December weather forecastKoshigoe, Japan

December

Weather in December

December, the first month of the winter in Koshigoe, is still a cool month, with temperature in the range of an average high of 11.8°C (53.2°F) and an average low of 7°C (44.6°F).

Temperature

As Koshigoe, Japan, enters December, the average high-temperature subtly lowers from the an enjoyable 16.7°C (62.1°F) of November to a fresh 11.8°C (53.2°F). In December, Koshigoe's nighttime temperatures demonstrate a slight decrease, stabilizing at an average of 7°C (44.6°F).

Humidity

The average relative humidity in December in Koshigoe is 63%.

Rainfall

In Koshigoe, in December, during 6.1 rainfall days, 13mm (0.51") of precipitation is typically accumulated. In Koshigoe, during the entire year, the rain falls for 129.4 days and collects up to 351mm (13.82") of precipitation.

Snowfall

April through December are months without snowfall.

Daylight

The month with the shortest days in Koshigoe is December, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 06:32 and sunset at 16:29. On the last day of the month, sunrise is at 06:50 and sunset at 16:39 JST.

Sunshine

In December, the average sunshine is 6.4h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

Koshigoe in December has an average high-temperature of 11.8°C (53.2°F) and an average low-temperature of 7°C (44.6°F). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 36°C (96.8°F).

In December, the average relative humidity is 63%.

In Koshigoe, in December, during 6.1 rainfall days, 13mm (0.51") of precipitation is typically accumulated.

In Koshigoe, snow does not fall in April through December.

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

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

In December, the average day length is 9h and 50min.

In December, on the first day of the month, sunrise is at 06:32 and sunset at 16:29. On the last day of the month, sunrise is at 06:50 and sunset at 16:39 JST.

In Koshigoe, the average sunshine duration in December is 6.4h.

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

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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 snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Koshigoe, Japan

  • Average high temperature in December: 11.8°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.3°C).

  • Average low temperature in December: 7°C

The month with the highest average low temperature is August (25.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).

Average pressure in December
Koshigoe, Japan

  • Average pressure in December: 1016.4mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Koshigoe, Japan

  • Average wind speed in December: 15.4km/h

The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.9km/h).

Average humidity in December
Koshigoe, Japan

  • Average humidity in December: 63%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Koshigoe, Japan

  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is February (12mm).

Average rainfall days in December
Koshigoe, Japan

  • Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is December (6.1 days).

Average snowfall in December
Koshigoe, Japan

  • Average snowfall in December: 0mm

The month with the highest snowfall is February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Koshigoe, Japan

  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Koshigoe, 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 24min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in December
Koshigoe, Japan

  • Average sunshine days in December: 22 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
Koshigoe, 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
Koshigoe, Japan

  • Average cloud cover in December: 29

The months with the most cloud cover are March and October (Cloud cover 43).
The months with the least cloud cover are January and December (Cloud cover 29).

Average visibility in December
Koshigoe, 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).