Measurements:
°C
°F
Hiroshima
46°F
SE 11 mph
Feels like: 40°F
Precip: 0%
World Resorts Japan Hiroshima Weather May Weather in Hiroshima

Hiroshima Weather: May

Average Day Temperature: 75.5°F
Average Night Temperature: 57.5°F
Sea Water Temperature: 64.7°F
Number of Sunny Days: 16 days
Sunshine Hours: 13.6 - 14.3 hours
Number of Rainy Days: 6 days
Precipitation Totals: 5.6 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 80°F. The lowest night temperature was 46°F. The average values for day and night temperatures during May were 70.1°F и 56.3°F respectivly.

Hiroshima Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Hiroshima was 64.4°F. The maximum and minimum values were 60.4°F and 68.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Hiroshima is 5.6 in.

Wind Speed in May, mph

The average wind speed in May is 4.4 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Hiroshima in May is 9.1 hours.

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 45.9 °F
February 47.4 °F
December 49.6 °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

Hiroshima on the Weather Map

Japan Resorts:
NAME
Atami +50
Fukuoka +46
Hakone +52
Hiroshima +46
Kamakura +54
Kobe +48
Kyoto +46
Nagasaki +50
Nagoya +48
Nara +48
Okinawa +70
Osaka +50
Sapporo +28
Tokyo +54
Yokohama +54
24 Hours Weather Forecast
Hiroshima
Local time: 16:15
05 dec, friday
1800 38°F
S
5 mph
2100 36°F
S
2 mph
06 dec, saturday
0000 34°F
S
3 mph
0300 34°F
SE
2 mph
0600 32°F
S
3 mph
0900 42°F
SE
0 mph
1200 48°F
NE
6 mph
1500 50°F
NE
6 mph