December weather forecastNagatacho, Japan

December

Weather in December

December, the first month of the winter in Nagatacho, is also a fresh month, with an average temperature varying between 5.9°C (42.6°F) and 11.2°C (52.2°F).

Temperature

Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a comfortable 16.5°C (61.7°F) to a fresh 11.2°C (52.2°F). The average nighttime temperature lowers to an icy 5.9°C (42.6°F) throughout December.

Humidity

In December, the average relative humidity in Nagatacho is 63%.

Rainfall

In Nagatacho, during December, the rain falls for 5.9 days and regularly aggregates up to 12mm (0.47") of precipitation. In Nagatacho, during the entire year, the rain falls for 125.3 days and collects up to 359mm (14.13") of precipitation.

Snowfall

In Nagatacho, snow does not fall in March through December.

Daylight

December has the shortest days of the year in Nagatacho, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:32 and sunset at 16:27. On the last day of December, sunrise is at 06:50 and sunset at 16:37 JST.

Sunshine

In Nagatacho, the average sunshine in December is 6.2h.

UV index

In Nagatacho, Japan, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 3 in December leads to these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.

Frequently asked questions

The average high-temperature, in December, in Nagatacho, is 11.2°C (52.2°F), while the average low-temperature is 5.9°C (42.6°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 38°C (100.4°F).

In Nagatacho, Japan, the average relative humidity in December is 63%.

In Nagatacho, in December, it is raining for 5.9 days, with typically 12mm (0.47") of accumulated precipitation.

In Nagatacho, Japan, snow does not fall in March through December.

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

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

The average day length in December is 9h and 47min.

In December, on the first day of the month, sunrise is at 06:32 and sunset at 16:27. On the last day of the month, in Nagatacho, sunrise is at 06:50 and sunset at 16:37 JST.

In December, the average sunshine duration is 6.2h.

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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
Nagatacho, Japan

  • Average high temperature in December: 11.2°C

The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (8.8°C).

  • Average low temperature in December: 5.9°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3°C).

Average pressure in December
Nagatacho, Japan

  • Average pressure in December: 1016.2mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in December
Nagatacho, Japan

  • Average wind speed in December: 13.5km/h

The windiest month (with the highest average wind speed) is April (15.6km/h).
The calmest month (with the lowest average wind speed) is November (12.3km/h).

Average humidity in December
Nagatacho, 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
Nagatacho, Japan

  • Average rainfall in December: 12mm

The wettest month (with the highest rainfall) is September (54mm).
The driest month (with the least rainfall) is February (10mm).

Average rainfall days in December
Nagatacho, Japan

  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in December
Nagatacho, Japan

  • Average snowfall in December: 0mm

The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Nagatacho, Japan

  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (1.2 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
Nagatacho, 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 18min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in December
Nagatacho, Japan

  • Average sunshine days in December: 24.3 days

The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in December
Nagatacho, Japan

  • Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in December
Nagatacho, Japan

  • Average cloud cover in December: 30

The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 28).

Average visibility in December
Nagatacho, Japan

  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).