Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The beginning of December marks a decrease in the average high-temperature, transitioning from a wintry 5.5°C (41.9°F) in November to a freezing cold -1.3°C (29.7°F). Jozankei's average low-temperature in the month of December is recorded at -6.6°C (20.1°F).Humidity
In December, the average relative humidity is 87%.Rainfall
In Jozankei, in December, during 10 rainfall days, 79mm (3.11") of precipitation is typically accumulated. Throughout the year, there are 167.7 rainfall days, and 853mm (33.58") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 24.8 days. Throughout December, 427mm (16.81") of snow is accumulated. Throughout the year, there are 111.9 snowfall days, and 1723mm (67.83") of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 06:46 and sunset at 16:02. On the last day of the month, sunrise is at 07:06 and sunset at 16:10 JST.
Sunshine
The average sunshine in December is 2.6h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Jozankei have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Jozankei, Japan
- Average high temperature in December: -1.3°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 December: -6.6°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (-10°C).
Average pressure in December
Jozankei, Japan
- Average pressure in December: 1013.1mbar
The month with the highest atmospheric pressure is November (1016.2mbar).
The month with the lowest atmospheric pressure is July (1008.6mbar).
Average wind speed in December
Jozankei, Japan
- Average wind speed in December: 12.8km/h
The windiest months (with the highest average wind speed) are April and December (12.8km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in December
Jozankei, Japan
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Jozankei, Japan
- Average rainfall in December: 79mm
The wettest month (with the highest rainfall) is August (112mm).
The driest month (with the least rainfall) is April (51mm).
Average rainfall days in December
Jozankei, Japan
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Jozankei, Japan
- Average snowfall in December: 427mm
The month with the highest snowfall is January (430mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Jozankei, Japan
- Average snowfall days in December: 24.8 days
The month with the highest number of snowfall days is January (28 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jozankei, Japan
- Average daylight in December: 9h and 1min
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 December: 2h and 4min
The month with the most sunshine is August (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in December
Jozankei, Japan
- Average sunshine days in December: 2.7 days
The month with the most sunshine days is May (13.4 days).
The month with the least sunshine days is December (2.7 days).
Average UV index in December
Jozankei, Japan
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Jozankei, Japan
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is October (Cloud cover 42).
Average visibility in December
Jozankei, Japan
- Average visibility in December: 7km
The months with the highest visibility are April, May and October (9km).
The month with the lowest visibility is January (6km).
