Water temperature of the Sea of Japan in july Where to swim in the Sea of Japan in july 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 july.
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 july.
The seasonal average for the water temperature in the month of july is between 58°F and 79°F. The lowest sea temperature measured this month is 52°F and the highest is 84°F.
The sea temperature map of the Sea of Japan in july
The map below presents a monthly average of the water temperature of the Sea of Japan for the month of july 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 july.
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWhere can you swim in the Sea of Japan in july?
Below, see the average temperatures measured in july in the different countries on the shores of the Sea of Japan.
South Korea
73°F to 78°F
pleasant swimmingJapan
63°F to 79°F
pleasant swimmingRussia
58°F to 64°F
cool 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: