December weather forecast
Izena, Japan

December

Weather in December

The first month of the winter, December, is also an agreeable month in Izena, Japan, with an average temperature varying between 20.3°C (68.5°F) and 18.4°C (65.1°F).

Temperature

The onset of December aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 23.5°C (74.3°F) in November to a pleasant 20.3°C (68.5°F). Izena encounters a small divergence from daytime high temperatures, averaging a low-temperature of 18.4°C (65.1°F) during December nights.

Humidity

The months with the lowest humidity are January and December, with an average relative humidity of 72%.

Rainfall

In Izena, in December, it is raining for 20.9 days, with typically 85mm (3.35") of accumulated precipitation. Throughout the year, in Izena, there are 240.8 rainfall days, and 1563mm (61.54") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Izena, with an average of 10h and 30min of daylight.
On the first day of the month, sunrise is at 07:00 and sunset at 17:34. On the last day of December, sunrise is at 07:16 and sunset at 17:45 JST.

Sunshine

The average sunshine in December in Izena is 4.2h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 4 in December, converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

What is the average December temperature in Izena?
Izena in December has an average high-temperature of 20.3°C (68.5°F) and an average low-temperature of 18.4°C (65.1°F). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 33°C (91.4°F).
What is the least humid month in Izena?
January and December, with an average relative humidity of 72%, are the least humid months in Izena, Japan.
What is the average humidity in December in Izena?
The average relative humidity in December in Izena, Japan, is 72%.
How much does it rain in Izena in December?
In Izena, during December, the rain falls for 20.9 days and regularly aggregates up to 85mm (3.35") of precipitation.
What is the month with the shortest days in Izena?
With an average of 10h and 30min of daylight, December has the shortest days of the year.
What is the average length of the day in December in Izena?
In Izena, the average day length in December is 10h and 29min.
When are sunrise and sunset in December in Izena?
In December, on the first day of the month, sunrise is at 07:00 and sunset at 17:34. On the last day of the month, in Izena, sunrise is at 07:16 and sunset at 17:45 JST.
How many hours of sunshine does Izena have in December?
The average sunshine duration in December is 4.2h.
What is the month with the lowest UV index in Izena?
The months with the lowest UV index in Izena, Japan, are January and December, with an average maximum UV index of 4.
What is the UV index intensity in December in Izena?
In December, the average daily maximum UV index in Izena is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Izena, Japan
Average temperature in December
Izena, Japan
  • Average high temperature in December: 20.3°C

The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (18.6°C).

  • Average low temperature in December: 18.4°C

The month with the highest average low temperature is August (28°C).
The coldest month (with the lowest average low temperature) is January (16.7°C).

Average pressure in December - Izena, Japan
Average pressure in December
Izena, Japan
  • Average pressure in December: 1020.2mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).

Average wind speed in December - Izena, Japan
Average wind speed in December
Izena, Japan
  • Average wind speed in December: 28.3km/h

The windiest month (with the highest average wind speed) is December (28.3km/h).
The calmest month (with the lowest average wind speed) is May (20.2km/h).

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

The month with the highest relative humidity is June (86%).
The months with the lowest relative humidity are January and December (72%).

Average rainfall in December - Izena, Japan
Average rainfall in December
Izena, Japan
  • Average rainfall in December: 85mm

The wettest month (with the highest rainfall) is June (241mm).
The driest month (with the least rainfall) is January (64mm).

Average rainfall days in December - Izena, Japan
Average rainfall days in December
Izena, Japan
  • Average rainfall days in December: 20.9 days

The month with the highest number of rainy days is June (23.3 days).
The month with the least rainy days is November (17.6 days).

Average daylight in December / Average sunshine in December - Izena, Japan
Average daylight in December /
Average sunshine in December
Izena, Japan
  • Average daylight in December: 10h and 3min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December - Izena, Japan
Average sunshine days in December
Izena, Japan
  • Average sunshine days in December: 6.7 days

The months with the most sunshine days are April and May (9.6 days).
The month with the least sunshine days is September (3.8 days).

Average UV index in December - Izena, Japan
Average UV index in December
Izena, Japan
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

Average cloud cover in December - Izena, Japan
Average cloud cover in December
Izena, Japan
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 35).

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

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

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