December weather forecast
Narusawa, Japan

December

Weather in December

The first month of the winter, December, is still a chilly month in Narusawa, Japan, with an average temperature fluctuating between 6.2°C (43.2°F) and -2.2°C (28°F).

Temperature

In Narusawa, the average high-temperature in December drops from a cool 12°C (53.6°F) in November to a frosty 6.2°C (43.2°F). In the month of December, the average low-temperature in Narusawa usually rests at a freezing cold -2.2°C (28°F).

Humidity

The average relative humidity in December is 72%.

Rainfall

In Narusawa, in December, it is raining for 8.5 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, in Narusawa, Japan, there are 204.8 rainfall days, and 1221mm (48.07") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Narusawa. In Narusawa, in December, snow falls for 8 days, with typically accumulated 143mm (5.63") of snow. Throughout the year, in Narusawa, there are 52.8 snowfall days, and 1038mm (40.87") of snow is accumulated.

Daylight

The month with the shortest days in Narusawa is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:35 and sunset at 16:32. On the last day of December, sunrise is at 06:54 and sunset at 16:42 JST.

Sunshine

In Narusawa, the average sunshine in December is 6.8h.

UV index

The months with the lowest UV index in Narusawa are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

Is December cold in Narusawa?
In December, in Narusawa, the average high-temperature is 6.2°C (43.2°F), and the average low-temperature is -2.2°C (28°F).
What is the average humidity in December in Narusawa?
In December, the average relative humidity in Narusawa, Japan, is 72%.
How much does it rain in Narusawa in December?
In December, in Narusawa, Japan, the rain falls for 8.5 days. Throughout December, 44mm (1.73") of precipitation is accumulated.
How much does it snow in Narusawa in December?
In December, it is snowing for 8 days. Throughout December, 143mm (5.63") of snow is accumulated.
What is the month with the shortest days in Narusawa?
December has the shortest days of the year in Narusawa, with an average of 9h and 48min of daylight.
How many hours of daylight does Narusawa have in December?
In December, the average day length is 9h and 49min.
What time are sunrise and sunset in December in Narusawa?
In December, on the first day of the month, sunrise is at 06:35 and sunset at 16:32. On the last day of the month, in Narusawa, sunrise is at 06:54 and sunset at 16:42 JST.
How many hours of sunshine does Narusawa have in December?
In December, the average sunshine duration in Narusawa, Japan, is 6.8h.
When is the lowest UV index in Narusawa?
The months with the lowest UV index in Narusawa are January through March, November and December, with an average maximum UV index of 2.
What is the UV index intensity in December in Narusawa?
In Narusawa, Japan, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Narusawa, Japan
  • Average high temperature in December: 6.2°C

The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (3.3°C).

  • Average low temperature in December: -2.2°C

The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).

Average pressure in December
Narusawa, Japan
  • Average pressure in December: 1017.2mbar

The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in December
Narusawa, Japan
  • Average wind speed in December: 7.9km/h

The windiest month (with the highest average wind speed) is January (8.3km/h).
The calmest month (with the lowest average wind speed) is August (5.5km/h).

Average humidity in December
Narusawa, Japan
  • Average humidity in December: 72%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (70%).

Average rainfall in December
Narusawa, Japan
  • Average rainfall in December: 44mm

The wettest month (with the highest rainfall) is July (206mm).
The driest month (with the least rainfall) is January (37mm).

Average rainfall days in December
Narusawa, Japan
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is August (28.5 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in December
Narusawa, Japan
  • Average snowfall in December: 143mm

The month with the highest snowfall is March (284mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Narusawa, Japan
  • Average snowfall days in December: 8 days

The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Narusawa, Japan
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is May (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).

Average sunshine days in December
Narusawa, Japan
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is December (17.8 days).
The month with the least sunshine days is July (1.7 days).

Average UV index in December
Narusawa, Japan
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Narusawa, Japan
  • Average cloud cover in December: 28

The months with the most cloud cover are June and July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 25).

Average visibility in December
Narusawa, Japan
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May, November and December (9km).
The month with the lowest visibility is September (7km).

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