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Simanari Sea Temperature in December

Sumatra Utara, Indonesia

November Simanari year-round → January

Average sea temperature for Simanari, Indonesia across December, based on 10 years of daily readings.

Average

29.13° C

High

30.18° C

Low

27.68° 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 11th warmest of 12 months at Simanari. On average the water sits 0.6° than the year-round mean of 29.75° C.

Compared to November, December is 0.2° about the same as (28.96° C in November). By January the water is usually 29.49° C.

Simanari Day-by-Day Water Temperature in December

10-year low, average and high

27.0° C
28.0° C
29.0° C
30.0° C
31.0° 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 Simanari.

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 Simanari

10-year daily averages

Day Average Low High
December 1 28.97° C 27.85° C 29.81° C
December 2 28.97° C 27.91° C 29.85° C
December 3 29.01° C 27.87° C 29.62° C
December 4 29.08° C 27.88° C 29.74° C
December 5 29.11° C 27.89° C 29.7° C
December 6 29.15° C 27.98° C 29.62° C
December 7 29.08° C 27.91° C 29.57° C
December 8 29.12° C 27.89° C 29.62° C
December 9 29.03° C 27.97° C 29.52° C
December 10 28.92° C 27.77° C 29.41° C
December 11 28.93° C 27.69° C 29.5° C
December 12 28.88° C 27.68° C 29.38° C
December 13 28.91° C 27.69° C 29.42° C
December 14 29.02° C 28.11° C 29.34° C
December 15 29.08° C 28.16° C 29.45° C
December 16 29.05° C 28.21° C 29.66° C
December 17 28.99° C 28.08° C 29.68° C
December 18 29.02° C 28.13° C 29.75° C
December 19 29.07° C 28.27° C 29.56° C
December 20 29.12° C 28.22° C 29.49° C
December 21 29.12° C 28.24° C 29.48° C
December 22 29.28° C 28.49° C 29.77° C
December 23 29.38° C 28.76° C 30.18° C
December 24 29.33° C 28.8° C 29.96° C
December 25 29.3° C 28.7° C 29.62° C
December 26 29.4° C 28.97° C 29.81° C
December 27 29.4° C 28.89° C 29.79° C
December 28 29.32° C 28.66° C 29.66° C
December 29 29.39° C 28.65° C 29.89° C
December 30 29.3° C 28.47° C 29.71° C
December 31 29.39° C 28.67° C 29.69° C

Where December Sits in the Year

December highlighted

26.5° C
28.1° C
29.8° C
31.4° C
33.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
29.49° C
29.8° C
29.94° C
30.24° C
30.21° C
30.12° C
30.14° C
29.86° C
29.72° C
29.33° C
28.96° C
29.13° C
10-year monthly history for Simanari. 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 Indonesia water for the same month

Simanari Location

1.4167, 97.2167

1.41670, 97.21670 View on OpenStreetMap →

Simanari sits at 1.4167°N, 97.2167°E, on the coast of Sumatra Utara, Indonesia. 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 Simanari