December weather forecastAja, Japan

December

Weather in December

December, the first month of the winter in Aja, is also an agreeable month, with temperature in the range of an average high of 20.6°C (69.1°F) and an average low of 18.7°C (65.7°F).

Temperature

December heralds a minor drop in average high-temperature, sliding from November's moderately hot 24°C (75.2°F) to an agreeable 20.6°C (69.1°F). A mean low-temperature of 18.7°C (65.7°F) is anticipated during the month of December, a slight step down from the daytime high.

Humidity

In Aja, the average relative humidity in December is 73%.

Rainfall

In Aja, in December, it is raining for 20.7 days, with typically 77mm (3.03") of accumulated precipitation. In Aja, during the entire year, the rain falls for 228 days and collects up to 1405mm (55.31") of precipitation.

Daylight

December has the shortest days of the year, with an average of 10h and 30min of daylight.
On the first day of December, sunrise is at 06:59 and sunset at 17:36. On the last day of the month, sunrise is at 07:16 and sunset at 17:48 JST.

Sunshine

In Aja, the average sunshine in December is 4.4h.

UV index

The month with the lowest UV index in Aja, Japan, is December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 4 translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Frequently asked questions

The high-temperature in Aja, Japan, during December is 20.6°C (69.1°F) and the low-temperature is 18.7°C (65.7°F). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 34°C (93.2°F).

The average relative humidity in December in Aja is 73%.

In December, in Aja, Japan, the rain falls for 20.7 days. Throughout December, 77mm (3.03") of precipitation is accumulated.

December has the shortest days of the year, with an average of 10h and 30min of daylight.

The average day length in December in Aja, Japan, is 10h and 32min.

On the first day of December, sunrise is at 06:59 and sunset at 17:36. On the last day of the month, sunrise is at 07:16 and sunset at 17:48 JST.

In Aja, Japan, the average sunshine duration in December is 4.4h.

December is the month with the lowest UV index, with an average maximum UV index of 4.

In Aja, Japan, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Aja, Japan

  • Average high temperature in December: 20.6°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (19°C).

  • Average low temperature in December: 18.7°C

The month with the highest average low temperature is August (28.3°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).

Average pressure in December
Aja, Japan

  • Average pressure in December: 1019.8mbar

The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).

Average wind speed in December
Aja, Japan

  • Average wind speed in December: 27.9km/h

The windiest month (with the highest average wind speed) is December (27.9km/h).
The calmest month (with the lowest average wind speed) is May (19.8km/h).

Average humidity in December
Aja, Japan

  • Average humidity in December: 73%

The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is January (72%).

Average rainfall in December
Aja, Japan

  • Average rainfall in December: 77mm

The wettest month (with the highest rainfall) is June (207mm).
The driest month (with the least rainfall) is February (58mm).

Average rainfall days in December
Aja, Japan

  • Average rainfall days in December: 20.7 days

The months with the highest number of rainy days are January and June (21.5 days).
The month with the least rainy days is April (16.4 days).

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

  • Average daylight in December: 10h and 30min

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 24min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in December
Aja, Japan

  • Average sunshine days in December: 6.4 days

The month with the most sunshine days is April (11.3 days).
The month with the least sunshine days is January (6 days).

Average UV index in December
Aja, Japan

  • Average UV index in December: 4

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

Average cloud cover in December
Aja, Japan

  • Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in December
Aja, Japan

  • Average visibility in December: 10km

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