December weather forecastYachimata, Japan
December weather for Yachimata, Japan: The first month of the winter, December, is still a cool month in Yachimata, Japan, with an average temperature ranging between max 11.7°C (53.1°F) and min 7.2°C (45°F). The months with the lowest UV index in Yachimata, Japan, are January through March and December, with an average maximum UV index of 3.
December
Weather in December
The first month of the winter, December, is still a cool month in Yachimata, Japan, with an average temperature ranging between max 11.7°C (53.1°F) and min 7.2°C (45°F).Temperature
The shift from November to December corresponds with a decrease in the average high-temperature, down to a cool 11.7°C (53.1°F) from a comfortable 16.7°C (62.1°F). During the month of December, Yachimata identifies an average nighttime low-temperature of 7.2°C (45°F), slightly lower than its daytime counterpart.Humidity
In Yachimata, the average relative humidity in December is 64%.Rainfall
In Yachimata, in December, it is raining for 12.5 days, with typically 54mm (2.13") of accumulated precipitation. Throughout the year, in Yachimata, Japan, there are 191.3 rainfall days, and 1095mm (43.11") of precipitation is accumulated.Snowfall
In Yachimata, snow does not fall in March through December.Daylight
December has the shortest days of the year in Yachimata, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 06:29 and sunset at 16:25. On the last day of December, in Yachimata, sunrise is at 06:48 and sunset at 16:35 JST.
Sunshine
In Yachimata, the average sunshine in December is 5.9h.UV index
January through March and December, with an average maximum UV index of 3, are months with the lowest UV index in Yachimata. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 3 in December leads to these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Yachimata, Japan
- Average high temperature in December: 11.7°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in December: 7.2°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (4.2°C).
Average pressure in December
Yachimata, Japan
- Average pressure in December: 1015.9mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in December
Yachimata, Japan
- Average wind speed in December: 15.7km/h
The windiest month (with the highest average wind speed) is March (17.7km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity in December
Yachimata, Japan
- Average humidity in December: 64%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (61%).
Average rainfall in December
Yachimata, Japan
- Average rainfall in December: 54mm
The wettest month (with the highest rainfall) is October (149mm).
The driest month (with the least rainfall) is January (50mm).
Average rainfall days in December
Yachimata, Japan
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Yachimata, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Yachimata, Japan
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Yachimata, Japan
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in December
Yachimata, Japan
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is January (18.8 days).
The months with the least sunshine days are June and September (7.9 days).
Average UV index in December
Yachimata, Japan
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).
Average cloud cover in December
Yachimata, Japan
- Average cloud cover in December: 33
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in December
Yachimata, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
