December weather forecastRusutsu, Japan
December
Weather in December
December, the first month of the winter in Rusutsu, is still a freezing cold month, with an average temperature varying between -1.6°C (29.1°F) and -6°C (21.2°F).Temperature
Rusutsu's December weather features a mild decline in high-temperatures, reducing from an icy 4.9°C (40.8°F) in November to a freezing cold -1.6°C (29.1°F). Rusutsu records a negligible downturn from daytime temperatures, averaging a low of -6°C (21.2°F) in the month of December.Humidity
In December, the average relative humidity is 88%.Rainfall
In Rusutsu, in December, it is raining for 6.5 days, with typically 102mm (4.02") of accumulated precipitation. In Rusutsu, during the entire year, the rain falls for 157.6 days and collects up to 900mm (35.43") of precipitation.Snowfall
January through May, October through December are months with snowfall in Rusutsu. The month with the most snowfall in Rusutsu is December, when snow falls for 25.9 days and typically aggregates up to 598mm (23.54") of snow.Daylight
The month with the shortest days in Rusutsu is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 06:47 and sunset at 16:03. On the last day of December, sunrise is at 07:06 and sunset at 16:12 JST.
Sunshine
The average sunshine in December in Rusutsu is 1.6h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 1 in December transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rusutsu, Japan
- Average high temperature in December: -1.6°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in December: -6°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (-8.9°C).
Average pressure in December
Rusutsu, Japan
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is November (1016.4mbar).
The month with the lowest atmospheric pressure is July (1008.4mbar).
Average wind speed in December
Rusutsu, Japan
- Average wind speed in December: 14.5km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in December
Rusutsu, Japan
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (79%).
Average rainfall in December
Rusutsu, Japan
- Average rainfall in December: 102mm
The wettest month (with the highest rainfall) is August (105mm).
The driest month (with the least rainfall) is April (52mm).
Average rainfall days in December
Rusutsu, Japan
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in December
Rusutsu, Japan
- Average snowfall in December: 598mm
The month with the highest snowfall is December (598mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Rusutsu, Japan
- Average snowfall days in December: 25.9 days
The month with the highest number of snowfall days is January (28.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rusutsu, Japan
- Average daylight in December: 9h and 6min
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: 1h and 36min
The months with the most sunshine are May and August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).
Average sunshine days in December
Rusutsu, Japan
- Average sunshine days in December: 3.1 days
The month with the most sunshine days is May (13.3 days).
The month with the least sunshine days is January (2.7 days).
Average UV index in December
Rusutsu, Japan
- Average UV index in December: 1
The months with the highest UV index are 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
Rusutsu, Japan
- Average cloud cover in December: 83
The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is September (Cloud cover 45).
Average visibility in December
Rusutsu, Japan
- Average visibility in December: 7km
The months with the highest visibility are April, May and October (9km).
The months with the lowest visibility are January, February, July, August and December (7km).
