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 sea temperature 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
In December, the meteorological conditions alter, with the average high-temperature shifting from a mild 15.6°C (60.1°F) in November to a frosty 9.8°C (49.6°F). During the month of December, Hiji experiences a steady low-temperature average of 3.6°C (38.5°F).Humidity
In Hiji, the average relative humidity in December is 78%.Rainfall
In Hiji, during December, the rain falls for 11 days and regularly aggregates up to 33mm (1.3") of precipitation. In Hiji, during the entire year, the rain falls for 164.8 days and collects up to 676mm (26.61") of precipitation.Snowfall
Months with snowfall in Hiji are January through March and December. December is the first month it typically snows. Throughout December, in the average 2.5 snowfall days, it receives 8mm (0.31") of snow. In Hiji, during the entire year, snow falls for 11.2 days and aggregates up to 58mm (2.28") of snow.Sea temperature
In Hiji, the average seawater temperature in December is 17.6°C (63.7°F).Note: In water of 17.6°C (63.7°F), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 06:59 and sunset at 17:06. On the last day of the month, sunrise is at 07:17 and sunset at 17:16 JST.
Sunshine
In December, the average sunshine is 5.5h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during December leads to these advisories:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
How much does it rain in December?
When does it start to snow?
What is the sea temperature in December?
What is the month with the shortest days?
How many hours of daylight does Hiji have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Hiji have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hiji, Japan
- Average high temperature in December: 9.8°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (8°C).
- Average low temperature in December: 3.6°C
The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in December
Hiji, Japan
- Average pressure in December: 1021.1mbar
The month with the highest atmospheric pressure is January (1021.6mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in December
Hiji, Japan
- Average wind speed in December: 9.7km/h
The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest months (with the lowest average wind speed) are June and July (6.2km/h).
Average humidity in December
Hiji, Japan
- Average humidity in December: 78%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are March, April and May (74%).
Average rainfall in December
Hiji, Japan
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is July (117mm).
The driest month (with the least rainfall) is January (24mm).
Average rainfall days in December
Hiji, Japan
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Hiji, Japan
- Average snowfall in December: 8mm
The month with the highest snowfall is January (26mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Hiji, Japan
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Hiji, Japan
- Average sea temperature in December: 17.6°C
The best month for swimming (with the highest average sea temperature) is August (26.9°C).
The coldest month (with the lowest average sea temperature) is February (13.5°C).
Average daylight in December /
Average sunshine in December
Hiji, Japan
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Hiji, Japan
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is July (6.3 days).
Average UV index in December
Hiji, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Hiji, Japan
- Average cloud cover in December: 40
The month with the most cloud cover is June (Cloud cover 52).
The months with the least cloud cover are May, August and November (Cloud cover 37).
Average visibility in December
Hiji, Japan
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, August, October, November and December (9km).
The month with the lowest visibility is June (7km).
