May weather forecastIruma, Japan
May
Weather in May
May, the last month of the spring in Iruma, is a warm month, with an average temperature fluctuating between 23.9°C (75°F) and 15.3°C (59.5°F).Temperature
Iruma's transition into May brings a rise in the average high-temperature, moving from a comfortable 18°C (64.4°F) in April to a moderately hot 23.9°C (75°F). May nights in Iruma experience a consistent temperature drop to a mild 15.3°C (59.5°F).Humidity
In May, the average relative humidity in Iruma is 65%.Rainfall
In Iruma, in May, during 13.3 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In Iruma, during the entire year, the rain falls for 146.2 days and collects up to 669mm (26.34") of precipitation.Snowfall
In Iruma, Japan, snow does not fall in April through October and December.Daylight
In Iruma, the average length of the day in May is 14h and 4min.On the first day of the month, sunrise is at 04:49 and sunset at 18:29. On the last day of May, in Iruma, sunrise is at 04:27 and sunset at 18:52 JST.
Sunshine
In Iruma, the average sunshine in May is 9.5h.UV index
The average daily maximum UV index in May in Iruma is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Iruma, Japan
- Average high temperature in May: 23.9°C
The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in May: 15.3°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in May
Iruma, Japan
- Average pressure in May: 1012mbar
The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in May
Iruma, Japan
- Average wind speed in May: 10.4km/h
The windiest month (with the highest average wind speed) is April (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity in May
Iruma, Japan
- Average humidity in May: 65%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (58%).
Average rainfall in May
Iruma, Japan
- Average rainfall in May: 51mm
The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days in May
Iruma, Japan
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in May
Iruma, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (39mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in May
Iruma, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in May /
Average sunshine in May
Iruma, Japan
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 9h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).
Average sunshine days in May
Iruma, Japan
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in May
Iruma, Japan
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Iruma, Japan
- Average cloud cover in May: 36
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in May
Iruma, Japan
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are June, July, August, September and October (9km).





