The water temperature right now is at least 36°F and at most 67°F.
The seasonal average water temperature is between 36°F and 66°F (see water temperatures of the Sea of Japan in december).
The map of water temperatures of the Sea of Japan in real time
The map below shows today's water temperature of the Sea of Japan for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see details by city.
Where can I swim in the Sea of Japan today?
Find below today's temperature in the various countries on the shores of the Sea of Japan. Temperatures are measured on the coast, so these are swimming temperatures.
Water temperature of the Sea of Japan: by month
See monthly seasonal averages of the water temperature of the Sea of Japan by clicking on the links below: