December weather forecastHamatonbetsu, Japan
December
Weather in December
December, the first month of the winter in Hamatonbetsu, is also a subzero cold month, with temperature in the range of an average high of -1.3°C (29.7°F) and an average low of -4.7°C (23.5°F).Temperature
December indicates a shift in the average high-temperature, from November's icy 4.6°C (40.3°F) to a subzero cold -1.3°C (29.7°F). In Hamatonbetsu, the nighttime temperature in December descends gently to an average of -4.7°C (23.5°F).Humidity
The average relative humidity in December is 83%.Rainfall
In Hamatonbetsu, in December, during 5.8 rainfall days, 76mm (2.99") of precipitation is typically accumulated. Throughout the year, there are 144.9 rainfall days, and 802mm (31.57") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 23.1 days and accumulates 300mm (11.81") of snow.Daylight
December has the shortest days of the year in Hamatonbetsu, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 06:48 and sunset at 15:50. On the last day of December, sunrise is at 07:09 and sunset at 15:58 JST.
Sunshine
The average sunshine in December is 1.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 transforms into these recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hamatonbetsu, Japan
- Average high temperature in December: -1.3°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The months with the lowest average high temperature are January and February (-3.9°C).
- Average low temperature in December: -4.7°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (-8.6°C).
Average pressure in December
Hamatonbetsu, Japan
- Average pressure in December: 1011mbar
The month with the highest atmospheric pressure is October (1014.6mbar).
The month with the lowest atmospheric pressure is July (1008.5mbar).
Average wind speed in December
Hamatonbetsu, Japan
- Average wind speed in December: 19.3km/h
The windiest month (with the highest average wind speed) is December (19.3km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).
Average humidity in December
Hamatonbetsu, Japan
- Average humidity in December: 83%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Hamatonbetsu, Japan
- Average rainfall in December: 76mm
The wettest month (with the highest rainfall) is August (122mm).
The driest months (with the least rainfall) are February and April (44mm).
Average rainfall days in December
Hamatonbetsu, Japan
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Hamatonbetsu, Japan
- Average snowfall in December: 300mm
The month with the highest snowfall is December (300mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Hamatonbetsu, Japan
- Average snowfall days in December: 23.1 days
The month with the highest number of snowfall days is January (25.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hamatonbetsu, Japan
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 1h and 48min
The months with the most sunshine are April and May (Average sunshine: 7h and 42min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).
Average sunshine days in December
Hamatonbetsu, Japan
- Average sunshine days in December: 3.5 days
The month with the most sunshine days is May (12.9 days).
The month with the least sunshine days is December (3.5 days).
Average UV index in December
Hamatonbetsu, 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, November and December (UV index 1).
Average cloud cover in December
Hamatonbetsu, Japan
- Average cloud cover in December: 82
The month with the most cloud cover is January (Cloud cover 87).
The month with the least cloud cover is September (Cloud cover 42).
Average visibility in December
Hamatonbetsu, Japan
- Average visibility in December: 7km
The months with the highest visibility are April, May, September and October (9km).
The months with the lowest visibility are January, February and December (7km).
