December weather forecastOkoppe, Japan
December
Weather in December
December, the first month of the winter in Okoppe, is still a freezing cold month, with temperature in the range of an average high of -1.2°C (29.8°F) and an average low of -5.1°C (22.8°F).Temperature
December shows a mild decline in the average high-temperature, falling from November's wintry 4.7°C (40.5°F) to a subzero cold -1.2°C (29.8°F). The December average low temperature in Okoppe, marginally lower than the daytime high, records at -5.1°C (22.8°F).Humidity
In December, the average relative humidity is 82%.Rainfall
In Okoppe, Japan, in December, it is raining for 8 days, with typically 65mm (2.56") of accumulated precipitation. Throughout the year, in Okoppe, there are 145.9 rainfall days, and 766mm (30.16") of precipitation is accumulated.Snowfall
Months with snowfall in Okoppe, Japan, are January through May, October through December. In Okoppe, during December, snow falls for 23.8 days and regularly aggregates up to 287mm (11.3") of snow. Throughout the year, there are 114 snowfall days, and 1412mm (55.59") of snow is accumulated.Daylight
The month with the shortest days in Okoppe is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 06:43 and sunset at 15:49. On the last day of the month, sunrise is at 07:03 and sunset at 15:57 JST.
Sunshine
The average sunshine in December in Okoppe is 2.4h.UV index
The months with the lowest UV index are January, March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 1 during December translates into these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Okoppe, Japan
- Average high temperature in December: -1.2°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The months with the lowest average high temperature are January and February (-3.9°C).
- Average low temperature in December: -5.1°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (-8.8°C).
Average pressure in December
Okoppe, Japan
- Average pressure in December: 1011.3mbar
The month with the highest atmospheric pressure is October (1014.9mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed in December
Okoppe, Japan
- Average wind speed in December: 19.2km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (9.1km/h).
Average humidity in December
Okoppe, Japan
- Average humidity in December: 82%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Okoppe, Japan
- Average rainfall in December: 65mm
The wettest month (with the highest rainfall) is August (110mm).
The driest month (with the least rainfall) is April (40mm).
Average rainfall days in December
Okoppe, Japan
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is August (17.9 days).
The months with the least rainy days are January and February (4.5 days).
Average snowfall in December
Okoppe, Japan
- Average snowfall in December: 287mm
The month with the highest snowfall is January (289mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Okoppe, Japan
- Average snowfall days in December: 23.8 days
The month with the highest number of snowfall days is January (25.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Okoppe, Japan
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 2h and 24min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in December
Okoppe, Japan
- Average sunshine days in December: 2.8 days
The month with the most sunshine days is May (13.9 days).
The month with the least sunshine days is December (2.8 days).
Average UV index in December
Okoppe, 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, March, November and December (UV index 1).
Average cloud cover in December
Okoppe, Japan
- Average cloud cover in December: 76
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in December
Okoppe, Japan
- Average visibility in December: 8km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February, March, June, July, August and December (8km).
