World Resorts Japan Hiroshima Weather

Hiroshima 14 Days Forecast

29.08
sat
Day
84°F
N 6 mph
Precip.
37%
Night
75°F
NE 1 mph
Precip.
51%
30.08
sun
Day
90°F
N 6 mph
Precip.
7%
Night
73°F
S 2 mph
Precip.
28%
31.08
mon
Day
90°F
N 4 mph
Precip.
17%
Night
73°F
S 2 mph
Precip.
32%
01.09
tue
Day
77°F
W 6 mph
Precip.
53%
Night
75°F
NW 2 mph
Precip.
78%
02.09
wed
Day
90°F
N 8 mph
Precip.
2%
Night
73°F
SW 4 mph
Precip.
13%
03.09
thu
Day
82°F
SW 5 mph
Precip.
18%
Night
72°F
SW 6 mph
Precip.
43%
04.09
fri
Day
73°F
N 3 mph
Precip.
73%
Night
73°F
SW 2 mph
Precip.
61%
05.09
sat
Day
70°F
S 4 mph
Precip.
48%
Night
70°F
SW 2 mph
Precip.
70%
06.09
sun
Day
81°F
N 4 mph
Precip.
24%
Night
72°F
SE 1 mph
Precip.
47%
07.09
mon
Day
82°F
N 7 mph
Precip.
14%
Night
73°F
SE 1 mph
Precip.
39%
08.09
tue
Day
79°F
NW 6 mph
Precip.
59%
Night
72°F
SW 4 mph
Precip.
42%
09.09
wed
Day
75°F
SW 7 mph
Precip.
45%
Night
64°F
S 3 mph
Precip.
12%
10.09
thu
Day
81°F
N 5 mph
Precip.
3%
Night
68°F
S 4 mph
Precip.
26%
11.09
fri
Day
84°F
NE 2 mph
Precip.
10%
Night
72°F
S 4 mph
Precip.
25%

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

Sunniest months:
May 16 days
October 15 days
April 14 days
Warmest months:
August 88.3 °F
July 85.7 °F
September 82.1 °F
Warmest sea temp:
August 81.3 °F
September 78.3 °F
July 77.7 °F
Coldest months:
January 46.3 °F
February 47.8 °F
December 49.7 °F
Rainiest months:
July 9 days
June 9 days
August 8 days
Windiest months:
December 5.9 mph
January 5.9 mph
February 5.6 mph

Hiroshima on a weather map

Hiroshima
+73°F
E 1 mph
Feels like: +79°F
Precip.: 66%
Places in Japan:
Name
°F
+72°F
+77°F
+77°F
+75°F
+77°F
+82°F
+77°F
+77°F
+81°F
+79°F
+55°F
+75°F
+77°F
+77°F
+73°F
24 Hours Forecast
Hiroshima
Local time: 07:27
August 29, saturday
0900
81°F
N
4 mph
1200
84°F
N
6 mph
1500
86°F
NE
7 mph
1800
79°F
N
3 mph
2100
75°F
NE
2 mph
August 30, sunday
0000
75°F
NE
1 mph
0300
73°F
E
1 mph
0600
73°F
E
1 mph
Units of measurement: °C / °F