December weather forecastTomari, Japan
December
Weather in December
December, the first month of the winter in Tomari, is also a subzero cold month, with an average temperature ranging between min -6°C (21.2°F) and max -1.6°C (29.1°F).Temperature
Setting in of December comes with a decrease in the average high-temperature, moving from a wintry 4.9°C (40.8°F) in November to a freezing cold -1.6°C (29.1°F). Tomari's evenings during December maintain an average temperature of -6°C (21.2°F), aligning closely with the daytime temperatures.Humidity
In December, the average relative humidity is 88%.Rainfall
In Tomari, in December, it is raining for 6.5 days, with typically 102mm (4.02") of accumulated precipitation. In Tomari, during the entire year, the rain falls for 157.1 days and collects up to 887mm (34.92") of precipitation.Snowfall
Months with snowfall are January through May, October through December. 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
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 06:49 and sunset at 16:04. On the last day of December, in Tomari, sunrise is at 07:09 and sunset at 16:12 JST.
Sunshine
The average sunshine in December is 1.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 1 in December suggests the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 6min
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 42min
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).
