World Resorts Japan Hiroshima Weather

Hiroshima Sea Temperature in December

Average sea water temperature in December:
+60.9°F
Minimum sea water temperature in December: 65.8°F
Maximum sea water temperature in December: 55.9°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 62.0°F. The highest and lowest sea temperatures during the month were 64.8°F and 59.7°F.

Monthly sea water temperature in Hiroshima, °F

Which Japan resorts have warmest sea in December?

Place name December 2025 December 2024
Okinawa 75.6°F 75.3°F
Nagasaki 67.3°F 64.1°F
Atami 66.3°F 65.8°F
Hakone 65.9°F 65.7°F
Kamakura 65.8°F 65.1°F
Fukuoka 62.8°F 62.2°F
Hiroshima 62.0°F 61.6°F
Kobe 60.8°F 60.1°F
Yokohama 60.6°F 60.4°F
Nagoya 59.7°F 60.7°F
Osaka 59.7°F 58.7°F
Nara 59.3°F 58.2°F
Tokyo 58.6°F 58.4°F
Kyoto 57.6°F 56.4°F
Noboribetsu 49.9°F 50.2°F
Sapporo 45.2°F 45.2°F

Best time for vacation in Hiroshima

Sunniest months:
May 16 days
October 15 days
April 14 days
Warmest months:
August 88.4 °F
July 85.8 °F
September 82.1 °F
Warmest sea temp:
August 81.2 °F
September 78.3 °F
July 77.6 °F
Coldest months:
January 46.3 °F
February 47.6 °F
December 49.6 °F
Rainiest months:
June 10 days
July 9 days
August 8 days
Windiest months:
December 5.9 mph
January 5.7 mph
February 5.6 mph

Hiroshima on a weather map

Hiroshima
+45°F
W 2 mph
Feels like: +45°F
Precip.: 0%
Places in Japan:
Name
°F
+52°F
+52°F
+50°F
+54°F
+57°F
+54°F
+50°F
+34°F
+70°F
+54°F
+25°F
+50°F
+54°F
+46°F
+45°F
24 Hours Forecast
Hiroshima
Local time: 18:08
December 23, tuesday
2100
43°F
SW
4 mph
December 24, wednesday
0000
45°F
SW
2 mph
0300
45°F
W
2 mph
0600
46°F
SW
1 mph
0900
46°F
SW
3 mph
1200
50°F
SW
5 mph
1500
50°F
SW
2 mph
1800
50°F
SW
4 mph
Units of measurement: °C / °F