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
December's onset corresponds with a shift in the average high-temperature, moving from a refreshing 16.7°C (62.1°F) in November to a cool 11.7°C (53.1°F). Susami reports an average low temperature of 7.6°C (45.7°F) in December, a minor decrease from the day's highs.Humidity
In December, the average relative humidity is 72%.Rainfall
In Susami, in December, during 10.9 rainfall days, 51mm (2.01") of precipitation is typically accumulated. Throughout the year, there are 172.3 rainfall days, and 1363mm (53.66") of precipitation is accumulated.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 1mm (0.04") of snow. In Susami, during the entire year, snow falls for 2.3 days and aggregates up to 4mm (0.16") of snow.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 06:44 and sunset at 16:49. On the last day of the month, sunrise is at 07:02 and sunset at 17:00 JST.
Sunshine
In December, the average sunshine is 6.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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 month with the shortest days?
How many hours of daylight does Susami have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Susami, Japan
- Average high temperature in December: 11.7°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in December: 7.6°C
The month with the highest average low temperature is August (25°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in December
Susami, Japan
- Average pressure in December: 1019.1mbar
The months with the highest atmospheric pressure are January and February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in December
Susami, Japan
- Average wind speed in December: 20.3km/h
The windiest month (with the highest average wind speed) is January (21.6km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in December
Susami, Japan
- Average humidity in December: 72%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is January (70%).
Average rainfall in December
Susami, Japan
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is July (226mm).
The driest month (with the least rainfall) is January (41mm).
Average rainfall days in December
Susami, Japan
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Susami, Japan
- Average snowfall in December: 1mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Susami, Japan
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1 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
Susami, 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: 6h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in December
Susami, Japan
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is May (18 days).
The month with the least sunshine days is August (5.5 days).
Average UV index in December
Susami, Japan
- Average UV index in December: 3
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 3).
Average cloud cover in December
Susami, Japan
- Average cloud cover in December: 31
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is November (Cloud cover 29).
Average visibility in December
Susami, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
