World Resorts Japan Weather

Sea water temperature in Japan

Sea water temperature
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January
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December

At this moment warmest sea in Japan was observed in the following locations: Okinawa, Nagasaki, Hakone.

You can find the full list of Japan marine locations in the table below. It shows current sea temperature values and averages for current and upcoming months.

Place name Current
sea temp
January 2025 February 2025
Okinawa 71.4°F 71.6°F 69.2°F
Nagasaki 61.5°F 60.3°F 57.1°F
Hakone 60.1°F 61.0°F 59.2°F
Atami 59.9°F 61.1°F 59.0°F
Kamakura 59.5°F 61.1°F 59.2°F
Hiroshima 57.7°F 56.1°F 51.7°F
Fukuoka 57.6°F 56.8°F 53.7°F
Yokohama 55.0°F 55.9°F 55.4°F
Nagoya 54.0°F 53.7°F 51.8°F
Osaka 53.2°F 51.1°F 47.8°F
Nara 53.1°F 51.1°F 48.0°F
Kobe 52.9°F 52.5°F 48.5°F
Kyoto 52.7°F 50.7°F 47.7°F
Tokyo 51.4°F 52.9°F 52.0°F
Noboribetsu 44.2°F 43.3°F 40.9°F
Sapporo 40.6°F 41.6°F 42.3°F

Charts below show average sea water temperature for Japan resorts with the warmest sea.

You can also check other months of the year to see sea temperature of Japan resorts at that time.

Places in Japan:
Name
°F
+50°F
+52°F
+50°F
+52°F
+61°F
+48°F
+50°F
+30°F
+68°F
+54°F
+28°F
+50°F
+55°F
+50°F
+54°F
Units of measurement: °C / °F