Contents
Weather in May
Temperature
Hiroshima's transition into May is marked by a minor temperature shift, moving from a comfortable 19.7°C (67.5°F) in April to a moderately hot 24.1°C (75.4°F). Throughout May, Hiroshima registers a consistent average low-temperature of 14.7°C (58.5°F).Humidity
The average relative humidity in May in Hiroshima is 66%.Rainfall
In Hiroshima, in May, it is raining for 14 days, with typically 178mm (7.01") of accumulated precipitation. Throughout the year, there are 190 rainfall days, and 1538mm (60.55") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Sea temperature
In Hiroshima, in May, the average water temperature is 17.1°C (62.8°F).Note: Swimming in water at 17.1°C (62.8°F) is not a pleasing experience for the majority. As the temperature descends from 21°C (69.8°F) to 15°C (59°F), controlling breathing becomes increasingly hard.
Daylight
In Hiroshima, the average length of the day in May is 13h and 58min.On the first day of May, sunrise is at 05:20 and sunset at 18:54. On the last day of the month, sunrise is at 04:59 and sunset at 19:16 JST.
Sunshine
The average sunshine in May in Hiroshima is 6.7h.UV index
The average daily maximum UV index in May is 9. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 9 in May translates into this advice:
Being careless can result in skin and eye damage. Always take the necessary safety measures. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the temperature in May in Hiroshima?
What is the average humidity in May in Hiroshima?
How much does it rain in Hiroshima in May?
When it does not snow in Hiroshima?
What is the sea water temperature in May in Hiroshima?
How many hours of daylight does Hiroshima have in May?
When is the sunrise / sunset in May in Hiroshima?
How many hours of sunshine does Hiroshima have in May?
What is the UV index intensity in May in Hiroshima?
Average temperature in May
Hiroshima, Japan
- Average high temperature in May: 24.1°C
The warmest month (with the highest average high temperature) is August (32.5°C).
The month with the lowest average high temperature is January (9.7°C).
- Average low temperature in May: 14.7°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).
Average humidity in May
Hiroshima, Japan
- Average humidity in May: 66%
The month with the highest relative humidity is July (74%).
The month with the lowest relative humidity is April (63%).
Average rainfall in May
Hiroshima, Japan
- Average rainfall in May: 177.6mm
The wettest month (with the highest rainfall) is July (258.6mm).
The driest month (with the least rainfall) is December (41.2mm).
Average rainfall days in May
Hiroshima, Japan
- Average rainfall days in May: 14 days
The month with the highest number of rainy days is January (19 days).
The month with the least rainy days is October (12 days).
Average snowfall in May
Hiroshima, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Hiroshima, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Hiroshima, Japan
- Average sea temperature in May: 17.1°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).
Average daylight in May /
Average sunshine in May
Hiroshima, Japan
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 6h and 4min
The month with the most sunshine is August (Average sunshine: 6h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average UV index in May
Hiroshima, Japan
- Average UV index in May: 9
The month with the highest UV index is July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).
Hiroshima, Japan
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