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
Weather in December
Temperature
Stepping into December, Najima observes a temperature decline, with the average high falling from November's enjoyable 16.4°C (61.5°F) to a cool 10.5°C (50.9°F). Najima observes a minimal variance in temperature, with a consistent average low of 5.8°C (42.4°F) during the nights of December.Humidity
In Najima, the average relative humidity in December is 73%.Rainfall
In December, the rain falls for 17.3 days. Throughout December, 70mm (2.76") of precipitation is accumulated. Throughout the year, in Najima, there are 178 rainfall days, and 1063mm (41.85") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Najima, Japan. December is the first month it typically snows in Najima. Throughout December, in the average 2.5 snowfall days, it receives 12mm (0.47") of snow. Throughout the year, there are 10.4 snowfall days, and 48mm (1.89") of snow is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:04 and sunset at 17:09. On the last day of December, sunrise is at 07:22 and sunset at 17:20 JST.
Sunshine
In December, the average sunshine in Najima is 4.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the average December temperature in Najima?
What is the average humidity in December in Najima?
How much does it rain in Najima in December?
When does it start to snow in Najima?
What is the month with the shortest days in Najima?
What is the average length of the day in December in Najima?
What time are sunrise and sunset in December in Najima?
How long on average sun shines in December in Najima?
When is the lowest UV index in Najima?
What is the UV index reading in December in Najima?
Average temperature in December
Najima, Japan
- Average high temperature in December: 10.5°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 (8.4°C).
- Average low temperature in December: 5.8°C
The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in December
Najima, Japan
- Average pressure in December: 1021.5mbar
The month with the highest atmospheric pressure is January (1022.1mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in December
Najima, Japan
- Average wind speed in December: 14.1km/h
The windiest month (with the highest average wind speed) is January (14.2km/h).
The calmest month (with the lowest average wind speed) is June (9.4km/h).
Average humidity in December
Najima, Japan
- Average humidity in December: 73%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (72%).
Average rainfall in December
Najima, Japan
- Average rainfall in December: 70mm
The wettest month (with the highest rainfall) is July (193mm).
The driest month (with the least rainfall) is January (52mm).
Average rainfall days in December
Najima, Japan
- Average rainfall days in December: 17.3 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is May (10.8 days).
Average snowfall in December
Najima, Japan
- Average snowfall in December: 12mm
The month with the highest snowfall is January (22mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Najima, Japan
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.9 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
Najima, Japan
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Najima, Japan
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in December
Najima, 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 and December (UV index 2).
Average cloud cover in December
Najima, Japan
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Najima, Japan
- Average visibility in December: 10km
The months with the highest visibility are March, September, October, November and December (10km).
The months with the lowest visibility are January, February, April, May, June, July and August (9km).
Najima, Japan
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