December weather forecast
Karumai, Japan

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Weather in December

The first month of the winter, December, is still a cold month in Karumai, Japan, with temperature in the range of an average low of -0.1°C (31.8°F) and an average high of 3.8°C (38.8°F).

Temperature

As December begins, there is a decrease in the average high-temperature, falling from a fresh 10.5°C (50.9°F) in November to a wintry 3.8°C (38.8°F). Nights in December cool down, indicating a minor disparity from daytime highs with an average low-temperature of -0.1°C (31.8°F).

Humidity

The average relative humidity in December in Karumai is 76%.

Rainfall

In Karumai, in December, during 11.5 rainfall days, 49mm (1.93") of precipitation is typically accumulated. Throughout the year, there are 155.9 rainfall days, and 725mm (28.54") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Karumai. In Karumai, in December, snow falls for 15.5 days, with typically accumulated 162mm (6.38") of snow. In Karumai, during the entire year, snow falls for 67.1 days and aggregates up to 669mm (26.34") of snow.

Daylight

The month with the shortest days in Karumai, Japan, is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 06:37 and sunset at 16:08. On the last day of December, in Karumai, Japan, sunrise is at 06:56 and sunset at 16:17 JST.

Sunshine

In Karumai, the average sunshine in December is 4.1h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 1 in December transforms into the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

Is December cold in Karumai?

The high-temperature in Karumai, Japan, during December is 3.8°C (38.8°F) and the low-temperature is -0.1°C (31.8°F).

What is the average humidity in December in Karumai?

In Karumai, the average relative humidity in December is 76%.

How much does it rain in Karumai in December?

In Karumai, in December, it is raining for 11.5 days, with typically 49mm (1.93") of accumulated precipitation.

How many days does it snow in December in Karumai?

In Karumai, Japan, in December, snow falls for 15.5 days, with typically accumulated 162mm (6.38") of snow.

What is the month with the shortest days in Karumai?

December has the shortest days of the year in Karumai, with an average of 9h and 24min of daylight.

How many hours of daylight does Karumai have in December?

In December, the average day length is 9h and 22min.

When is the sunrise / sunset in December in Karumai?

On the first day of December, sunrise is at 06:37 and sunset at 16:08. On the last day of the month, sunrise is at 06:56 and sunset at 16:17 JST.

How long on average sun shines in December in Karumai?

In Karumai, the average sunshine duration in December is 4.1h.

When is the lowest UV index in Karumai?

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

How high is the UV index in December in Karumai?

In December, the average daily maximum UV index in Karumai is 1. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.

Average temperature in December
Karumai, Japan

Average temperature in December - Karumai, Japan
  • Average high temperature in December: 3.8°C

The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (0.9°C).

  • Average low temperature in December: -0.1°C

The month with the highest average low temperature is August (19.9°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).

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Average pressure in December
Karumai, Japan

Average pressure in December - Karumai, Japan
  • Average pressure in December: 1014.3mbar

The month with the highest atmospheric pressure is November (1017.3mbar).
The month with the lowest atmospheric pressure is July (1009.1mbar).

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Average wind speed in December
Karumai, Japan

Average wind speed in December - Karumai, Japan
  • Average wind speed in December: 19.3km/h

The windiest month (with the highest average wind speed) is December (19.3km/h).
The calmest month (with the lowest average wind speed) is July (9.9km/h).

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Average humidity in December
Karumai, Japan

Average humidity in December - Karumai, Japan
  • Average humidity in December: 76%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in December
Karumai, Japan

Average rainfall in December - Karumai, Japan
  • Average rainfall in December: 49mm

The wettest month (with the highest rainfall) is July (108mm).
The driest month (with the least rainfall) is November (29mm).

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Average rainfall days in December
Karumai, Japan

Average rainfall days in December - Karumai, Japan
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall in December
Karumai, Japan

Average snowfall in December - Karumai, Japan
  • Average snowfall in December: 162mm

The month with the highest snowfall is January (171mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in December
Karumai, Japan

Average snowfall days in December - Karumai, Japan
  • Average snowfall days in December: 15.5 days

The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Karumai, Japan
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is May (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in December
Karumai, Japan

Average sunshine days in December - Karumai, Japan
  • Average sunshine days in December: 7.2 days

The month with the most sunshine days is May (17.6 days).
The month with the least sunshine days is January (6.7 days).

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Average UV index in December
Karumai, Japan

Average UV index in December - Karumai, Japan
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in December
Karumai, Japan

Average cloud cover in December - Karumai, Japan
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are May and October (Cloud cover 37).

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Average visibility in December
Karumai, Japan

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

The months with the highest visibility are October and November (10km).
The month with the lowest visibility is July (8km).

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Karumai, Japan

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