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
December
Weather in December
Temperature
Welcoming December, Hachimantai observes a shift in the average high-temperature, falling from November's fresh 10.5°C (50.9°F) to a wintry 3.8°C (38.8°F). Throughout December, Hachimantai observes a steady low-temperature average of -0.1°C (31.8°F), reflecting a minor dip from daytime highs.Humidity
In December, the average relative humidity is 76%.Rainfall
In Hachimantai, in December, it is raining for 11.5 days, with typically 49mm (1.93") of accumulated precipitation. Throughout the year, there are 156.7 rainfall days, and 740mm (29.13") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Hachimantai, Japan, in December, snow falls for 15.5 days, with typically accumulated 162mm (6.38") of snow. In Hachimantai, during the entire year, snow falls for 67.1 days and aggregates up to 669mm (26.34") of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 06:38 and sunset at 16:11. On the last day of the month, sunrise is at 06:57 and sunset at 16:20 JST.
Sunshine
In December, the average sunshine is 4.1h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
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. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hachimantai have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Hachimantai have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hachimantai, Japan
- Average high temperature in December: 3.8°C
The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in December: -0.1°C
The month with the highest average low temperature is August (19.9°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).
Average pressure in December
Hachimantai, Japan
- Average pressure in December: 1014.3mbar
The month with the highest atmospheric pressure is November (1017.3mbar).
The month with the lowest atmospheric pressure is July (1009.1mbar).
Average wind speed in December
Hachimantai, Japan
- Average wind speed in December: 19.3km/h
The windiest month (with the highest average wind speed) is December (19.3km/h).
The calmest month (with the lowest average wind speed) is July (9.9km/h).
Average humidity in December
Hachimantai, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Hachimantai, Japan
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is July (108mm).
The driest month (with the least rainfall) is November (29mm).
Average rainfall days in December
Hachimantai, Japan
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
Hachimantai, Japan
- Average snowfall in December: 162mm
The month with the highest snowfall is January (171mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Hachimantai, Japan
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Hachimantai, Japan
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is May (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Hachimantai, Japan
- Average sunshine days in December: 7.2 days
The month with the most sunshine days is May (17.6 days).
The month with the least sunshine days is January (6.7 days).
Average UV index in December
Hachimantai, Japan
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Hachimantai, Japan
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are May and October (Cloud cover 37).
Average visibility in December
Hachimantai, Japan
- Average visibility in December: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is July (8km).
