December weather forecastNajima, Japan
December
Weather in December
The first month of the winter, December, is still a cool month in Najima, Japan, with an average temperature varying between 10.5°C (50.9°F) and 5.8°C (42.4°F).Temperature
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a comfortable 16.4°C (61.5°F) to a cool 10.5°C (50.9°F). Throughout the nights in December, Najima notes an average low of 5.8°C (42.4°F), a small dip from the daytime peak.Humidity
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. In Najima, during the entire year, the rain falls for 178 days and collects up to 1063mm (41.85") of precipitation.Snowfall
January through March and December are months with snowfall. 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. In Najima, during the entire year, snow falls for 10.4 days and aggregates up to 48mm (1.89") of snow.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.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 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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 18min
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).
