December weather forecastGejo, Japan
December
Weather in December
December, the first month of the winter in Gejo, is still a chilly month, with an average temperature ranging between min 2.3°C (36.1°F) and max 6.5°C (43.7°F).Temperature
The average high-temperature decreases in December, shifting from a cool 12.5°C (54.5°F) in November to a chilly 6.5°C (43.7°F). During the nights of December, the average low-temperature in Gejo holds at an icy 2.3°C (36.1°F).Humidity
In Gejo, the average relative humidity in December is 81%.Rainfall
December is the month with the most rainfall in Gejo. Rain falls for 20.6 days and accumulates 157mm (6.18") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Gejo, during December, snow falls for 12.5 days and regularly aggregates up to 362mm (14.25") of snow. Throughout the year, there are 63.3 snowfall days, and 1604mm (63.15") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December in Gejo, sunrise is at 06:40 and sunset at 16:25. On the last day of the month, sunrise is at 06:58 and sunset at 16:35 JST.
Sunshine
In December, the average sunshine is 2.6h.UV index
January 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 low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Gejo, Japan
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in December: 2.3°C
The month with the highest average low temperature is August (21.5°C).
The coldest month (with the lowest average low temperature) is February (-0.7°C).
Average pressure in December
Gejo, Japan
- Average pressure in December: 1017.2mbar
The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Gejo, Japan
- Average wind speed in December: 15.1km/h
The windiest month (with the highest average wind speed) is January (15.2km/h).
The calmest month (with the lowest average wind speed) is July (7.6km/h).
Average humidity in December
Gejo, Japan
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Gejo, Japan
- Average rainfall in December: 157mm
The wettest month (with the highest rainfall) is December (157mm).
The driest month (with the least rainfall) is May (35mm).
Average rainfall days in December
Gejo, Japan
- Average rainfall days in December: 20.6 days
The month with the highest number of rainy days is December (20.6 days).
The month with the least rainy days is February (11.2 days).
Average snowfall in December
Gejo, Japan
- Average snowfall in December: 362mm
The month with the highest snowfall is January (659mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Gejo, Japan
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (22.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gejo, Japan
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 2h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in December
Gejo, Japan
- Average sunshine days in December: 3.1 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is January (2.6 days).
Average UV index in December
Gejo, Japan
- Average UV index in December: 1
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 1).
Average cloud cover in December
Gejo, Japan
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Gejo, Japan
- Average visibility in December: 8km
The months with the highest visibility are June, August, September and October (10km).
The months with the lowest visibility are January, February and December (8km).
