Current sea water temperature:
+78.8°F
| Minimum sea water temperature in September: | 85.3°F |
| Maximum sea water temperature in September: | 74.3°F |
| Average sea water temperature in September: | 78.4°F |
| more information | |
14 days
forecast
forecast
| Hiroshima |
monthly
weather
weather
| Hiroshima |
Sea water temperature for the last 10 days:
| September 15 | 78.8°F | September 10 | 79.0°F |
| September 14 | 79.0°F | September 9 | 80.1°F |
| September 13 | 78.4°F | September 8 | 80.6°F |
| September 12 | 77.7°F | September 7 | 80.8°F |
| September 11 | 78.3°F | September 6 | 81.5°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 82.7°F. The highest and lowest sea temperatures during the month were 85.1°F and 78.6°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 80.5°F. The highest and lowest sea temperatures during the month were 83.1°F and 77.7°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 79.5°F. The highest and lowest sea temperatures during the month were 85.3°F and 71.4°F.
current
weather
weather
| Hiroshima |
weather in
September
September
| Hiroshima |
Best time for vacation in Hiroshima
Hiroshima on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hiroshima
Local time: 20:15
September 15, tuesday
2100
68°F
S
4 mph
4 mph
September 16, wednesday
0000
66°F
S
4 mph
4 mph
0300
66°F
S
4 mph
4 mph
0600
66°F
S
5 mph
5 mph
0900
70°F
SW
4 mph
4 mph
1200
73°F
NW
2 mph
2 mph
1500
72°F
SW
4 mph
4 mph
1800
70°F
SW
5 mph
5 mph
