World Resorts Japan Weather

Sea water temperature in Japan

Sea water temperature
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January
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April
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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 72.1°F 71.6°F 69.2°F
Nagasaki 62.6°F 60.3°F 57.1°F
Hakone 61.7°F 61.0°F 59.2°F
Atami 61.5°F 61.1°F 59.0°F
Kamakura 60.6°F 61.1°F 59.2°F
Fukuoka 59.2°F 56.8°F 53.7°F
Hiroshima 57.7°F 56.1°F 51.7°F
Nagoya 55.8°F 53.7°F 51.8°F
Yokohama 55.4°F 55.9°F 55.4°F
Kobe 55.4°F 52.5°F 48.5°F
Osaka 54.7°F 51.1°F 47.8°F
Nara 54.3°F 51.1°F 48.0°F
Tokyo 53.4°F 52.9°F 52.0°F
Kyoto 53.2°F 50.7°F 47.7°F
Noboribetsu 45.1°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
+54°F
+54°F
+48°F
+59°F
+48°F
+52°F
+36°F
+64°F
+50°F
+34°F
+52°F
+57°F
+52°F
+50°F
Units of measurement: °C / °F