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
The commencement of December indicates a shift in the average high-temperature, receding from November's refreshing 14.9°C (58.8°F) to a frosty 9.6°C (49.3°F). The nighttime temperature in Unehara demonstrates a marginal decline, averaging at a cold 4.7°C (40.5°F) during December.Humidity
In December, the average relative humidity is 76%.Rainfall
In December, the rain falls for 9.8 days. Throughout December, 21mm (0.83") of precipitation is accumulated. Throughout the year, in Unehara, there are 137.3 rainfall days, and 405mm (15.94") of precipitation is accumulated.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows in Unehara, Japan. Throughout December, in the average 2.9 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Unehara, there are 12.4 snowfall days, and 21mm (0.83") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December in Unehara, sunrise is at 06:51 and sunset at 16:51. On the last day of the month, sunrise is at 07:09 and sunset at 17:01 JST.
Sunshine
The average sunshine in December in Unehara is 5.4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Unehara?
What is the average humidity in December in Unehara?
How much does it rain in Unehara in December?
When does it start snowing in Unehara?
What is the month with the shortest days in Unehara?
How many hours of daylight does Unehara have in December?
What time are sunrise and sunset in December in Unehara?
How many hours of sunshine does Unehara have in December?
What is the month with the lowest UV index in Unehara?
How high is the UV index in December in Unehara?
Average temperature in December
Unehara, Japan
- Average high temperature in December: 9.6°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in December: 4.7°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 (2.3°C).
Average pressure in December
Unehara, Japan
- Average pressure in December: 1019.8mbar
The month with the highest atmospheric pressure is February (1020.3mbar).
The month with the lowest atmospheric pressure is June (1008.6mbar).
Average wind speed in December
Unehara, Japan
- Average wind speed in December: 15km/h
The windiest month (with the highest average wind speed) is January (15.3km/h).
The calmest month (with the lowest average wind speed) is June (8.7km/h).
Average humidity in December
Unehara, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are March and April (73%).
Average rainfall in December
Unehara, Japan
- Average rainfall in December: 21mm
The wettest month (with the highest rainfall) is July (78mm).
The driest month (with the least rainfall) is November (11mm).
Average rainfall days in December
Unehara, Japan
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in December
Unehara, Japan
- Average snowfall in December: 3mm
The month with the highest snowfall is February (11mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Unehara, Japan
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is January (4.8 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
Unehara, Japan
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Unehara, Japan
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is March (20.1 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in December
Unehara, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Unehara, Japan
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Unehara, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
