May weather forecastHeiwajima, Japan
May
Weather in May
May, the last month of the spring in Heiwajima, is a pleasant month, with an average temperature ranging between max 21.9°C (71.4°F) and min 16.2°C (61.2°F).Temperature
With the onset of May, Heiwajima's average high-temperature sees a modest rise, moving from April's enjoyable 17.2°C (63°F) to an agreeable 21.9°C (71.4°F). May in Heiwajima witnesses an average low-temperature hovering around an enjoyable 16.2°C (61.2°F).Humidity
In May, the average relative humidity is 72%.Rainfall
In May, the rain falls for 12.8 days. Throughout May, 56mm (2.2") of precipitation is accumulated. In Heiwajima, during the entire year, the rain falls for 154.1 days and collects up to 754mm (29.69") of precipitation.Snowfall
April through December are months without snowfall in Heiwajima.Daylight
In Heiwajima, the average length of the day in May is 14h and 2min.On the first day of May, sunrise is at 04:48 and sunset at 18:27. On the last day of the month, sunrise is at 04:26 and sunset at 18:50 JST.
Sunshine
In May, the average sunshine in Heiwajima is 9.2h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Heiwajima, Japan
- Average high temperature in May: 21.9°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in May: 16.2°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3.4°C).
Average pressure in May
Heiwajima, Japan
- Average pressure in May: 1011.9mbar
The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in May
Heiwajima, Japan
- Average wind speed in May: 15.6km/h
The windiest month (with the highest average wind speed) is April (17.3km/h).
The calmest month (with the lowest average wind speed) is June (13.6km/h).
Average humidity in May
Heiwajima, Japan
- Average humidity in May: 72%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (61%).
Average rainfall in May
Heiwajima, Japan
- Average rainfall in May: 56mm
The wettest month (with the highest rainfall) is October (100mm).
The driest month (with the least rainfall) is December (36mm).
Average rainfall days in May
Heiwajima, Japan
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in May
Heiwajima, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (37mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in May
Heiwajima, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Heiwajima, Japan
- Average daylight in May: 14h and 0min
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 12min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in May
Heiwajima, Japan
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in May
Heiwajima, Japan
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in May
Heiwajima, Japan
- Average cloud cover in May: 37
The months with the most cloud cover are June and October (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in May
Heiwajima, Japan
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





