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
January
Weather in January
Temperature
January is the coldest month, with an average high-temperature of 8.7°C (47.7°F) and an average low-temperature of 2.5°C (36.5°F).Humidity
With an average relative humidity of 61%, January is the least humid month in Shiroi.Rainfall
January is the month with the least rainfall in Shiroi, Japan. Rain falls for 7.3 days and accumulates 18mm (0.71") of precipitation.Snowfall
January through March are months with snowfall. January is the first month it typically snows in Shiroi, Japan. Throughout January, in the average 1.8 snowfall days, it receives 6mm (0.24") of snow. In Shiroi, Japan, during the entire year, snow falls for 5 days and aggregates up to 35mm (1.38") of snow.Daylight
In January, the average length of the day in Shiroi is 10h and 3min.On the first day of the month, sunrise is at 06:49 and sunset at 16:36. On the last day of January, in Shiroi, sunrise is at 06:41 and sunset at 17:04 JST.
Sunshine
In Shiroi, the average sunshine in January is 6.3h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 translates into these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Shiroi?
What are January temperatures in Shiroi?
What is the least humid month in Shiroi?
What is the average humidity in January in Shiroi?
What is the driest month in Shiroi?
How many days does it rain in January in Shiroi?
When does it start snowing in Shiroi?
How many hours of daylight does Shiroi have in January?
When is the sunrise / sunset in January in Shiroi?
How many hours of sunshine does Shiroi have in January?
When is the lowest UV index in Shiroi?
What is the UV index intensity in January in Shiroi?
Average temperature in January
Shiroi, Japan
- Average high temperature in January: 8.7°C
The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in January: 2.5°C
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in January
Shiroi, Japan
- Average pressure in January: 1016mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in January
Shiroi, Japan
- Average wind speed in January: 13.4km/h
The windiest month (with the highest average wind speed) is April (14.6km/h).
The calmest month (with the lowest average wind speed) is November (11.3km/h).
Average humidity in January
Shiroi, Japan
- Average humidity in January: 61%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (61%).
Average rainfall in January
Shiroi, Japan
- Average rainfall in January: 18mm
The wettest month (with the highest rainfall) is October (58mm).
The driest month (with the least rainfall) is January (18mm).
Average rainfall days in January
Shiroi, Japan
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is October (15.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in January
Shiroi, Japan
- Average snowfall in January: 6mm
The month with the highest snowfall is February (28mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in January
Shiroi, Japan
- Average snowfall days in January: 1.8 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Shiroi, 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in January
Shiroi, Japan
- Average sunshine days in January: 22 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is September (12.7 days).
Average UV index in January
Shiroi, 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
Shiroi, Japan
- Average cloud cover in January: 30
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in January
Shiroi, Japan
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, September, October, November and December (10km).
The months with the lowest visibility are June, July and August (9km).
