Current sea water temperature:
+59.9°F
| Minimum sea water temperature in December: | 65.8°F |
| Maximum sea water temperature in December: | 55.9°F |
| Average sea water temperature in December: | 60.9°F |
| more information | |
14 days
forecast
forecast
| Hiroshima |
monthly
weather
weather
| Hiroshima |
Sea water temperature for the last 10 days:
| December 22 | 59.9°F | December 17 | 59.9°F |
| December 21 | 59.7°F | December 16 | 59.9°F |
| December 20 | 59.9°F | December 15 | 61.3°F |
| December 19 | 59.9°F | December 14 | 61.5°F |
| December 18 | 60.1°F | December 13 | 61.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Hiroshima?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hiroshima was noticed in August, September and July.
Monthly Sea Temperatures in Hiroshima, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 83.2°F. The highest and lowest sea temperatures during the month were 84.9°F and 80.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 81.4°F. The highest and lowest sea temperatures during the month were 84.7°F and 77.5°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 81.6°F. The highest and lowest sea temperatures during the month were 84.4°F and 78.8°F.
current
weather
weather
| Hiroshima |
weather in
December
December
| Hiroshima |
Best time for vacation in Hiroshima
Hiroshima on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hiroshima
Local time: 19:24
December 22, monday
2100
39°F
SW
7 mph
7 mph
December 23, tuesday
0000
37°F
SW
7 mph
7 mph
0300
36°F
SW
6 mph
6 mph
0600
36°F
SW
5 mph
5 mph
0900
43°F
SW
3 mph
3 mph
1200
48°F
NW
2 mph
2 mph
1500
50°F
N
2 mph
2 mph
1800
45°F
NW
1 mph
1 mph
