December weather forecastGenka, Japan
December
Weather in December
The first month of the winter, December, is still a pleasant month in Genka, Japan, with an average temperature ranging between min 18.3°C (64.9°F) and max 20.2°C (68.4°F).Temperature
The onset of December results in a small decrease in the average high-temperature, moderately receding from a moderately hot 23.6°C (74.5°F) in November to a pleasant 20.2°C (68.4°F). December nights in Genka anticipate an average temperature of 18.3°C (64.9°F), a modest decline from the daytime.Humidity
In December, the average relative humidity in Genka is 73%.Rainfall
In Genka, in December, during 20.4 rainfall days, 78mm (3.07") of precipitation is typically accumulated. Throughout the year, there are 229.8 rainfall days, and 1512mm (59.53") of precipitation is accumulated.Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year in Genka.On the first day of the month, sunrise is at 06:59 and sunset at 17:34. On the last day of December, sunrise is at 07:15 and sunset at 17:45 JST.
Sunshine
The average sunshine in December in Genka, Japan, is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 in December translates into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Genka, Japan
- Average high temperature in December: 20.2°C
The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (18.6°C).
- Average low temperature in December: 18.3°C
The month with the highest average low temperature is August (27.8°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).
Average pressure in December
Genka, Japan
- Average pressure in December: 1020mbar
The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is August (1006.7mbar).
Average wind speed in December
Genka, Japan
- Average wind speed in December: 25.7km/h
The windiest month (with the highest average wind speed) is December (25.7km/h).
The calmest month (with the lowest average wind speed) is May (18.4km/h).
Average humidity in December
Genka, Japan
- Average humidity in December: 73%
The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is January (72%).
Average rainfall in December
Genka, Japan
- Average rainfall in December: 78mm
The wettest month (with the highest rainfall) is June (228mm).
The driest month (with the least rainfall) is January (63mm).
Average rainfall days in December
Genka, Japan
- Average rainfall days in December: 20.4 days
The month with the highest number of rainy days is June (22.6 days).
The month with the least rainy days is November (16.2 days).
Average daylight in December /
Average sunshine in December
Genka, Japan
- Average daylight in December: 10h and 30min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Genka, Japan
- Average sunshine days in December: 7.1 days
The month with the most sunshine days is May (11.1 days).
The month with the least sunshine days is June (5.4 days).
Average UV index in December
Genka, Japan
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Genka, Japan
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Genka, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
