December weather forecastAnnaka, Japan

December

Weather in December

December, the first month of the winter in Annaka, is still a chilly month, with an average temperature varying between 6.2°C (43.2°F) and -0.9°C (30.4°F).

Temperature

December indicates a shift in the average high-temperature, from November's cool 12.3°C (54.1°F) to a frosty 6.2°C (43.2°F). An average low-temperature of -0.9°C (30.4°F) is anticipated throughout the nights in Annaka, Japan, during December.

Humidity

In December, the average relative humidity is 71%.

Rainfall

The month with the least rainfall in Annaka is December, when the rain falls for 8 days and typically collects 19mm (0.75") of precipitation.

Snowfall

January through April, November and December are months with snowfall in Annaka. In Annaka, during December, snow falls for 1.5 days and regularly aggregates up to 8mm (0.31") of snow. Throughout the year, there are 14.1 snowfall days, and 172mm (6.77") 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 December in Annaka, sunrise is at 06:37 and sunset at 16:29. On the last day of the month, sunrise is at 06:55 and sunset at 16:39 JST.

Sunshine

In December, the average sunshine in Annaka is 6.9h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Annaka, Japan. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.

Frequently asked questions

Annaka in December has an average high-temperature of 6.2°C (43.2°F) and an average low-temperature of -0.9°C (30.4°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 33°C (91.4°F).

The average relative humidity in December in Annaka is 71%.

The month with the least rainfall in Annaka is December, when the rain falls for 8 days and typically collects 19mm (0.75") of precipitation.

In December, in Annaka, Japan, the rain falls for 8 days. Throughout December, 19mm (0.75") of precipitation is accumulated.

In Annaka, Japan, in December, during 1.5 snowfall days, 8mm (0.31") of snow is typically accumulated.

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

The average day length in December in Annaka, Japan, is 9h and 44min.

In December, on the first day of the month, sunrise is at 06:37 and sunset at 16:29. On the last day of the month, in Annaka, Japan, sunrise is at 06:55 and sunset at 16:39 JST.

In December, the average sunshine duration is 6.9h.

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

In December, the average daily maximum UV index is 2. A UV Index value 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Annaka, Japan

  • Average high temperature in December: 6.2°C

The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (3.4°C).

  • Average low temperature in December: -0.9°C

The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).

Average pressure in December
Annaka, Japan

  • Average pressure in December: 1017.1mbar

The month with the highest atmospheric pressure is November (1018.8mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in December
Annaka, Japan

  • Average wind speed in December: 9.2km/h

The windiest month (with the highest average wind speed) is January (10km/h).
The calmest month (with the lowest average wind speed) is July (5.4km/h).

Average humidity in December
Annaka, Japan

  • Average humidity in December: 71%

The months with the highest relative humidity are July and September (81%).
The months with the lowest relative humidity are March and April (70%).

Average rainfall in December
Annaka, Japan

  • Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is July (149mm).
The driest month (with the least rainfall) is December (19mm).

Average rainfall days in December
Annaka, Japan

  • Average rainfall days in December: 8 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is February (5.9 days).

Average snowfall in December
Annaka, Japan

  • Average snowfall in December: 8mm

The month with the highest snowfall is February (72mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December
Annaka, Japan

  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (5.6 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
Annaka, 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: 6h and 54min

The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in December
Annaka, Japan

  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (4.5 days).

Average UV index in December
Annaka, Japan

  • Average UV index in December: 2

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

Average cloud cover in December
Annaka, Japan

  • Average cloud cover in December: 27

The months with the most cloud cover are June and July (Cloud cover 47).
The months with the least cloud cover are November and December (Cloud cover 27).

Average visibility in December
Annaka, Japan

  • Average visibility in December: 10km

The months with the highest visibility are January and December (10km).
The months with the lowest visibility are June, July, August, September and October (8km).