December weather forecastAonohara, Japan

December

Weather in December

December, the first month of the winter in Aonohara, is also a frosty month, with an average temperature ranging between max 9.7°C (49.5°F) and min 3.8°C (38.8°F).

Temperature

Stepping into December, Aonohara observes a temperature decline, with the average high falling from November's refreshing 14.9°C (58.8°F) to a frosty 9.7°C (49.5°F). An average low-temperature of 3.8°C (38.8°F) is recorded during the nights in December in Aonohara.

Humidity

In December, the average relative humidity in Aonohara, Japan, is 67%.

Rainfall

In Aonohara, in December, it is raining for 10.4 days, with typically 50mm (1.97") of accumulated precipitation. In Aonohara, during the entire year, the rain falls for 192.3 days and collects up to 1129mm (44.45") of precipitation.

Snowfall

Months with snowfall in Aonohara are January through March, November and December. In Aonohara, in December, during 0.9 snowfall days, 2mm (0.08") of snow is typically accumulated. In Aonohara, Japan, during the entire year, snow falls for 10.6 days and aggregates up to 132mm (5.2") of snow.

Daylight

The month with the shortest days in Aonohara is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:34 and sunset at 16:30. On the last day of December, sunrise is at 06:52 and sunset at 16:40 JST.

Sunshine

In December, the average sunshine in Aonohara is 6.2h.

UV index

The months with the lowest UV index are January, February 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 exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 2 translates into these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

The average high-temperature, in December, in Aonohara, is 9.7°C (49.5°F), while the average low-temperature is 3.8°C (38.8°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 36°C (96.8°F).

In Aonohara, Japan, the average relative humidity in December is 67%.

In December, the rain falls for 10.4 days. Throughout December, 50mm (1.97") of precipitation is accumulated.

In Aonohara, in December, during 0.9 snowfall days, 2mm (0.08") of snow is typically accumulated.

The month with the shortest days is December, with an average of 9h and 48min of daylight.

In December, the average day length in Aonohara is 9h and 48min.

On the first day of December in Aonohara, Japan, sunrise is at 06:34 and sunset at 16:30. On the last day of the month, sunrise is at 06:52 and sunset at 16:40 JST.

In Aonohara, Japan, the average sunshine duration in December is 6.2h.

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

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Aonohara, Japan

  • Average high temperature in December: 9.7°C

The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (7.6°C).

  • Average low temperature in December: 3.8°C

The month with the highest average low temperature is August (23°C).
The coldest month (with the lowest average low temperature) is January (0.5°C).

Average pressure in December
Aonohara, Japan

  • Average pressure in December: 1016.5mbar

The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in December
Aonohara, Japan

  • Average wind speed in December: 10.4km/h

The windiest month (with the highest average wind speed) is April (12.7km/h).
The calmest month (with the lowest average wind speed) is November (9.9km/h).

Average humidity in December
Aonohara, Japan

  • Average humidity in December: 67%

The months with the highest relative humidity are June and July (80%).
The month with the lowest relative humidity is January (64%).

Average rainfall in December
Aonohara, Japan

  • Average rainfall in December: 50mm

The wettest month (with the highest rainfall) is October (158mm).
The driest month (with the least rainfall) is January (49mm).

Average rainfall days in December
Aonohara, Japan

  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is June (21.2 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in December
Aonohara, Japan

  • Average snowfall in December: 2mm

The month with the highest snowfall is February (69mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Aonohara, Japan

  • Average snowfall days in December: 0.9 days

The month with the highest number of snowfall days is February (4.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

  • Average daylight in December: 9h and 48min

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 12min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in December
Aonohara, Japan

  • Average sunshine days in December: 17.7 days

The month with the most sunshine days is December (17.7 days).
The month with the least sunshine days is June (6.8 days).

Average UV index in December
Aonohara, 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, February and December (UV index 2).

Average cloud cover in December
Aonohara, Japan

  • Average cloud cover in December: 31

The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 30).

Average visibility in December
Aonohara, Japan

  • Average visibility in December: 10km

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