December weather forecastYohena, Japan

December

Weather in December

December, the first month of the winter in Yohena, is still a pleasant month, with an average temperature fluctuating between 20.2°C (68.4°F) and 18.3°C (64.9°F).

Temperature

December's arrival aligns with a minor decrease in average high-temperatures, from November's warm 23.6°C (74.5°F) to an agreeable 20.2°C (68.4°F). In Yohena, nights during December observe an average temperature decrease to a refreshing 18.3°C (64.9°F).

Humidity

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

Rainfall

In Yohena, in December, during 20.4 rainfall days, 78mm (3.07") of precipitation is typically accumulated. In Yohena, during the entire year, the rain falls for 229.8 days and collects up to 1512mm (59.53") of precipitation.

Daylight

With an average of 10h and 30min of daylight, December has the shortest days of the year in Yohena.
On the first day of December, sunrise is at 06:59 and sunset at 17:34. On the last day of the month, sunrise is at 07:16 and sunset at 17:45 JST.

Sunshine

The average sunshine in December is 4.2h.

UV index

January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.

Frequently asked questions

In Yohena, in December, the average high-temperature is 20.2°C (68.4°F), and the average low-temperature is 18.3°C (64.9°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in September is computed to be 34°C (93.2°F).

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

In Yohena, in December, during 20.4 rainfall days, 78mm (3.07") of precipitation is typically accumulated.

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

In Yohena, the average day length in December is 10h and 30min.

In December, on the first day of the month, sunrise is at 06:59 and sunset at 17:34. On the last day of the month, sunrise is at 07:16 and sunset at 17:45 JST.

The average sunshine duration in December in Yohena, Japan, is 4.2h.

The months with the lowest UV index in Yohena, Japan, are January and December, with an average maximum UV index of 4.

In Yohena, Japan, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
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
Yohena, Japan

  • Average high temperature in December: 20.2°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 (18.6°C).

  • Average low temperature in December: 18.3°C

The month with the highest average low temperature is August (27.8°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).

Average pressure in December
Yohena, Japan

  • Average pressure in December: 1020mbar

The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is August (1006.7mbar).

Average wind speed in December
Yohena, Japan

  • Average wind speed in December: 25.7km/h

The windiest month (with the highest average wind speed) is December (25.7km/h).
The calmest month (with the lowest average wind speed) is May (18.4km/h).

Average humidity in December
Yohena, 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
Yohena, Japan

  • Average rainfall in December: 78mm

The wettest month (with the highest rainfall) is June (228mm).
The driest month (with the least rainfall) is January (63mm).

Average rainfall days in December
Yohena, Japan

  • Average rainfall days in December: 20.4 days

The month with the highest number of rainy days is June (22.6 days).
The month with the least rainy days is November (16.2 days).

Average daylight in December /
Average sunshine in December
Yohena, 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 12min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Yohena, Japan

  • Average sunshine days in December: 7.1 days

The month with the most sunshine days is May (11.1 days).
The month with the least sunshine days is June (5.4 days).

Average UV index in December
Yohena, Japan

  • Average UV index in December: 4

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

Average cloud cover in December
Yohena, Japan

  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in December
Yohena, Japan

  • Average visibility in December: 10km

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