December weather forecastYoshihara, Japan

December

Weather in December

The first month of the winter, December, is still a pleasant month in Yoshihara, Japan, with temperature in the range of an average low of 18.6°C (65.5°F) and an average high of 20.5°C (68.9°F).

Temperature

December's onset brings a negligible change in high-temperatures, falling from a moderately hot 23.9°C (75°F) in November to an agreeable 20.5°C (68.9°F). Yoshihara's December nights experience a subtle temperature dip to an average of 18.6°C (65.5°F).

Humidity

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

Rainfall

In December, in Yoshihara, the rain falls for 18.5 days. Throughout December, 68mm (2.68") of precipitation is accumulated. Throughout the year, in Yoshihara, there are 215.5 rainfall days, and 1300mm (51.18") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 10h and 30min of daylight.
On the first day of December in Yoshihara, 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 17:47 JST.

Sunshine

In December, the average sunshine is 4.4h.

UV index

The month with the lowest UV index in Yoshihara is December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 4 in December suggests the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

In December, the average high-temperature and low-temperature in Yoshihara are 20.5°C (68.9°F) and 18.6°C (65.5°F) respectively. 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 September is calculated to be 33°C (91.4°F).

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

In December, the rain falls for 18.5 days. Throughout December, 68mm (2.68") of precipitation is accumulated.

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

In December, the average day length in Yoshihara is 10h and 31min.

On the first day of December in Yoshihara, 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 17:47 JST.

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

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

In December, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Yoshihara, Japan

  • Average high temperature in December: 20.5°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 (18.8°C).

  • Average low temperature in December: 18.6°C

The month with the highest average low temperature is August (28.2°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).

Average pressure in December
Yoshihara, Japan

  • Average pressure in December: 1019.9mbar

The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).

Average wind speed in December
Yoshihara, Japan

  • Average wind speed in December: 27.6km/h

The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is May (19.5km/h).

Average humidity in December
Yoshihara, Japan

  • Average humidity in December: 73%

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

Average rainfall in December
Yoshihara, Japan

  • Average rainfall in December: 68mm

The wettest month (with the highest rainfall) is June (198mm).
The driest months (with the least rainfall) are January and February (53mm).

Average rainfall days in December
Yoshihara, Japan

  • Average rainfall days in December: 18.5 days

The month with the highest number of rainy days is October (19.7 days).
The month with the least rainy days is July (16.1 days).

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

  • Average sunshine days in December: 9.1 days

The month with the most sunshine days is July (12.6 days).
The month with the least sunshine days is September (7.1 days).

Average UV index in December
Yoshihara, 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
Yoshihara, Japan

  • Average cloud cover in December: 57

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
Yoshihara, 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).