December weather forecast
Koyanose, Japan

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Weather in December

December, the first month of the winter in Koyanose, is still a cool month, with temperature in the range of an average low of 6.5°C (43.7°F) and an average high of 10.5°C (50.9°F).

Temperature

Koyanose's transition into December involves a shift in temperature, receding from a comfortable 16.3°C (61.3°F) in November to a fresh 10.5°C (50.9°F). In December, Koyanose experiences a marginal drop in temperature, with averages of 6.5°C (43.7°F) at night.

Humidity

In December, the average relative humidity in Koyanose is 72%.

Rainfall

In December, the rain falls for 18.6 days. Throughout December, 69mm (2.72") of precipitation is accumulated. In Koyanose, during the entire year, the rain falls for 186.7 days and collects up to 1009mm (39.72") of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 2.7 snowfall days, it receives 12mm (0.47") of snow. Throughout the year, there are 12.3 snowfall days, and 60mm (2.36") of snow is accumulated.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Koyanose.
On the first day of December in Koyanose, sunrise is at 07:03 and sunset at 17:08. On the last day of the month, sunrise is at 07:21 and sunset at 17:18 JST.

Sunshine

In Koyanose, the average sunshine in December is 4.3h.

UV index

The months with the lowest UV index in Koyanose are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the temperature in December in Koyanose?

The high-temperature in Koyanose, Japan, during December is 10.5°C (50.9°F) and the low-temperature is 6.5°C (43.7°F). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 38°C (100.4°F).

What is the average humidity in December in Koyanose?

The average relative humidity in December in Koyanose is 72%.

How many days does it rain in December in Koyanose?

In Koyanose, Japan, in December, it is raining for 18.6 days, with typically 69mm (2.72") of accumulated precipitation.

When does it start snowing in Koyanose?

December is the first month it typically snows. Throughout December, in the average 2.7 snowfall days, it receives 12mm (0.47") of snow.

What is the month with the shortest days in Koyanose?

December has the shortest days of the year, with an average of 10h and 0min of daylight.

What is the average length of the day in December in Koyanose?

The average day length in December in Koyanose is 9h and 58min.

What time are sunrise and sunset in December in Koyanose?

On the first day of December, sunrise is at 07:03 and sunset at 17:08. On the last day of the month, sunrise is at 07:21 and sunset at 17:18 JST.

How long on average sun shines in December in Koyanose?

In December, the average sunshine duration in Koyanose is 4.3h.

When is the lowest UV index in Koyanose?

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

How high is the UV index in December in Koyanose?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Koyanose, Japan

Average temperature in December - Koyanose, Japan
  • Average high temperature in December: 10.5°C

The warmest month (with the highest average high temperature) is August (30.2°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in December: 6.5°C

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).

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Average pressure in December
Koyanose, Japan

Average pressure in December - Koyanose, Japan
  • Average pressure in December: 1021.4mbar

The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).

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Average wind speed in December
Koyanose, Japan

Average wind speed in December - Koyanose, Japan
  • Average wind speed in December: 14.7km/h

The windiest months (with the highest average wind speed) are January and December (14.7km/h).
The calmest month (with the lowest average wind speed) is June (9.3km/h).

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Average humidity in December
Koyanose, Japan

Average humidity in December - Koyanose, Japan
  • Average humidity in December: 72%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in December
Koyanose, Japan

Average rainfall in December - Koyanose, Japan
  • Average rainfall in December: 69mm

The wettest month (with the highest rainfall) is July (193mm).
The driest month (with the least rainfall) is January (50mm).

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Average rainfall days in December
Koyanose, Japan

Average rainfall days in December - Koyanose, Japan
  • Average rainfall days in December: 18.6 days

The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is May (11.4 days).

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Average snowfall in December
Koyanose, Japan

Average snowfall in December - Koyanose, Japan
  • Average snowfall in December: 12mm

The month with the highest snowfall is January (31mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in December
Koyanose, Japan

Average snowfall days in December - Koyanose, Japan
  • Average snowfall days in December: 2.7 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December / Average sunshine in December - Koyanose, Japan
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 4h and 2min

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 6min).

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Average sunshine days in December
Koyanose, Japan

Average sunshine days in December - Koyanose, Japan
  • Average sunshine days in December: 8.2 days

The month with the most sunshine days is May (18.4 days).
The month with the least sunshine days is July (6.9 days).

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Average UV index in December
Koyanose, Japan

Average UV index in December - Koyanose, 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).

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Average cloud cover in December
Koyanose, Japan

Average cloud cover in December - Koyanose, Japan
  • Average cloud cover in December: 53

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in December
Koyanose, Japan

Average visibility in December - Koyanose, Japan
  • Average visibility in December: 10km

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

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Koyanose, Japan

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