Japan
Japan offers a diverse range of sea water temperatures. At the moment, you can observe the warmest water temperatures along the shores of the cities Ishigaki (86.7°F), Niihama (86.0°F) and Kumamoto (85.8°F). In contrast, the city of Kushiro has the coldest water temperature in Japan, averaging around 68.2°F. This means the difference in water temperature between the warmest and coldest coastal cities is 18.5°F.
Destinations in Japan
The places with the warmest sea temperature