December weather forecastYashiro, Japan

December

Weather in December

December, the first month of the winter in Yashiro, is also a frosty month, with an average temperature ranging between min 1.9°C (35.4°F) and max 8.7°C (47.7°F).

Temperature

December's onset brings a slight change in high-temperatures, falling from a mild 14.9°C (58.8°F) in November to a frosty 8.7°C (47.7°F). December's nights observe an average temperature of 1.9°C (35.4°F).

Humidity

In Yashiro, the average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 11.9 days. Throughout December, 46mm (1.81") of precipitation is accumulated. In Yashiro, Japan, during the entire year, the rain falls for 163.2 days and collects up to 968mm (38.11") of precipitation.

Snowfall

January through March and December are months with snowfall in Yashiro. December is the first month it typically snows in Yashiro. Throughout December, in the average 2.1 snowfall days, it receives 24mm (0.94") of snow. Throughout the year, in Yashiro, there are 14.7 snowfall days, and 132mm (5.2") of snow is accumulated.

Daylight

The month with the shortest days in Yashiro, Japan, is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 06:49 and sunset at 16:48. On the last day of December, sunrise is at 07:07 and sunset at 16:58 JST.

Sunshine

In December, the average sunshine is 4.6h.

UV index

The months with the lowest UV index in Yashiro are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 2 translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

In December, the average high-temperature and low-temperature in Yashiro are 8.7°C (47.7°F) and 1.9°C (35.4°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 41°C (105.8°F).

In December, the average relative humidity in Yashiro, Japan, is 81%.

In Yashiro, Japan, in December, during 11.9 rainfall days, 46mm (1.81") of precipitation is typically accumulated.

December is the first month it typically snows. Throughout December, in the average 2.1 snowfall days, it receives 24mm (0.94") of snow.

December has the shortest days of the year in Yashiro, with an average of 9h and 54min of daylight.

The average day length in December in Yashiro is 9h and 52min.

In December, on the first day of the month, sunrise is at 06:49 and sunset at 16:48. On the last day of the month, sunrise is at 07:07 and sunset at 16:58 JST.

The average sunshine duration in December in Yashiro, Japan, is 4.6h.

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Yashiro, Japan.

In Yashiro, Japan, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Yashiro, Japan

  • Average high temperature in December: 8.7°C

The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (6.6°C).

  • Average low temperature in December: 1.9°C

The month with the highest average low temperature is August (22.2°C).
The coldest month (with the lowest average low temperature) is January (0°C).

Average pressure in December
Yashiro, Japan

  • Average pressure in December: 1019.5mbar

The month with the highest atmospheric pressure is February (1020.1mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).

Average wind speed in December
Yashiro, Japan

  • Average wind speed in December: 8.1km/h

The windiest month (with the highest average wind speed) is March (9.5km/h).
The calmest month (with the lowest average wind speed) is June (7.5km/h).

Average humidity in December
Yashiro, Japan

  • Average humidity in December: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is May (75%).

Average rainfall in December
Yashiro, Japan

  • Average rainfall in December: 46mm

The wettest month (with the highest rainfall) is July (181mm).
The driest months (with the least rainfall) are January and November (34mm).

Average rainfall days in December
Yashiro, Japan

  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (10.1 days).

Average snowfall in December
Yashiro, Japan

  • Average snowfall in December: 24mm

The month with the highest snowfall is January (61mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Yashiro, Japan

  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (6.5 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
Yashiro, Japan

  • Average daylight in December: 9h and 54min

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 54min).

  • Average sunshine in December: 4h and 36min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days in December
Yashiro, Japan

  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is May (17.9 days).
The month with the least sunshine days is July (9.3 days).

Average UV index in December
Yashiro, Japan

  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Yashiro, Japan

  • Average cloud cover in December: 48

The month with the most cloud cover is July (Cloud cover 55).
The month with the least cloud cover is November (Cloud cover 41).

Average visibility in December
Yashiro, Japan

  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, November and December (9km).
The month with the lowest visibility is July (7km).