December weather forecastIsogo, Japan

December

Weather in December

December, the first month of the winter in Isogo, is also a fresh month, with an average temperature fluctuating between 6.9°C (44.4°F) and 11.7°C (53.1°F).

Temperature

A shift in Isogo's weather is observed as November turns into December, with the average high temperature reducing from a comfortable 16.7°C (62.1°F) to a fresh 11.7°C (53.1°F). Isogo maintains an average of approximately a chilly 6.9°C (44.4°F) during December nights, with only a minimal decrease from the daytime temperature.

Humidity

The average relative humidity in December is 63%.

Rainfall

The month with the least rainfall in Isogo, Japan, is December, when the rain falls for 9 days and typically collects 40mm (1.57") of precipitation.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:38 JST.

Sunshine

In December, the average sunshine is 6.2h.

UV index

January through March and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during December translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

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

Frequently asked questions

In Isogo, in December, the average high-temperature is 11.7°C (53.1°F), and the average low-temperature is 6.9°C (44.4°F). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 36°C (96.8°F).

The average relative humidity in December in Isogo, Japan, is 63%.

December is the month with the least rainfall in Isogo. Rain falls for 9 days and accumulates 40mm (1.57") of precipitation.

In Isogo, Japan, during December, the rain falls for 9 days and regularly aggregates up to 40mm (1.57") of precipitation.

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

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

The month with the shortest days in Isogo, Japan, is December, with an average of 9h and 48min of daylight.

In December, the average day length is 9h and 49min.

In December, on the first day of the month, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:38 JST.

The average sunshine duration in December in Isogo is 6.2h.

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

In December, the average daily maximum UV index in Isogo, Japan, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from 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

16.7°C

11.7°C

9.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16.3km/h

17.4km/h

17.5km/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

19.7

20.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Isogo, Japan

Average high temperature in December: 11.7°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: 6.9°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 (4°C).

Average pressure in December
Isogo, Japan

Average pressure in December: 1016.3mbar

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
Isogo, Japan

Average wind speed in December: 15.6km/h

The windiest month (with the highest average wind speed) is April (17.9km/h).
The calmest month (with the lowest average wind speed) is June (14.2km/h).

Average humidity in December
Isogo, Japan

Average humidity in December: 63%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Isogo, Japan

Average rainfall in December: 40mm

The wettest month (with the highest rainfall) is October (126mm).
The driest month (with the least rainfall) is December (40mm).

Average rainfall days in December
Isogo, Japan

Average rainfall days in December: 9 days

The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Isogo, Japan

Average snowfall in December: 0mm

The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Isogo, Japan

Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (1.6 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
Isogo, 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 12min

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

Average sunshine days in December
Isogo, Japan

Average sunshine days in December: 19.7 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is October (11.7 days).

Average UV index in December
Isogo, 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, March and December (UV index 3).

Average cloud cover in December
Isogo, Japan

Average cloud cover in December: 31

The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 30).

Average visibility in December
Isogo, 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).