May weather forecastIyo, Japan
May
Weather in May
The last month of the spring, May, is an agreeable month in Iyo, Japan, with an average temperature varying between 20.8°C (69.4°F) and 14.1°C (57.4°F).Temperature
With the onset of May, Iyo's weather sees a minor temperature rise, transitioning from a comfortable 16.1°C (61°F) in April to an agreeable 20.8°C (69.4°F). In Iyo, May's nights observe an average temperature dip to a moderate 14.1°C (57.4°F).Humidity
In Iyo, the average relative humidity in May is 75%.Rainfall
In Iyo, during May, the rain falls for 11.7 days and regularly aggregates up to 67mm (2.64") of precipitation. Throughout the year, in Iyo, there are 162.8 rainfall days, and 749mm (29.49") of precipitation is accumulated.Snowfall
In Iyo, snow does not fall in March through November.Sea temperature
In May, the average sea temperature in Iyo is 19.2°C (66.6°F).Note: Swimming is not a pleasurable activity for the majority in water at 19.2°C (66.6°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Iyo, the average length of the day in May is 13h and 55min.On the first day of the month, sunrise is at 05:20 and sunset at 18:52. On the last day of May, sunrise is at 04:59 and sunset at 19:14 JST.
Sunshine
The average sunshine in May is 9.8h.UV index
In May, the average daily maximum UV index 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 average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Iyo, Japan
- Average high temperature in May: 20.8°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8°C).
- Average low temperature in May: 14.1°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in May
Iyo, Japan
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in May
Iyo, Japan
- Average wind speed in May: 7.7km/h
The windiest month (with the highest average wind speed) is January (12.2km/h).
The calmest month (with the lowest average wind speed) is June (6.6km/h).
Average humidity in May
Iyo, Japan
- Average humidity in May: 75%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (72%).
Average rainfall in May
Iyo, Japan
- Average rainfall in May: 67mm
The wettest month (with the highest rainfall) is June (149mm).
The driest month (with the least rainfall) is January (24mm).
Average rainfall days in May
Iyo, Japan
- Average rainfall days in May: 11.7 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Iyo, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is December (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Iyo, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Iyo, Japan
- Average sea temperature in May: 19.2°C
The best month for swimming (with the highest average sea temperature) is August (27.2°C).
The coldest month (with the lowest average sea temperature) is February (14.7°C).
Average daylight in May /
Average sunshine in May
Iyo, Japan
- Average daylight in May: 13h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 9h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in May
Iyo, Japan
- Average sunshine days in May: 17.2 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (6.4 days).
Average UV index in May
Iyo, 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 and December (UV index 2).
Average cloud cover in May
Iyo, Japan
- Average cloud cover in May: 32
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Iyo, Japan
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).
