Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Welcoming December, Koga observes a shift in the average high-temperature, falling from November's refreshing 15.4°C (59.7°F) to a chilly 9.6°C (49.3°F). During the month of December, an average low-temperature of 3.5°C (38.3°F) is recorded in Koga, Japan.Humidity
In December, the average relative humidity is 63%.Rainfall
The month with the least rainfall is December, when the rain falls for 7.3 days and typically collects 27mm (1.06") of precipitation.Snowfall
January through March, November and December are months with snowfall in Koga, Japan. In Koga, during December, snow falls for 0.4 days and regularly aggregates up to 1mm (0.04") of snow. In Koga, during the entire year, snow falls for 4.5 days and aggregates up to 61mm (2.4") of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:33 and sunset at 16:26. On the last day of December, sunrise is at 06:51 and sunset at 16:36 JST.
Sunshine
In December, the average sunshine in Koga is 6.5h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Koga?
What is the average humidity in December in Koga?
What is the driest month in Koga?
How many days does it rain in December in Koga?
How much does it snow in Koga in December?
What is the month with the shortest days in Koga?
How many hours of daylight does Koga have in December?
What time are sunrise and sunset in December in Koga?
How many hours of sunshine does Koga have in December?
When is the lowest UV index in Koga?
How high is the UV index in December in Koga?
Average temperature in December
Koga, Japan
- Average high temperature in December: 9.6°C
The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (7.6°C).
- Average low temperature in December: 3.5°C
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in December
Koga, Japan
- Average pressure in December: 1016.5mbar
The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Koga, Japan
- Average wind speed in December: 9.1km/h
The windiest month (with the highest average wind speed) is April (10.2km/h).
The calmest month (with the lowest average wind speed) is November (7.6km/h).
Average humidity in December
Koga, Japan
- Average humidity in December: 63%
The month with the highest relative humidity is July (76%).
The month with the lowest relative humidity is January (60%).
Average rainfall in December
Koga, Japan
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is October (120mm).
The driest month (with the least rainfall) is December (27mm).
Average rainfall days in December
Koga, Japan
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Koga, Japan
- Average snowfall in December: 1mm
The month with the highest snowfall is February (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Koga, Japan
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Koga, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).
Average sunshine days in December
Koga, Japan
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in December
Koga, 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
Koga, Japan
- Average cloud cover in December: 27
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 25).
Average visibility in December
Koga, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, November and December (10km).
The months with the lowest visibility are April, May, June, July, August, September and October (9km).
Koga, Japan
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