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
Weather in December
Temperature
With December's arrival, Sasayama sees a decrease in average high-temperatures, moving from a moderate 14.6°C (58.3°F) in November to a chilly 8.6°C (47.5°F). Throughout December, the temperature falls to an average low of 2.6°C (36.7°F).Humidity
In December, the average relative humidity in Sasayama is 81%.Rainfall
In December, in Sasayama, the rain falls for 7.9 days. Throughout December, 18mm (0.71") of precipitation is accumulated. Throughout the year, in Sasayama, there are 131.4 rainfall days, and 393mm (15.47") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows in Sasayama. Throughout December, in the average 1.5 snowfall days, it receives 5mm (0.2") of snow. Throughout the year, there are 8.5 snowfall days, and 24mm (0.94") of snow is accumulated.Daylight
December has the shortest days of the year in Sasayama, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 06:48 and sunset at 16:47. On the last day of December, in Sasayama, sunrise is at 07:07 and sunset at 16:57 JST.
Sunshine
The average sunshine in December in Sasayama is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Sasayama. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Sasayama in December?
What is the average humidity in December in Sasayama?
How many days does it rain in December in Sasayama?
When does it start to snow in Sasayama?
What is the month with the shortest days in Sasayama?
How many hours of daylight does Sasayama have in December?
When is the sunrise / sunset in December in Sasayama?
How many hours of sunshine does Sasayama have in December?
What are the months with the lowest UV index in Sasayama?
What is the UV index intensity in December in Sasayama?
Average temperature in December
Sasayama, Japan
- Average high temperature in December: 8.6°C
The warmest month (with the highest average high temperature) is August (30.7°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in December: 2.6°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in December
Sasayama, Japan
- Average pressure in December: 1019.5mbar
The month with the highest atmospheric pressure is February (1020mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in December
Sasayama, Japan
- Average wind speed in December: 8.8km/h
The windiest month (with the highest average wind speed) is March (9.8km/h).
The calmest month (with the lowest average wind speed) is June (7.5km/h).
Average humidity in December
Sasayama, Japan
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Sasayama, Japan
- Average rainfall in December: 18mm
The wettest month (with the highest rainfall) is July (88mm).
The driest months (with the least rainfall) are January and November (9mm).
Average rainfall days in December
Sasayama, Japan
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Sasayama, Japan
- Average snowfall in December: 5mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Sasayama, Japan
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Sasayama, 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 48min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Sasayama, Japan
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in December
Sasayama, 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
Sasayama, Japan
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Sasayama, Japan
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
Sasayama, Japan
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