December weather forecast
Yotsutsuji, Japan

December

Weather in December

The first month of the winter, December, is also a frosty month in Yotsutsuji, Japan, with an average temperature ranging between min 2.9°C (37.2°F) and max 8.5°C (47.3°F).

Temperature

The onset of December brings a small change in high-temperatures, falling from a mild 14.5°C (58.1°F) in November to a chilly 8.5°C (47.3°F). During December, Yotsutsuji witnesses a consistent average low-temperature of 2.9°C (37.2°F).

Humidity

The average relative humidity in December in Yotsutsuji is 82%.

Rainfall

In Yotsutsuji, in December, it is raining for 19.9 days, with typically 78mm (3.07") of accumulated precipitation. In Yotsutsuji, during the entire year, the rain falls for 218.1 days and collects up to 1253mm (49.33") of precipitation.

Snowfall

Months with snowfall in Yotsutsuji are January through March and December. December is the first month it typically snows. Throughout December, in the average 5.6 snowfall days, it receives 91mm (3.58") of snow. In Yotsutsuji, during the entire year, snow falls for 33.6 days and aggregates up to 497mm (19.57") of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 06:50 and sunset at 16:46. On the last day of the month, sunrise is at 07:08 and sunset at 16:56 JST.

Sunshine

The average sunshine in December is 4h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Yotsutsuji. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.

Frequently asked questions

What are December temperatures in Yotsutsuji?
In Yotsutsuji, in December, the average high-temperature is 8.5°C (47.3°F), and the average low-temperature is 2.9°C (37.2°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 40°C (104°F).
What is the average humidity in December in Yotsutsuji?
In December, the average relative humidity in Yotsutsuji, Japan, is 82%.
How many days does it rain in December in Yotsutsuji?
In Yotsutsuji, Japan, in December, during 19.9 rainfall days, 78mm (3.07") of precipitation is typically accumulated.
When does it start snowing in Yotsutsuji?
December is the first month it typically snows in Yotsutsuji, Japan. Throughout December, in the average 5.6 snowfall days, it receives 91mm (3.58") of snow.
What is the month with the shortest days in Yotsutsuji?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
What is the average length of the day in December in Yotsutsuji?
In December, the average day length in Yotsutsuji is 9h and 49min.
What time are sunrise and sunset in December in Yotsutsuji?
In December, on the first day of the month, sunrise is at 06:50 and sunset at 16:46. On the last day of the month, in Yotsutsuji, Japan, sunrise is at 07:08 and sunset at 16:56 JST.
How many hours of sunshine does Yotsutsuji have in December?
The average sunshine duration in December in Yotsutsuji, Japan, is 4h.
What are the months with the lowest UV index in Yotsutsuji?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the UV index intensity in December in Yotsutsuji?
In Yotsutsuji, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Yotsutsuji, Japan
  • Average high temperature in December: 8.5°C

The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (6°C).

  • Average low temperature in December: 2.9°C

The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is January (0.6°C).

Average pressure in December
Yotsutsuji, Japan
  • Average pressure in December: 1019.4mbar

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
Yotsutsuji, Japan
  • Average wind speed in December: 11.1km/h

The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest months (with the lowest average wind speed) are June and August (7km/h).

Average humidity in December
Yotsutsuji, Japan
  • Average humidity in December: 82%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are April and May (77%).

Average rainfall in December
Yotsutsuji, Japan
  • Average rainfall in December: 78mm

The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is November (55mm).

Average rainfall days in December
Yotsutsuji, Japan
  • Average rainfall days in December: 19.9 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is May (15 days).

Average snowfall in December
Yotsutsuji, Japan
  • Average snowfall in December: 91mm

The month with the highest snowfall is January (204mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Yotsutsuji, Japan
  • Average snowfall days in December: 5.6 days

The month with the highest number of snowfall days is January (13.2 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
Yotsutsuji, Japan
  • Average daylight in December: 9h and 5min

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: 4h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in December
Yotsutsuji, Japan
  • Average sunshine days in December: 6.5 days

The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is January (3.8 days).

Average UV index in December
Yotsutsuji, Japan
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Yotsutsuji, Japan
  • Average cloud cover in December: 55

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
Yotsutsuji, Japan
  • Average visibility in December: 9km

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

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