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
With the onset of December, Susa experiences a modest temperature adjustment, with the average high-temperature receding from a refreshing 14.5°C (58.1°F) in November to a frosty 8.6°C (47.5°F). Throughout December, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 4.4°C (39.9°F).Humidity
In December, the average relative humidity is 78%.Rainfall
In Susa, during December, the rain falls for 19.6 days and regularly aggregates up to 83mm (3.27") of precipitation. Throughout the year, there are 209.9 rainfall days, and 1304mm (51.34") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Susa. In Susa, in December, during 6 snowfall days, 33mm (1.3") of snow is typically accumulated. Throughout the year, there are 23.1 snowfall days, and 161mm (6.34") of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:02 and sunset at 17:02. On the last day of December, sunrise is at 07:20 and sunset at 17:12 JST.
Sunshine
The months with the least sunshine are January and December, with an average of 3.8h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Susa have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Susa, Japan
- Average high temperature in December: 8.6°C
The warmest month (with the highest average high temperature) is August (28.2°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in December: 4.4°C
The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).
Average pressure in December
Susa, Japan
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in December
Susa, Japan
- Average wind speed in December: 15.6km/h
The windiest month (with the highest average wind speed) is December (15.6km/h).
The calmest month (with the lowest average wind speed) is June (8.8km/h).
Average humidity in December
Susa, Japan
- Average humidity in December: 78%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (74%).
Average rainfall in December
Susa, Japan
- Average rainfall in December: 83mm
The wettest month (with the highest rainfall) is July (236mm).
The driest month (with the least rainfall) is November (56mm).
Average rainfall days in December
Susa, Japan
- Average rainfall days in December: 19.6 days
The month with the highest number of rainy days is July (24.3 days).
The month with the least rainy days is May (12.9 days).
Average snowfall in December
Susa, Japan
- Average snowfall in December: 33mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Susa, Japan
- Average snowfall days in December: 6 days
The month with the highest number of snowfall days is January (9.7 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
Susa, Japan
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in December
Susa, Japan
- Average sunshine days in December: 4.9 days
The month with the most sunshine days is May (15.7 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in December
Susa, 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, February and December (UV index 2).
Average cloud cover in December
Susa, Japan
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are May and August (Cloud cover 35).
Average visibility in December
Susa, 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).
