Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
In May, the average high-temperature increases from a mild 14.2°C (57.6°F) in April to a comfortable 19.7°C (67.5°F). During May, Iwaki observes a consistent average nighttime temperature of 11.7°C (53.1°F).Humidity
In Iwaki, the average relative humidity in May is 76%.Rainfall
In May, the rain falls for 15.5 days. Throughout May, 97mm (3.82") of precipitation is accumulated. In Iwaki, during the entire year, the rain falls for 195.5 days and collects up to 1085mm (42.72") of precipitation.Snowfall
In Iwaki, snow does not fall in April through October.Daylight
The average length of the day in May in Iwaki is 14h and 9min.On the first day of May in Iwaki, Japan, sunrise is at 04:41 and sunset at 18:25. On the last day of the month, sunrise is at 04:18 and sunset at 18:49 JST.
Sunshine
The average sunshine in May is 9.3h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In May, an average UV index of 5 transforms into the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Iwaki?
What is the average humidity in May in Iwaki?
How much does it rain in Iwaki in May?
When it does not snow in Iwaki?
What is the average length of the day in May in Iwaki?
When are sunrise and sunset in May in Iwaki?
How many hours of sunshine does Iwaki have in May?
What is the UV index intensity in May in Iwaki?
Average temperature in May
Iwaki, Japan
- Average high temperature in May: 19.7°C
The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in May: 11.7°C
The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is January (-1.1°C).
Average pressure in May
Iwaki, Japan
- Average pressure in May: 1012.1mbar
The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1009.4mbar).
Average wind speed in May
Iwaki, Japan
- Average wind speed in May: 12.1km/h
The windiest month (with the highest average wind speed) is January (16.5km/h).
The calmest month (with the lowest average wind speed) is July (9.4km/h).
Average humidity in May
Iwaki, Japan
- Average humidity in May: 76%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (70%).
Average rainfall in May
Iwaki, Japan
- Average rainfall in May: 97mm
The wettest month (with the highest rainfall) is October (152mm).
The driest months (with the least rainfall) are January and February (45mm).
Average rainfall days in May
Iwaki, Japan
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in May
Iwaki, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (67mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Iwaki, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Iwaki, Japan
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in May
Iwaki, Japan
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is July (3.8 days).
Average UV index in May
Iwaki, Japan
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in May
Iwaki, Japan
- Average cloud cover in May: 38
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 33).
Average visibility in May
Iwaki, Japan
- Average visibility in May: 9km
The months with the highest visibility are November and December (10km).
The month with the lowest visibility is July (8km).
