December weather forecastSunomiya, Japan

December

Weather in December

December, the first month of the winter in Sunomiya, is also a moderate month, with an average temperature fluctuating between 13.4°C (56.1°F) and 10.1°C (50.2°F).

Temperature

December ushers in a minute temperature change, with average high-temperatures reducing from November's enjoyable 17.6°C (63.7°F) to a moderate 13.4°C (56.1°F). During the nights of December, Sunomiya maintains an almost steady temperature with an average low of 10.1°C (50.2°F).

Humidity

The average relative humidity in December is 65%.

Rainfall

In December, the rain falls for 11.6 days. Throughout December, 31mm (1.22") of precipitation is accumulated. Throughout the year, in Sunomiya, there are 157.4 rainfall days, and 525mm (20.67") of precipitation is accumulated.

Snowfall

March through December are months without snowfall in Sunomiya.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year in Sunomiya.
On the first day of the month, sunrise is at 06:30 and sunset at 16:29. On the last day of December, sunrise is at 06:48 and sunset at 16:39 JST.

Sunshine

In December, the average sunshine is 5.5h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Sunomiya. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 3 during December translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.

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

Frequently asked questions

In December, in Sunomiya, the average high-temperature is 13.4°C (56.1°F), and the average low-temperature is 10.1°C (50.2°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is estimated at 33°C (91.4°F).

In December, the average relative humidity in Sunomiya is 65%.

In December, in Sunomiya, Japan, the rain falls for 11.6 days. Throughout December, 31mm (1.22") of precipitation is accumulated.

March through December are months without snowfall.

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

With an average of 9h and 54min of daylight, December has the shortest days of the year.

In Sunomiya, Japan, the average day length in December is 9h and 52min.

On the first day of December, sunrise is at 06:30 and sunset at 16:29. On the last day of the month, sunrise is at 06:48 and sunset at 16:39 JST.

In December, the average sunshine duration is 5.5h.

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

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

17.6°C

13.4°C

10.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

23.7km/h

27.1km/h

26.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

12.5

15.6

16.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Sunomiya, Japan

Average high temperature in December: 13.4°C

The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (10.8°C).

Average low temperature in December: 10.1°C

The month with the highest average low temperature is August (25.8°C).
The coldest months (with the lowest average low temperature) are January and February (7.2°C).

Average pressure in December
Sunomiya, Japan

Average pressure in December: 1016mbar

The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Sunomiya, Japan

Average wind speed in December: 24.9km/h

The windiest month (with the highest average wind speed) is March (25.7km/h).
The calmest month (with the lowest average wind speed) is June (18.8km/h).

Average humidity in December
Sunomiya, Japan

Average humidity in December: 65%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (62%).

Average rainfall in December
Sunomiya, Japan

Average rainfall in December: 31mm

The wettest month (with the highest rainfall) is June (70mm).
The driest month (with the least rainfall) is February (26mm).

Average rainfall days in December
Sunomiya, Japan

Average rainfall days in December: 11.6 days

The months with the highest number of rainy days are September and October (15.5 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Sunomiya, Japan

Average snowfall in December: 0mm

The months with the highest snowfall are January and February (1mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Sunomiya, Japan

Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in December: 9h and 54min

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 54min).

Average sunshine in December: 5h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Sunomiya, Japan

Average sunshine days in December: 15.6 days

The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is March (11.2 days).

Average UV index in December
Sunomiya, 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
Sunomiya, Japan

Average cloud cover in December: 38

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in December
Sunomiya, 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).