December weather forecast
Katsuragi, Japan

December

Weather in December

The first month of the winter, December, is also a frosty month in Katsuragi, Japan, with an average temperature ranging between max 9°C (48.2°F) and min 2.7°C (36.9°F).

Temperature

A shift in the average high-temperature occurs in December, reducing from a moderate 15°C (59°F) in November to a chilly 9°C (48.2°F). During the month of December, Katsuragi anticipates a mean low-temperature of 2.7°C (36.9°F).

Humidity

In Katsuragi, Japan, the average relative humidity in December is 77%.

Rainfall

In Katsuragi, in December, during 10.1 rainfall days, 16mm (0.63") of precipitation is typically accumulated. In Katsuragi, during the entire year, the rain falls for 137.5 days and collects up to 374mm (14.72") of precipitation.

Snowfall

Months with snowfall in Katsuragi are January through March and December. December is the first month it typically snows. Throughout December, in the average 2.1 snowfall days, it receives 5mm (0.2") of snow. Throughout the year, there are 12.3 snowfall days, and 25mm (0.98") of snow is accumulated.

Daylight

December has the shortest days of the year in Katsuragi, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 06:45 and sunset at 16:46. On the last day of December, sunrise is at 07:03 and sunset at 16:56 JST.

Sunshine

In December, the average sunshine is 5h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Frequently asked questions

What is the usual temperature for Katsuragi in December?
The high-temperature, in December, in Katsuragi, records 9°C (48.2°F), while the low-temperature is 2.7°C (36.9°F). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 40°C (104°F).
What is the average humidity in December?
The average relative humidity in December is 77%.
How much does it rain in December?
In Katsuragi, during December, the rain falls for 10.1 days and regularly aggregates up to 16mm (0.63") of precipitation.
When does it start snowing?
December is the first month it typically snows. Throughout December, in the average 2.1 snowfall days, it receives 5mm (0.2") of snow.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 54min of daylight.
What is the average length of the day in December?
In December, the average day length is 9h and 53min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 06:45 and sunset at 16:46. On the last day of the month, sunrise is at 07:03 and sunset at 16:56 JST.
How long on average sun shines in December?
The average sunshine duration in December is 5h.
When is the lowest UV index?
January 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 December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat 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 - Katsuragi, Japan
Average temperature in December
Katsuragi, Japan
  • Average high temperature in December: 9°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (6.6°C).

  • Average low temperature in December: 2.7°C

The month with the highest average low temperature is August (22.9°C).
The coldest month (with the lowest average low temperature) is January (0.4°C).

Average pressure in December - Katsuragi, Japan
Average pressure in December
Katsuragi, Japan
  • Average pressure in December: 1019.2mbar

The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1008.9mbar).

Average wind speed in December - Katsuragi, Japan
Average wind speed in December
Katsuragi, Japan
  • Average wind speed in December: 8.8km/h

The windiest month (with the highest average wind speed) is January (9.3km/h).
The calmest months (with the lowest average wind speed) are June, August and September (6.2km/h).

Average humidity in December - Katsuragi, Japan
Average humidity in December
Katsuragi, Japan
  • Average humidity in December: 77%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is May (71%).

Average rainfall in December - Katsuragi, Japan
Average rainfall in December
Katsuragi, Japan
  • Average rainfall in December: 16mm

The wettest month (with the highest rainfall) is July (73mm).
The driest month (with the least rainfall) is January (14mm).

Average rainfall days in December - Katsuragi, Japan
Average rainfall days in December
Katsuragi, Japan
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in December - Katsuragi, Japan
Average snowfall in December
Katsuragi, Japan
  • Average snowfall in December: 5mm

The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December - Katsuragi, Japan
Average snowfall days in December
Katsuragi, Japan
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is February (4.8 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 - Katsuragi, Japan
Average daylight in December /
Average sunshine in December
Katsuragi, Japan
  • Average daylight in December: 9h and 5min

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 0min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in December - Katsuragi, Japan
Average sunshine days in December
Katsuragi, Japan
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is May (19.9 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in December - Katsuragi, Japan
Average UV index in December
Katsuragi, 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 and December (UV index 2).

Average cloud cover in December - Katsuragi, Japan
Average cloud cover in December
Katsuragi, Japan
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December - Katsuragi, Japan
Average visibility in December
Katsuragi, Japan
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May, August, November and December (9km).
The months with the lowest visibility are June, July, September and October (8km).

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