Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The move into December indicates a reduction in the average high-temperature, down from November's fresh 12.5°C (54.5°F) to a frosty 6.4°C (43.5°F). Nagamachi, during December nights, observes a steady temperature, averaging at an icy 1.5°C (34.7°F).Humidity
The average relative humidity in December is 76%.Rainfall
In Nagamachi, in December, it is raining for 9.5 days, with typically 27mm (1.06") of accumulated precipitation. In Nagamachi, during the entire year, the rain falls for 153.4 days and collects up to 741mm (29.17") of precipitation.Snowfall
January through April and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 4.3 snowfall days, it receives 22mm (0.87") of snow. Throughout the year, there are 27.1 snowfall days, and 195mm (7.68") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 06:34 and sunset at 16:16. On the last day of December, sunrise is at 06:52 and sunset at 16:26 JST.
Sunshine
The average sunshine in December is 5.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: An average UV index of 2 in December transforms into this advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Nagamachi, Japan
- Average high temperature in December: 6.4°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in December: 1.5°C
The month with the highest average low temperature is August (21.4°C).
The coldest months (with the lowest average low temperature) are January and February (-1.7°C).
Average pressure in December
Nagamachi, Japan
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Nagamachi, Japan
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is July (8.1km/h).
Average humidity in December
Nagamachi, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Nagamachi, Japan
- Average rainfall in December: 27mm
The wettest months (with the highest rainfall) are July and October (111mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in December
Nagamachi, Japan
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Nagamachi, Japan
- Average snowfall in December: 22mm
The month with the highest snowfall is February (63mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Nagamachi, Japan
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Nagamachi, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Nagamachi, Japan
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Nagamachi, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Nagamachi, Japan
- Average cloud cover in December: 43
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is May (Cloud cover 36).
Average visibility in December
Nagamachi, Japan
- Average visibility in December: 10km
The months with the highest visibility are October, November and December (10km).
The month with the lowest visibility is July (8km).
