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 sea temperature 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
As Tomakomai enters December, the average high-temperature decreases from the a frosty 7.5°C (45.5°F) of November to an icy 1.2°C (34.2°F). December nights in Tomakomai document an average temperature reading of -3.2°C (26.2°F).Humidity
The average relative humidity in December is 78%.Rainfall
In December, in Tomakomai, Japan, the rain falls for 6.9 days. Throughout December, 29mm (1.14") of precipitation is accumulated. In Tomakomai, during the entire year, the rain falls for 119.1 days and collects up to 428mm (16.85") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Tomakomai, in December, snow falls for 7.8 days, with typically accumulated 61mm (2.4") of snow. Throughout the year, in Tomakomai, there are 43.3 snowfall days, and 428mm (16.85") of snow is accumulated.Sea temperature
In Tomakomai, the average seawater temperature in December is 8.3°C (46.9°F).Note: In 8.3°C (46.9°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).
Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 06:43 and sunset at 16:01. On the last day of the month, sunrise is at 07:03 and sunset at 16:09 JST.
Sunshine
The average sunshine in December is 4.4h.UV index
In Tomakomai, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is it in Tomakomai in December?
What is the average humidity in December in Tomakomai?
How much does it rain in Tomakomai in December?
How much does it snow in Tomakomai in December?
How cold is the water in December in Tomakomai?
What is the month with the shortest days in Tomakomai?
How many hours of daylight does Tomakomai have in December?
What time are sunrise and sunset in December in Tomakomai?
How many hours of sunshine does Tomakomai have in December?
How high is the UV index in December in Tomakomai?
Average temperature in December
Tomakomai, Japan
- Average high temperature in December: 1.2°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in December: -3.2°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is February (-7.2°C).
Average pressure in December
Tomakomai, Japan
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is November (1016.3mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in December
Tomakomai, Japan
- Average wind speed in December: 15.9km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).
Average humidity in December
Tomakomai, Japan
- Average humidity in December: 78%
The month with the highest relative humidity is July (87%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in December
Tomakomai, Japan
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is August (65mm).
The driest month (with the least rainfall) is January (17mm).
Average rainfall days in December
Tomakomai, Japan
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is July (14.8 days).
The months with the least rainy days are January and February (3.9 days).
Average snowfall in December
Tomakomai, Japan
- Average snowfall in December: 61mm
The month with the highest snowfall is February (119mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Tomakomai, Japan
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Tomakomai, Japan
- Average sea temperature in December: 8.3°C
The best month for swimming (with the highest average sea temperature) is August (20.8°C).
The coldest month (with the lowest average sea temperature) is March (2.8°C).
Average daylight in December /
Average sunshine in December
Tomakomai, 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: 4h and 2min
The month with the most sunshine is May (Average sunshine: 9h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in December
Tomakomai, Japan
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Tomakomai, Japan
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Tomakomai, Japan
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in December
Tomakomai, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, April, September, October, November and December (10km).
The month with the lowest visibility is July (8km).
Tomakomai, Japan
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