December weather forecast
Tsukubamirai, Japan

December

Weather in December

December, the first month of the winter in Tsukubamirai, is still a cool month, with an average temperature fluctuating between 5°C (41°F) and 10.7°C (51.3°F).

Temperature

The commencement of December involves a temperature shift, with the average high-temperature dropping from a refreshing 16°C (60.8°F) in November to a fresh 10.7°C (51.3°F). In Tsukubamirai, December is marked by an average low-temperature of 5°C (41°F).

Humidity

In Tsukubamirai, the average relative humidity in December is 64%.

Rainfall

In Tsukubamirai, in December, during 9.8 rainfall days, 20mm (0.79") of precipitation is typically accumulated. Throughout the year, there are 152.6 rainfall days, and 457mm (17.99") of precipitation is accumulated.

Snowfall

April through December are months without snowfall.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:31 and sunset at 16:25. On the last day of December, sunrise is at 06:50 and sunset at 16:35 JST.

Sunshine

In Tsukubamirai, the average sunshine in December is 6h.

UV index

In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 3 during December translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

What is the temperature in December?
In December, the average high-temperature and low-temperature in Tsukubamirai are 10.7°C (51.3°F) and 5°C (41°F) respectively. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 40°C (104°F).
What is the average humidity in December?
The average relative humidity in December is 64%.
How much does it rain in December?
In December, the rain falls for 9.8 days. Throughout December, 20mm (0.79") of precipitation is accumulated.
When it does not snow?
In Tsukubamirai, snow does not fall in April through December.
Does it snow in Tsukubamirai in December?
In Tsukubamirai, in December, it doesn't snow. In January, it regularly snows.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
What is the average length of the day in December?
The average day length in December is 9h and 46min.
When are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 06:31 and sunset at 16:25. On the last day of the month, sunrise is at 06:50 and sunset at 16:35 JST.
How long on average sun shines in December?
The average sunshine duration in December is 6h.
What is the UV index intensity in December?
In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Tsukubamirai, Japan
Average temperature in December
Tsukubamirai, Japan
  • Average high temperature in December: 10.7°C

The warmest month (with the highest average high temperature) is August (31.4°C).
The month with the lowest average high temperature is January (8.6°C).

  • Average low temperature in December: 5°C

The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).

Average pressure in December - Tsukubamirai, Japan
Average pressure in December
Tsukubamirai, 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 - Tsukubamirai, Japan
Average wind speed in December
Tsukubamirai, Japan
  • Average wind speed in December: 11.5km/h

The windiest month (with the highest average wind speed) is April (13.5km/h).
The calmest month (with the lowest average wind speed) is November (10.2km/h).

Average humidity in December - Tsukubamirai, Japan
Average humidity in December
Tsukubamirai, Japan
  • Average humidity in December: 64%

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

Average rainfall in December - Tsukubamirai, Japan
Average rainfall in December
Tsukubamirai, Japan
  • Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is October (59mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in December - Tsukubamirai, Japan
Average rainfall days in December
Tsukubamirai, Japan
  • Average rainfall days in December: 9.8 days

The months with the highest number of rainy days are June and October (15.5 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in December - Tsukubamirai, Japan
Average snowfall in December
Tsukubamirai, Japan
  • Average snowfall in December: 0mm

The month with the highest snowfall is February (25mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December - Tsukubamirai, Japan
Average snowfall days in December
Tsukubamirai, Japan
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (2.5 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 - Tsukubamirai, Japan
Average daylight in December /
Average sunshine in December
Tsukubamirai, Japan
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in December - Tsukubamirai, Japan
Average sunshine days in December
Tsukubamirai, Japan
  • Average sunshine days in December: 18.8 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in December - Tsukubamirai, Japan
Average UV index in December
Tsukubamirai, 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 - Tsukubamirai, Japan
Average cloud cover in December
Tsukubamirai, Japan
  • Average cloud cover in December: 32

The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 30).

Average visibility in December - Tsukubamirai, Japan
Average visibility in December
Tsukubamirai, Japan
  • Average visibility in December: 10km

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

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