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
Iwamizawa records the coldest temperatures in January, averaging a high of -3.7°C (25.3°F) and a low of -10.2°C (13.6°F).Humidity
With an average relative humidity of 91%, January is the most humid month in Iwamizawa.Rainfall
In Iwamizawa, Japan, during January, the rain falls for 6.1 days and regularly aggregates up to 49mm (1.93") of precipitation. In Iwamizawa, during the entire year, the rain falls for 162.3 days and collects up to 769mm (30.28") of precipitation.Snowfall
January through May, October through December are months with snowfall in Iwamizawa, Japan. In January, it is snowing for 25.8 days. Throughout January, 369mm (14.53") of snow is accumulated. In Iwamizawa, during the entire year, snow falls for 109.6 days and aggregates up to 1497mm (58.94") of snow.Daylight
In Iwamizawa, the average length of the day in January is 9h and 24min.On the first day of the month, sunrise is at 07:04 and sunset at 16:07. On the last day of January, sunrise is at 06:50 and sunset at 16:42 JST.
Sunshine
January has the least sunshine of the year, with an average of 2.4h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What are the coldest months in Iwamizawa?
How cold is January in Iwamizawa?
What is the most humid month in Iwamizawa?
What is the average humidity in January in Iwamizawa?
How many days does it rain in January in Iwamizawa?
How much does it snow in Iwamizawa in January?
How many hours of daylight does Iwamizawa have in January?
When is the sunrise / sunset in January in Iwamizawa?
What is the month with the least sunshine in Iwamizawa?
How long on average sun shines in January in Iwamizawa?
What is the month with the lowest UV index in Iwamizawa?
What is the UV index intensity in January in Iwamizawa?
Average temperature in January
Iwamizawa, Japan
- Average high temperature in January: -3.7°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (-3.7°C).
- Average low temperature in January: -10.2°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (-10.6°C).
Average pressure in January
Iwamizawa, Japan
- Average pressure in January: 1013mbar
The month with the highest atmospheric pressure is November (1016mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed in January
Iwamizawa, Japan
- Average wind speed in January: 11km/h
The windiest month (with the highest average wind speed) is April (12.1km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in January
Iwamizawa, Japan
- Average humidity in January: 91%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall in January
Iwamizawa, Japan
- Average rainfall in January: 49mm
The wettest month (with the highest rainfall) is August (118mm).
The driest months (with the least rainfall) are February and April (44mm).
Average rainfall days in January
Iwamizawa, Japan
- Average rainfall days in January: 6.1 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in January
Iwamizawa, Japan
- Average snowfall in January: 369mm
The month with the highest snowfall is December (394mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in January
Iwamizawa, Japan
- Average snowfall days in January: 25.8 days
The month with the highest number of snowfall days is January (25.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Iwamizawa, Japan
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 2h and 2min
The month with the most sunshine is May (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in January
Iwamizawa, Japan
- Average sunshine days in January: 4.3 days
The month with the most sunshine days is May (13.8 days).
The month with the least sunshine days is December (3 days).
Average UV index in January
Iwamizawa, Japan
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Iwamizawa, Japan
- Average cloud cover in January: 77
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in January
Iwamizawa, Japan
- Average visibility in January: 6km
The months with the highest visibility are April, May and October (9km).
The month with the lowest visibility is January (6km).
Iwamizawa, Japan
Weather forecast for your location
2. Allow the app to use your location
