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%
05.09
sat
sat
Day

70°F
S 4 mph
Precip.
48%
48%
Night

70°F
SW 2 mph
Precip.
70%
70%
06.09
sun
sun
Day

81°F
N 4 mph
Precip.
24%
24%
Night

72°F
SE 1 mph
Precip.
47%
47%
07.09
mon
mon
Day

82°F
N 7 mph
Precip.
14%
14%
Night

73°F
SE 1 mph
Precip.
39%
39%
08.09
tue
tue
Day

79°F
NW 6 mph
Precip.
59%
59%
Night

72°F
SW 4 mph
Precip.
42%
42%
09.09
wed
wed
Day

75°F
SW 7 mph
Precip.
45%
45%
Night

64°F
S 3 mph
Precip.
12%
12%
10.09
thu
thu
Day

81°F
N 5 mph
Precip.
3%
3%
Night

68°F
S 4 mph
Precip.
26%
26%
11.09
fri
fri
Day

84°F
NE 2 mph
Precip.
10%
10%
Night

72°F
S 4 mph
Precip.
25%
25%
sea water
temperature
temperature
| Hiroshima |
monthly
weather
weather
| Hiroshima |
current
weather
weather
| Hiroshima |
7 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


























