Water temperature of the Sea of Japan in january Where to swim in the Sea of Japan in january 2025?
Several countries border the seaside of the Sea of Japan, including: South Korea, Japan and Russia. We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of january.
Several countries border the seaside of the Sea of Japan, including: South Korea, Japan and Russia.
We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of january.
The seasonal average for the water temperature in the month of january is between 33°F and 62°F. The lowest sea temperature measured this month is 29°F and the highest is 65°F.
The sea temperature map of the Sea of Japan in january
The map below presents a monthly average of the water temperature of the Sea of Japan for the month of january for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see sea temperature details by city in january.
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWhere can you swim in the Sea of Japan in january?
Below, see the average temperatures measured in january in the different countries on the shores of the Sea of Japan.
South Korea
49°F to 61°F
cold swimmingJapan
38°F to 62°F
cold swimmingRussia
33°F to 35°F
freezing swimmingWater temperature of the Sea of Japan: choose another month
See monthly seasonal averages of the water temperature of the Sea of Japan by clicking on the links below: