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
December
Weather in December
Temperature
The onset of December entails a temperature shift, as the average high-temperature decreases from a fresh 12.5°C (54.5°F) in November to a chilly 6.4°C (43.5°F). December's average low-temperature in Tomiya is a wintry 1.5°C (34.7°F), reflecting a minor difference from the day's peak temperatures.Humidity
The average relative humidity in December is 76%.Rainfall
In Tomiya, in December, during 9.5 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, in Tomiya, there are 152.2 rainfall days, and 720mm (28.35") of precipitation is accumulated.Snowfall
January through April and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 4.3 snowfall days, it receives 22mm (0.87") of snow. Throughout the year, in Tomiya, there are 27.1 snowfall days, and 195mm (7.68") of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Tomiya, sunrise is at 06:34 and sunset at 16:16. On the last day of the month, sunrise is at 06:53 and sunset at 16:25 JST.
Sunshine
The average sunshine in December in Tomiya is 5.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Tomiya?
What is the average humidity in December in Tomiya?
How much does it rain in Tomiya in December?
When does it start to snow in Tomiya?
What is the month with the shortest days in Tomiya?
How many hours of daylight does Tomiya have in December?
What time are sunrise and sunset in December in Tomiya?
How long on average sun shines in December in Tomiya?
What is the month with the lowest UV index in Tomiya?
What is the UV index intensity in December in Tomiya?
Average temperature in December
Tomiya, Japan
- Average high temperature in December: 6.4°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in December: 1.5°C
The month with the highest average low temperature is August (21.4°C).
The coldest months (with the lowest average low temperature) are January and February (-1.7°C).
Average pressure in December
Tomiya, Japan
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Tomiya, Japan
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is July (8.1km/h).
Average humidity in December
Tomiya, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Tomiya, Japan
- Average rainfall in December: 27mm
The wettest months (with the highest rainfall) are July and October (111mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in December
Tomiya, Japan
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Tomiya, Japan
- Average snowfall in December: 22mm
The month with the highest snowfall is February (63mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Tomiya, Japan
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Tomiya, Japan
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Tomiya, Japan
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Tomiya, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Tomiya, Japan
- Average cloud cover in December: 43
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is May (Cloud cover 36).
Average visibility in December
Tomiya, Japan
- Average visibility in December: 10km
The months with the highest visibility are October, November and December (10km).
The month with the lowest visibility is July (8km).
