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
Onset of December witnesses a reduction in the average high-temperature, falling from a wintry 4.9°C (40.8°F) in November to a subzero cold -1.6°C (29.1°F). An average nighttime temperature of -6°C (21.2°F) marks December.Humidity
In December, the average relative humidity in Tomari is 88%.Rainfall
In Tomari, in December, during 6.5 rainfall days, 102mm (4.02") of precipitation is typically accumulated. Throughout the year, there are 157.1 rainfall days, and 887mm (34.92") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 25.9 days and typically aggregates up to 598mm (23.54") of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 06:49 and sunset at 16:04. On the last day of the month, sunrise is at 07:09 and sunset at 16:12 JST.
Sunshine
In December, the average sunshine is 1.7h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Tomari?
What is the average humidity in December in Tomari?
How many days does it rain in December in Tomari?
When does it snow the most in Tomari?
How many days does it snow in December in Tomari?
What is the month with the shortest days in Tomari?
What is the average length of the day in December in Tomari?
When are sunrise and sunset in December in Tomari?
How many hours of sunshine does Tomari have in December?
What is the month with the lowest UV index in Tomari?
What is the UV index intensity in December in Tomari?
Average temperature in December
Tomari, Japan
- Average high temperature in December: -1.6°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in December: -6°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (-8.9°C).
Average pressure in December
Tomari, Japan
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is November (1016.4mbar).
The month with the lowest atmospheric pressure is July (1008.4mbar).
Average wind speed in December
Tomari, Japan
- Average wind speed in December: 14.5km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in December
Tomari, Japan
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (79%).
Average rainfall in December
Tomari, Japan
- Average rainfall in December: 102mm
The wettest month (with the highest rainfall) is August (105mm).
The driest month (with the least rainfall) is April (52mm).
Average rainfall days in December
Tomari, Japan
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in December
Tomari, Japan
- Average snowfall in December: 598mm
The month with the highest snowfall is December (598mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Tomari, Japan
- Average snowfall days in December: 25.9 days
The month with the highest number of snowfall days is January (28.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Tomari, Japan
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 1h and 4min
The months with the most sunshine are May and August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).
Average sunshine days in December
Tomari, Japan
- Average sunshine days in December: 3.1 days
The month with the most sunshine days is May (13.3 days).
The month with the least sunshine days is January (2.7 days).
Average UV index in December
Tomari, Japan
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Tomari, Japan
- Average cloud cover in December: 83
The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is September (Cloud cover 43).
Average visibility in December
Tomari, Japan
- Average visibility in December: 7km
The months with the highest visibility are April, May and October (9km).
The months with the lowest visibility are January, February, July, August and December (7km).
Tomari, Japan
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