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
In Kotari, the beginning of December is marked by a lowered average high-temperature, shifting from November's refreshing 14.6°C (58.3°F) to a chilly 8.5°C (47.3°F). An average nighttime temperature of 2.5°C (36.5°F) is witnessed throughout December.Humidity
The average relative humidity in December is 80%.Rainfall
In Kotari, in December, during 8.8 rainfall days, 22mm (0.87") of precipitation is typically accumulated. Throughout the year, there are 154.2 rainfall days, and 647mm (25.47") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows in Kotari. Throughout December, in the average 1.1 snowfall days, it receives 5mm (0.2") of snow. Throughout the year, there are 6.3 snowfall days, and 29mm (1.14") of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 06:46 and sunset at 16:45. On the last day of the month, sunrise is at 07:04 and sunset at 16:55 JST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. 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: A maximum daily UV index of 2 during December morphs into the following directions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Kotari?
What is the average humidity in December?
How much does it rain in December?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Kotari have in December?
What is the month with the lowest UV index in Kotari?
How high is the UV index in December?
Average temperature in December
Kotari, Japan
- Average high temperature in December: 8.5°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in December: 2.5°C
The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in December
Kotari, Japan
- Average pressure in December: 1019.2mbar
The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.9mbar).
Average wind speed in December
Kotari, Japan
- Average wind speed in December: 8.1km/h
The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest months (with the lowest average wind speed) are June and July (6.9km/h).
Average humidity in December
Kotari, Japan
- Average humidity in December: 80%
The months with the highest relative humidity are July and October (81%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
Kotari, Japan
- Average rainfall in December: 22mm
The wettest month (with the highest rainfall) is July (134mm).
The driest months (with the least rainfall) are January and November (18mm).
Average rainfall days in December
Kotari, Japan
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in December
Kotari, Japan
- Average snowfall in December: 5mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Kotari, Japan
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Kotari, Japan
- Average daylight in December: 9h and 5min
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 54min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Kotari, Japan
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Kotari, Japan
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Kotari, Japan
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are May and August (Cloud cover 40).
Average visibility in December
Kotari, Japan
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (8km).
The month with the lowest visibility is July (7km).
