29.08
sat
sat
Day
84°F
N 6 mph
Precip.
37%
37%
Night
75°F
NE 1 mph
Precip.
51%
51%
30.08
sun
sun
Day
90°F
N 6 mph
Precip.
7%
7%
Night
73°F
S 2 mph
Precip.
28%
28%
31.08
mon
mon
Day
90°F
N 4 mph
Precip.
17%
17%
Night
73°F
S 2 mph
Precip.
32%
32%
01.09
tue
tue
Day
77°F
W 6 mph
Precip.
53%
53%
Night
75°F
NW 2 mph
Precip.
78%
78%
02.09
wed
wed
Day
90°F
N 8 mph
Precip.
2%
2%
Night
73°F
SW 4 mph
Precip.
13%
13%
03.09
thu
thu
Day
82°F
SW 5 mph
Precip.
18%
18%
Night
72°F
SW 6 mph
Precip.
43%
43%
04.09
fri
fri
Day
73°F
N 3 mph
Precip.
73%
73%
Night
73°F
SW 2 mph
Precip.
61%
61%
sea water
temperature
temperature
| Hiroshima |
monthly
weather
weather
| Hiroshima |
current
weather
weather
| Hiroshima |
14 days
forecast
forecast
| Hiroshima |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 82.6°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:
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.
Air temperature in Hiroshima, °F
Precipitation total in Hiroshima, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hiroshima
Hiroshima on a weather map
Places in Japan:
Name
°F
24 Hours Forecast
Hiroshima
Local time: 07:27
August 29, saturday
0900
81°F
N
4 mph
4 mph
1200
84°F
N
6 mph
6 mph
1500
86°F
NE
7 mph
7 mph
1800
79°F
N
3 mph
3 mph
2100
75°F
NE
2 mph
2 mph
August 30, sunday
0000
75°F
NE
1 mph
1 mph
0300
73°F
E
1 mph
1 mph
0600
73°F
E
1 mph
1 mph
