December weather forecastSoja, Japan

December

Weather in December

The first month of the winter, December, is still a chilly month in Soja, Japan, with an average temperature ranging between max 9°C (48.2°F) and min 3.5°C (38.3°F).

Temperature

December weather is marked by a drop in the average high-temperature, falling from a moderate 15°C (59°F) in November to a chilly 9°C (48.2°F). An average minimum temperature of 3.5°C (38.3°F) is recorded during the month of December.

Humidity

The average relative humidity in December is 77%.

Rainfall

In Soja, during December, the rain falls for 11.5 days and regularly aggregates up to 20mm (0.79") of precipitation. Throughout the year, there are 148 rainfall days, and 439mm (17.28") of precipitation is accumulated.

Snowfall

Months with snowfall in Soja are January through March and December. December is the first month it typically snows in Soja, Japan. Throughout December, in the average 2.2 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Soja, there are 10.8 snowfall days, and 25mm (0.98") of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December in Soja, sunrise is at 06:53 and sunset at 16:54. On the last day of the month, sunrise is at 07:11 and sunset at 17:04 JST.

Sunshine

January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index in Soja are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 2 in December translates into these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Enhance your sun protection with tightly woven, yet airy clothing. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

The high-temperature, in December, in Soja, is 9°C (48.2°F), while the low-temperature averages to 3.5°C (38.3°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 39°C (102.2°F).

The average relative humidity in December in Soja is 77%.

In December, in Soja, Japan, the rain falls for 11.5 days. Throughout December, 20mm (0.79") of precipitation is accumulated.

December is the first month it typically snows in Soja. Throughout December, in the average 2.2 snowfall days, it receives 3mm (0.12") of snow.

With an average of 9h and 54min of daylight, December has the shortest days of the year in Soja, Japan.

The average day length in December in Soja is 9h and 53min.

In December, on the first day of the month, sunrise is at 06:53 and sunset at 16:54. On the last day of the month, in Soja, Japan, sunrise is at 07:11 and sunset at 17:04 JST.

The months with the least sunshine in Soja are January, February and December, with an average of 5.1h of sunshine.

In December, the average sunshine duration is 5.1h.

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

In Soja, Japan, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
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
Soja, Japan

  • Average high temperature in December: 9°C

The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (6.9°C).

  • Average low temperature in December: 3.5°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1°C).

Average pressure in December
Soja, Japan

  • Average pressure in December: 1020.1mbar

The months with the highest atmospheric pressure are January and February (1020.5mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

Average wind speed in December
Soja, Japan

  • Average wind speed in December: 11.4km/h

The windiest month (with the highest average wind speed) is January (11.6km/h).
The calmest month (with the lowest average wind speed) is June (7km/h).

Average humidity in December
Soja, Japan

  • Average humidity in December: 77%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is May (71%).

Average rainfall in December
Soja, Japan

  • Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is July (81mm).
The driest month (with the least rainfall) is November (12mm).

Average rainfall days in December
Soja, Japan

  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.6 days).

Average snowfall in December
Soja, Japan

  • Average snowfall in December: 3mm

The month with the highest snowfall is February (11mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Soja, Japan

  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is January (4.5 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
Soja, Japan

  • Average daylight in December: 9h and 54min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 6min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

Average sunshine days in December
Soja, Japan

  • Average sunshine days in December: 16.5 days

The month with the most sunshine days is May (18.9 days).
The month with the least sunshine days is July (7.3 days).

Average UV index in December
Soja, 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
Soja, Japan

  • Average cloud cover in December: 41

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Soja, Japan

  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, August, October, November and December (10km).
The months with the lowest visibility are April, May, June, July and September (9km).