0° C
21.4° C
25.8° C
30.1° C
34.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
31.13° C
30.75° C
30.62° C
29.22° C
25.92° C
22.95° C
21.61° C
22.82° C
25.59° C
28.61° C
29.95° C
31.06° C
10-year monthly history for Mornington 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 December

Compare other Australia water for the same month

Mornington Island Location

-16.6667, 139.1667

-16.66670, 139.16670 View on OpenStreetMap →

Mornington Island sits at -16.6667°N, 139.1667°E, on the coast of Queensland, Australia. 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 Mornington Island