December weather forecastOppamacho, Japan

December

Weather in December

December, the first month of the winter in Oppamacho, is still a cool month, with temperature in the range of an average low of 8.4°C (47.1°F) and an average high of 12.5°C (54.5°F).

Temperature

The beginning of December subtly marks a decrease in the average high-temperature, transitioning from a refreshing 17.1°C (62.8°F) in November to a cool 12.5°C (54.5°F). A minimal decline in temperature from daytime highs is anticipated throughout the December nights, averaging a chilly 8.4°C (47.1°F).

Humidity

In Oppamacho, the average relative humidity in December is 64%.

Rainfall

February and December are months with the least rain when the rain falls for 8.7 days and typically aggregates up to 39mm (1.54") of rain.

Snowfall

April through December are months without snowfall.

Daylight

The month with the shortest days in Oppamacho is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:31 and sunset at 16:29. On the last day of December, sunrise is at 06:49 and sunset at 16:39 JST.

Sunshine

In December, the average sunshine is 6.1h.

UV index

The months with the lowest UV index in Oppamacho are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 3 translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Oppamacho in December has an average high-temperature of 12.5°C (54.5°F) and an average low-temperature of 8.4°C (47.1°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 34°C (93.2°F).

In Oppamacho, the average relative humidity in December is 64%.

February and December are months with the least rain in Oppamacho when the rain falls for 8.7 days and typically aggregates up to 39mm (1.54") of rain.

In Oppamacho, in December, during 8.7 rainfall days, 39mm (1.54") of precipitation is typically accumulated.

April through December are months without snowfall in Oppamacho, Japan.

In Oppamacho, in December, it doesn't snow. In January, it regularly snows.

With an average of 9h and 48min of daylight, December has the shortest days of the year.

The average day length in December in Oppamacho, Japan, is 9h and 50min.

In December, on the first day of the month, sunrise is at 06:31 and sunset at 16:29. On the last day of the month, in Oppamacho, sunrise is at 06:49 and sunset at 16:39 JST.

In Oppamacho, Japan, the average sunshine duration in December is 6.1h.

The months with the lowest UV index in Oppamacho are January, February and December, with an average maximum UV index of 3.

The average daily maximum UV index in December in Oppamacho is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

17.1°C

12.5°C

9.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

19.3km/h

21.2km/h

20.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.2

21.3

23.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Oppamacho, Japan

Average high temperature in December: 12.5°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).

Average low temperature in December: 8.4°C

The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

Average pressure in December
Oppamacho, Japan

Average pressure in December: 1016.2mbar

The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Oppamacho, Japan

Average wind speed in December: 19.1km/h

The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).

Average humidity in December
Oppamacho, Japan

Average humidity in December: 64%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).

Average rainfall in December
Oppamacho, Japan

Average rainfall in December: 39mm

The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).

Average rainfall days in December
Oppamacho, Japan

Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in December
Oppamacho, Japan

Average snowfall in December: 0mm

The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Oppamacho, Japan

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Oppamacho, 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 6min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in December
Oppamacho, Japan

Average sunshine days in December: 21.3 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).

Average UV index in December
Oppamacho, Japan

Average UV index in December: 3

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 3).

Average cloud cover in December
Oppamacho, Japan

Average cloud cover in December: 31

The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Oppamacho, 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).