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 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
December
Weather in December
Temperature
The average high-temperature slightly decreases in December, shifting from a moderately hot 24.9°C (76.8°F) in November to an agreeable 21.9°C (71.4°F). In December, Hirakubo temperatures settle at a low of 20.1°C (68.2°F) during the nights, reflecting a minor change from daytime highs.Humidity
The months with the lowest humidity in Hirakubo, Japan, are January and December, with an average relative humidity of 76%.Rainfall
In Hirakubo, in December, during 21.2 rainfall days, 84mm (3.31") of precipitation is typically accumulated. In Hirakubo, during the entire year, the rain falls for 228.7 days and collects up to 1180mm (46.46") of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 07:10 and sunset at 17:53. On the last day of December, sunrise is at 07:26 and sunset at 18:05 JST.
Sunshine
With an average of 4.1h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 in December interprets into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hirakubo in December?
What is the least humid month in Hirakubo?
What is the average humidity in December in Hirakubo?
How many days does it rain in December in Hirakubo?
What is the month with the shortest days in Hirakubo?
What is the average length of the day in December in Hirakubo?
When are sunrise and sunset in December in Hirakubo?
What is the month with the least sunshine in Hirakubo?
How many hours of sunshine does Hirakubo have in December?
What are the months with the lowest UV index in Hirakubo?
What is the UV index reading in December in Hirakubo?
Average temperature in December
Hirakubo, Japan
- Average high temperature in December: 21.9°C
The warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is January (20.6°C).
- Average low temperature in December: 20.1°C
The month with the highest average low temperature is July (28.4°C).
The coldest month (with the lowest average low temperature) is January (18.7°C).
Average pressure in December
Hirakubo, Japan
- Average pressure in December: 1019.3mbar
The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is August (1005.6mbar).
Average wind speed in December
Hirakubo, Japan
- Average wind speed in December: 32.9km/h
The windiest month (with the highest average wind speed) is December (32.9km/h).
The calmest month (with the lowest average wind speed) is May (20.4km/h).
Average humidity in December
Hirakubo, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January and December (76%).
Average rainfall in December
Hirakubo, Japan
- Average rainfall in December: 84mm
The wettest month (with the highest rainfall) is August (217mm).
The driest month (with the least rainfall) is March (50mm).
Average rainfall days in December
Hirakubo, Japan
- Average rainfall days in December: 21.2 days
The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is April (16.7 days).
Average daylight in December /
Average sunshine in December
Hirakubo, Japan
- Average daylight in December: 10h and 4min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in December
Hirakubo, Japan
- Average sunshine days in December: 6.3 days
The month with the most sunshine days is June (11.8 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in December
Hirakubo, Japan
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 5).
Average cloud cover in December
Hirakubo, Japan
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Hirakubo, Japan
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
