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
Setting in of December comes with a decrease in the average high-temperature, moving from a cool 12.7°C (54.9°F) in November to a frosty 6.3°C (43.3°F). Tonami usually reports an average low-temperature of 1.1°C (34°F) during the month of December.Humidity
The average relative humidity in December is 83%.Rainfall
In December, in Tonami, Japan, the rain falls for 18.9 days. Throughout December, 138mm (5.43") of precipitation is accumulated. In Tonami, Japan, during the entire year, the rain falls for 191 days and collects up to 1371mm (53.98") of precipitation.Snowfall
January through April, November and December are months with snowfall in Tonami. In Tonami, in December, snow falls for 8.9 days, with typically accumulated 298mm (11.73") of snow. Throughout the year, there are 42.8 snowfall days, and 1177mm (46.34") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December in Tonami, sunrise is at 06:45 and sunset at 16:36. On the last day of the month, sunrise is at 07:04 and sunset at 16:46 JST.
Sunshine
The average sunshine in December in Tonami is 3.7h.UV index
The months with the lowest UV index in Tonami are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 1 in December leads to these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
Is December cold in Tonami?
What is the average humidity in December in Tonami?
How much does it rain in Tonami in December?
How much does it snow in Tonami in December?
What is the month with the shortest days in Tonami?
What is the average length of the day in December in Tonami?
When are sunrise and sunset in December in Tonami?
How many hours of sunshine does Tonami have in December?
When is the lowest UV index in Tonami?
How high is the UV index in December in Tonami?
Average temperature in December
Tonami, Japan
- Average high temperature in December: 6.3°C
The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in December: 1.1°C
The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).
Average pressure in December
Tonami, Japan
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Tonami, Japan
- Average wind speed in December: 10.7km/h
The windiest month (with the highest average wind speed) is December (10.7km/h).
The calmest months (with the lowest average wind speed) are June and August (6.9km/h).
Average humidity in December
Tonami, Japan
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Tonami, Japan
- Average rainfall in December: 138mm
The wettest month (with the highest rainfall) is July (177mm).
The driest month (with the least rainfall) is May (77mm).
Average rainfall days in December
Tonami, Japan
- Average rainfall days in December: 18.9 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is February (11.6 days).
Average snowfall in December
Tonami, Japan
- Average snowfall in December: 298mm
The month with the highest snowfall is January (440mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Tonami, Japan
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Tonami, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Tonami, Japan
- Average sunshine days in December: 7.3 days
The month with the most sunshine days is May (16.7 days).
The month with the least sunshine days is January (7.1 days).
Average UV index in December
Tonami, Japan
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Tonami, Japan
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 34).
Average visibility in December
Tonami, Japan
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, August, September, October, November and December (9km).
The months with the lowest visibility are January, February and July (8km).
Tonami, Japan
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