December weather forecastKatakake, Japan

December

Weather in December

December, the first month of the winter in Katakake, is also a wintry month, with an average temperature fluctuating between 5.7°C (42.3°F) and 0.8°C (33.4°F).

Temperature

A change in temperatures is noted as November gives way to December, with average highs reducing from a fresh 12°C (53.6°F) to a wintry 5.7°C (42.3°F). Katakake's average temperature throughout the nights in December exhibits a minor decrease from daytime highs, stabilizing at a still icy 0.8°C (33.4°F).

Humidity

The average relative humidity in December in Katakake is 81%.

Rainfall

In Katakake, during December, the rain falls for 21.5 days and regularly aggregates up to 161mm (6.34") of precipitation. Throughout the year, in Katakake, there are 218.8 rainfall days, and 1305mm (51.38") of precipitation is accumulated.

Snowfall

January through April and December are months with snowfall in Katakake. December is the first month it typically snows. Throughout December, in the average 10.3 snowfall days, it receives 322mm (12.68") of snow. Throughout the year, there are 48 snowfall days, and 1270mm (50") of snow is accumulated.

Daylight

With an average of 9h and 42min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:44 and sunset at 16:35. On the last day of December, in Katakake, sunrise is at 07:02 and sunset at 16:45 JST.

Sunshine

In December, the average sunshine is 3.8h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Katakake. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.

Frequently asked questions

An average high-temperature, in December, in Katakake, is 5.7°C (42.3°F) and the average low-temperature is 0.8°C (33.4°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in August is evaluated at 32°C (89.6°F).

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

In Katakake, in December, during 21.5 rainfall days, 161mm (6.34") of precipitation is typically accumulated.

December is the first month it typically snows in Katakake, Japan. Throughout December, in the average 10.3 snowfall days, it receives 322mm (12.68") of snow.

December has the shortest days of the year, with an average of 9h and 42min of daylight.

The average day length in December in Katakake, Japan, is 9h and 43min.

On the first day of December in Katakake, sunrise is at 06:44 and sunset at 16:35. On the last day of the month, sunrise is at 07:02 and sunset at 16:45 JST.

In December, the average sunshine duration in Katakake is 3.8h.

The months with the lowest UV index in Katakake are January and December, with an average maximum UV index of 1.

The average daily maximum UV index in December in Katakake is 1. 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
Katakake, Japan

  • Average high temperature in December: 5.7°C

The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (2.6°C).

  • Average low temperature in December: 0.8°C

The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).

Average pressure in December
Katakake, Japan

  • Average pressure in December: 1018.1mbar

The months with the highest atmospheric pressure are February and November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Katakake, Japan

  • Average wind speed in December: 12km/h

The windiest month (with the highest average wind speed) is December (12km/h).
The calmest months (with the lowest average wind speed) are June and August (7.4km/h).

Average humidity in December
Katakake, Japan

  • Average humidity in December: 81%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is May (71%).

Average rainfall in December
Katakake, Japan

  • Average rainfall in December: 161mm

The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is May (64mm).

Average rainfall days in December
Katakake, Japan

  • Average rainfall days in December: 21.5 days

The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is May (14.4 days).

Average snowfall in December
Katakake, Japan

  • Average snowfall in December: 322mm

The month with the highest snowfall is January (469mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Katakake, Japan

  • Average snowfall days in December: 10.3 days

The month with the highest number of snowfall days is January (17.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Katakake, Japan

  • Average daylight in December: 9h and 42min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 3h and 48min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Katakake, Japan

  • Average sunshine days in December: 4 days

The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is January (3.5 days).

Average UV index in December
Katakake, Japan

  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Katakake, Japan

  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 33).

Average visibility in December
Katakake, Japan

  • Average visibility in December: 9km

The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).