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Aonae Sea Temperature in January

Hokkaido, Japan

December Aonae year-round → February

Average sea temperature for Aonae, Japan across January, based on 10 years of daily readings.

Average

9.87° C

High

13.02° C

Low

7.06° C

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

January is the 9th warmest of 12 months at Aonae. On average the water sits 4.9° than the year-round mean of 14.81° C.

Compared to December, January is 1.7° cooler than (11.57° C in December). By February the water is usually 8.8° C.

Aonae Day-by-Day Water Temperature in January

10-year low, average and high

6.0° C
8.0° C
10.0° C
12.0° C
14.0° 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 Aonae.

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 Aonae

10-year daily averages

Day Average Low High
January 1 10.25° C 7.9° C 13.02° C
January 2 10.14° C 7.28° C 12.83° C
January 3 9.94° C 7.06° C 12.38° C
January 4 9.94° C 7.14° C 12.41° C
January 5 9.85° C 7.08° C 12.36° C
January 6 9.86° C 7.31° C 12.43° C
January 7 9.86° C 7.38° C 12.48° C
January 8 9.93° C 7.79° C 12.48° C
January 9 9.88° C 7.71° C 12.3° C
January 10 9.79° C 7.79° C 11.97° C
January 11 9.73° C 7.7° C 11.99° C
January 12 9.67° C 7.46° C 11.9° C
January 13 9.73° C 7.85° C 11.87° C
January 14 9.8° C 8.14° C 11.76° C
January 15 9.78° C 8.08° C 11.63° C
January 16 9.77° C 7.93° C 11.56° C
January 17 9.74° C 8.23° C 11.36° C
January 18 9.95° C 8.1° C 11.4° C
January 19 10.15° C 7.8° C 11.44° C
January 20 10.29° C 7.77° C 11.45° C
January 21 10.51° C 8.06° C 11.59° C
January 22 10.22° C 8.36° C 11.53° C
January 23 10.18° C 8.91° C 11.55° C
January 24 10.15° C 9.04° C 11.27° C
January 25 9.87° C 7.9° C 11.15° C
January 26 9.74° C 8.54° C 11.12° C
January 27 9.64° C 8.04° C 11.08° C
January 28 9.51° C 7.78° C 10.83° C
January 29 9.4° C 7.73° C 10.91° C
January 30 9.34° C 7.64° C 10.82° C
January 31 9.21° C 7.57° C 10.78° C

Where January Sits in the Year

January highlighted

2.5° C
9.3° C
16.0° C
22.8° C
29.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
9.87° C
8.8° C
8.54° C
9.51° C
12.08° C
16.42° C
20.98° C
23.68° C
23.24° C
19° C
13.99° C
11.57° C
10-year monthly history for Aonae. 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 Japan water for the same month

Aonae Location

42.0500, 139.4500

42.05000, 139.45000 View on OpenStreetMap →

Aonae sits at 42.0500°N, 139.4500°E, on the coast of Hokkaido, Japan. 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 Aonae