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 sea temperature 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
Weather in December
Temperature
With December's onset, the average high-temperature recedes from November's enjoyable 16.5°C (61.7°F) to a fresh 11.2°C (52.2°F). Throughout December, the nighttime temperature averages to an icy 5.9°C (42.6°F).Humidity
In December, the average relative humidity is 62%.Rainfall
The month with the least rainfall in Tokyo is December, when the rain falls for 8.8 days and typically collects 21mm (0.83") of precipitation.Snowfall
In Tokyo, Japan, snow does not fall in April through December.Sea temperature
In Tokyo, the average seawater temperature in December is 17.3°C (63.1°F).Note: Swimming in 17.3°C (63.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Tokyo.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 Tokyo, the average sunshine in December is 6.3h.UV index
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Tokyo. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the temperature in December in Tokyo?
What is the average humidity in December in Tokyo?
What is the driest month in Tokyo?
How much does it rain in Tokyo in December?
When it does not snow in Tokyo?
Does it snow in Tokyo in December?
What is the sea temperature in December in Tokyo?
What is the month with the shortest days in Tokyo?
How many hours of daylight does Tokyo have in December?
When is the sunrise / sunset in December in Tokyo?
How many hours of sunshine does Tokyo have in December?
What are the months with the lowest UV index in Tokyo?
What is the UV index reading in December in Tokyo?
Average temperature in December
Tokyo, Japan
- Average high temperature in December: 11.2°C
The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in December: 5.9°C
The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in December
Tokyo, Japan
- Average pressure in December: 1016.3mbar
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
Tokyo, Japan
- Average wind speed in December: 12.9km/h
The windiest month (with the highest average wind speed) is April (15.3km/h).
The calmest month (with the lowest average wind speed) is November (12.1km/h).
Average humidity in December
Tokyo, Japan
- Average humidity in December: 62%
The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is January (59%).
Average rainfall in December
Tokyo, Japan
- Average rainfall in December: 21mm
The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days in December
Tokyo, Japan
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Tokyo, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Tokyo, Japan
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Tokyo, Japan
- Average sea temperature in December: 17.3°C
The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (14°C).
Average daylight in December /
Average sunshine in December
Tokyo, Japan
- Average daylight in December: 9h and 5min
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 2min
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 48min).
Average sunshine days in December
Tokyo, Japan
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (14.4 days).
Average UV index in December
Tokyo, 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, November and December (UV index 3).
Average cloud cover in December
Tokyo, Japan
- Average cloud cover in December: 30
The months with the most cloud cover are June and October (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in December
Tokyo, 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).
Tokyo, Japan
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