Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The coldest time of the year is January, with temperatures averaging a high of 8.4°C (47.1°F) and a low of 1.4°C (34.5°F).Humidity
With an average relative humidity of 58%, January is the least humid month.Rainfall
In Iruma, during January, the rain falls for 4.8 days and regularly aggregates up to 26mm (1.02") of precipitation. In Iruma, Japan, during the entire year, the rain falls for 146.2 days and collects up to 669mm (26.34") of precipitation.Snowfall
Months with snowfall are January through March and November. January is the first month it typically snows in Iruma. Throughout January, in the average 1 snowfall days, it receives 14mm (0.55") of snow. Throughout the year, there are 3.7 snowfall days, and 62mm (2.44") of snow is accumulated.Daylight
In January, the average length of the day is 10h and 2min.On the first day of the month, sunrise is at 06:52 and sunset at 16:38. On the last day of January, sunrise is at 06:43 and sunset at 17:07 JST.
Sunshine
In Iruma, the average sunshine in January is 6.7h.UV index
With an average maximum UV index of 2, January is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What month is the coldest in Iruma?
What is the average January temperature in Iruma?
What is the least humid month in Iruma?
What is the average humidity in January in Iruma?
How many days does it rain in January in Iruma?
When does it start to snow in Iruma?
How many hours of daylight does Iruma have in January?
When is the sunrise / sunset in January in Iruma?
How many hours of sunshine does Iruma have in January?
When is the lowest UV index in Iruma?
What is the UV index reading in January in Iruma?
Average temperature in January
Iruma, Japan
- Average high temperature in January: 8.4°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 January: 1.4°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 January
Iruma, Japan
- Average pressure in January: 1016.6mbar
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 January
Iruma, Japan
- Average wind speed in January: 11.2km/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 January
Iruma, Japan
- Average humidity in January: 58%
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 January
Iruma, Japan
- Average rainfall in January: 26mm
The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days in January
Iruma, Japan
- Average rainfall days in January: 4.8 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 January
Iruma, Japan
- Average snowfall in January: 14mm
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 January
Iruma, Japan
- Average snowfall days in January: 1 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 January /
Average sunshine in January
Iruma, Japan
- Average daylight in January: 10h 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 January: 6h and 4min
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 January
Iruma, Japan
- Average sunshine days in January: 25.3 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 January
Iruma, Japan
- Average UV index in January: 2
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 January
Iruma, Japan
- Average cloud cover in January: 26
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 January
Iruma, Japan
- Average visibility in January: 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).
Iruma, Japan
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