Measurements:
°C
°F
CURRENT WEATHER
14:25
Hiroshima
70°F
W 1 mph
Feels like: 70°F
Precip: 100%
World Resorts Japan Hiroshima Weather

7 Day Weather Forecast

05.20
wed
DAY
72°F
NW 2 mph
precip
100%
NIGHT
66°F
W 1 mph
precip
100%
05.21
thu
DAY
68°F
NE 5 mph
precip
100%
NIGHT
64°F
NE 4 mph
precip
80%
05.22
fri
DAY
66°F
SE 4 mph
precip
62%
NIGHT
58°F
S 3 mph
precip
0%
05.23
sat
DAY
76°F
N 6 mph
precip
72%
NIGHT
66°F
W 3 mph
precip
100%
05.24
sun
DAY
78°F
S 5 mph
precip
0%
NIGHT
58°F
S 5 mph
precip
0%
05.25
mon
DAY
82°F
N 3 mph
precip
0%
NIGHT
62°F
S 2 mph
precip
0%
05.26
tue
DAY
82°F
N 4 mph
precip
0%
NIGHT
64°F
S 2 mph
precip
0%

Hiroshima Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Hiroshima was 17.1°F. The maximum and minimum values were 14.4°F and 20.3°F respectively.

Hiroshima on the Weather Map

Best Time to Visit Hiroshima
The most sunny months:
May 16 days
October 15 days
April 14 days
The most warm months:
August 92.6 °F
July 89.7 °F
September 85.7 °F
Warmest sea temperature:
August 84.7 °F
September 81.5 °F
July 80.7 °F
The most cold months:
January 45.8 °F
February 47.6 °F
December 49.7 °F
The most rainy months:
June 10 days
July 9 days
August 8 days
The most windy months:
December 6 mph
January 6 mph
February 6 mph
more details