Nagano
Japan
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Nagano, Japan

December, the first month of the winter, in Nagano, is still a chilly month, with average temperature fluctuating between -1.6°C (29.1°F) and 6.8°C (44.2°F).

Temperature

In December, the average high-temperature decreases, from a moderate 13°C (55.4°F) in November, to a frosty 6.8°C (44.2°F). In Nagano, Japan, in December, the average low-temperature is -1.6°C (29.1°F).

Humidity

The average relative humidity in Nagano is 77%.

Rainfall

In December, in Nagano, the rain falls for 10.4 days. Throughout December, 45.5mm (1.8") of precipitation is accumulated. Throughout the year, in Nagano, there are 129.8 rainfall days, and 932.7mm (36.7") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Nagano, Japan. In Nagano, during 10.8 snowfall days, 450mm (17.7") of snow is typically accumulated. Throughout the year, in Nagano, there are 63 snowfall days, and 2570mm (101.2") of snow is accumulated.

Daylight

The month with the shortest days in Nagano is December, with an average of 9.7h of daylight.

Sunshine

In Nagano, the average sunshine in December is 4.4h.

What is the temperature in December in Nagano?

The average high-temperature, in December, is 6.8°C (44.2°F), while the average low-temperature is -1.6°C (29.1°F).

What is the average humidity in December in Nagano?

In Nagano, Japan, the average relative humidity in December is 77%.

How many days does it rain in December in Nagano?

In December, in Nagano, the rain falls for 10.4 days. Throughout December, 45.5mm (1.8") of precipitation is accumulated.

How much does it snow in Nagano in December?

In Nagano, Japan, in December, during 10.8 snowfall days, 450mm (17.7") of snow is typically accumulated.

What is the month with the shortest days in Nagano?

The month with the shortest days in Nagano, Japan, is December, with an average of 9.7h of daylight.

What is the average length of the day in December in Nagano?

In December, the average length of the day in Nagano, Japan, is 9.7h.

How many hours of sunshine does Nagano have in December?

In December, the average sunshine in Nagano, Japan, is 4.4h.
Average temperature in December - Nagano, Japan
  • Average high temperature in December: 6.8°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (3.5°C).

  • Average low temperature in December: -1.6°C

The month with the highest average low temperature is August (21.3°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).

Average humidity in December - Nagano, Japan
  • Average humidity in December: 77%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is April (61%).

Average rainfall in December - Nagano, Japan
  • Average rainfall in December: 45.5mm

The wettest month (with the highest rainfall) is July (134.4mm).
The driest month (with the lowest rainfall) is November (44.3mm).

Average rainfall days in December - Nagano, Japan
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is July (13.1 days).
The month with the lowest number of rainy days is November (8.6 days).

Average snowfall in December - Nagano, Japan
  • Average snowfall in December: 450mm

The month with the highest snowfall is January (980mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December - Nagano, Japan
  • Average snowfall days in December: 10.8 days

The month with the highest number of snowfall days is January (22.9 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Nagano, Japan
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 4.4h

The month with most sunshine is May (Average sunshine: 6.7h).
The month with least sunshine is January (Average sunshine: 4.1h).