December weather forecastOka, Japan
December weather for Oka, Japan: With an average of 9h and 54min of daylight, December has the shortest days of the year in Oka, Japan. In Oka, during December, the rain falls for 14.8 days and regularly aggregates up to 44mm (1.73") of precipitation.
December
Weather in December
December, the first month of the winter in Oka, is still a chilly month, with an average temperature ranging between min 4°C (39.2°F) and max 9.7°C (49.5°F).Temperature
In December, the average high-temperature decreases from a refreshing 15.5°C (59.9°F) in November to a chilly 9.7°C (49.5°F). During the nights in December, the temperature in Oka averages to a wintry 4°C (39.2°F).Humidity
The average relative humidity in December in Oka is 74%.Rainfall
In Oka, during December, the rain falls for 14.8 days and regularly aggregates up to 44mm (1.73") of precipitation. In Oka, during the entire year, the rain falls for 177.4 days and collects up to 831mm (32.72") of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 3.8 snowfall days, it receives 20mm (0.79") of snow. In Oka, during the entire year, snow falls for 17.4 days and aggregates up to 109mm (4.29") of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Oka.On the first day of December, sunrise is at 06:46 and sunset at 16:47. On the last day of the month, sunrise is at 07:04 and sunset at 16:57 JST.
Sunshine
In December, the average sunshine in Oka is 5.2h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Oka. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Oka, Japan
- Average high temperature in December: 9.7°C
The warmest month (with the highest average high temperature) is August (31.5°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in December: 4°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in December
Oka, Japan
- Average pressure in December: 1019.3mbar
The month with the highest atmospheric pressure is February (1019.6mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in December
Oka, Japan
- Average wind speed in December: 9.7km/h
The windiest month (with the highest average wind speed) is January (10.1km/h).
The calmest month (with the lowest average wind speed) is June (7.1km/h).
Average humidity in December
Oka, Japan
- Average humidity in December: 74%
The month with the highest relative humidity is July (78%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in December
Oka, Japan
- Average rainfall in December: 44mm
The wettest month (with the highest rainfall) is July (146mm).
The driest month (with the least rainfall) is November (37mm).
Average rainfall days in December
Oka, Japan
- Average rainfall days in December: 14.8 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is May (11.8 days).
Average snowfall in December
Oka, Japan
- Average snowfall in December: 20mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Oka, Japan
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is January (7.3 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
Oka, Japan
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in December
Oka, Japan
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is May (18 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in December
Oka, 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
Oka, Japan
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Oka, Japan
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
