January weather forecastUsui, Japan
January
Weather in January
January, the same as December, in Usui, Japan, is another chilly winter month, with an average temperature fluctuating between 3.7°C (38.7°F) and 9.1°C (48.4°F).Temperature
In Usui, the lowest average temperatures are observed in January, with a high of 9.1°C (48.4°F) and a low of 3.7°C (38.7°F).Humidity
January is the least humid month in Usui, with an average relative humidity of 61%.Rainfall
January is the month with the least rainfall in Usui. Rain falls for 6.3 days and accumulates 9mm (0.35") of precipitation.Snowfall
January and February are months with snowfall in Usui. January is the first month it typically snows. Throughout January, in the average 0.9 snowfall days, it receives 1mm (0.04") of snow. In Usui, during the entire year, snow falls for 2.4 days and aggregates up to 5mm (0.2") of snow.Daylight
In Usui, Japan, the average length of the day in January is 10h and 3min.On the first day of the month, sunrise is at 06:48 and sunset at 16:35. On the last day of January, sunrise is at 06:40 and sunset at 17:04 JST.
Sunshine
In January, the average sunshine is 6.2h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 3 in January transforms into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Usui, Japan
- Average high temperature in January: 9.1°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (9.1°C).
- Average low temperature in January: 3.7°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.7°C).
Average pressure in January
Usui, Japan
- Average pressure in January: 1015.8mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in January
Usui, Japan
- Average wind speed in January: 15.4km/h
The windiest month (with the highest average wind speed) is March (16.5km/h).
The calmest month (with the lowest average wind speed) is June (12.7km/h).
Average humidity in January
Usui, Japan
- Average humidity in January: 61%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is January (61%).
Average rainfall in January
Usui, Japan
- Average rainfall in January: 9mm
The wettest month (with the highest rainfall) is October (29mm).
The driest month (with the least rainfall) is January (9mm).
Average rainfall days in January
Usui, Japan
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is October (11.4 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in January
Usui, Japan
- Average snowfall in January: 1mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in January
Usui, Japan
- Average snowfall days in January: 0.9 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Usui, Japan
- Average daylight in January: 10h 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 January: 6h 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 24min).
Average sunshine days in January
Usui, Japan
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is October (15.6 days).
Average UV index in January
Usui, Japan
- Average UV index in January: 3
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).
Average cloud cover in January
Usui, Japan
- Average cloud cover in January: 30
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in January
Usui, Japan
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).





