December weather forecastTsukuba, Japan

December

Weather in December

December, the first month of the winter in Tsukuba, is still a cool month, with an average temperature ranging between min 3.7°C (38.7°F) and max 10.2°C (50.4°F).

Temperature

December's onset corresponds with a shift in the average high-temperature, moving from a mild 15.9°C (60.6°F) in November to a cool 10.2°C (50.4°F). In December, the average low-temperature in Tsukuba, Japan, records at a cold 3.7°C (38.7°F) during the nights.

Humidity

In Tsukuba, the average relative humidity in December is 65%.

Rainfall

The months with the least rainfall in Tsukuba are February and December Rain falls for 7.4 days and accumulates 27mm (1.06") of rain.

Snowfall

January through April, November and December are months with snowfall. In Tsukuba, during December, snow falls for 0.5 days and regularly aggregates up to 6mm (0.24") of snow. Throughout the year, there are 8.4 snowfall days, and 143mm (5.63") of snow is accumulated.

Daylight

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

Sunshine

The average sunshine in December in Tsukuba is 6.3h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Tsukuba. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in December, in Tsukuba, is 10.2°C (50.4°F) and the average low-temperature is 3.7°C (38.7°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 41°C (105.8°F).

In December, the average relative humidity in Tsukuba, Japan, is 65%.

February and December are months with the least rain in Tsukuba, Japan, when the rain falls for 7.4 days and typically aggregates up to 27mm (1.06") of rain.

In Tsukuba, Japan, during December, the rain falls for 7.4 days and regularly aggregates up to 27mm (1.06") of precipitation.

In Tsukuba, Japan, in December, during 0.5 snowfall days, 6mm (0.24") of snow is typically accumulated.

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

The average day length in December in Tsukuba, Japan, is 9h and 46min.

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, in Tsukuba, sunrise is at 06:50 and sunset at 16:35 JST.

In December, the average sunshine duration in Tsukuba, Japan, is 6.3h.

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

In Tsukuba, Japan, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

15.9°C

10.2°C

8.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.9km/h

10.2km/h

10.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.5

22.5

24.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Tsukuba, Japan

Average high temperature in December: 10.2°C

The warmest month (with the highest average high temperature) is August (31.6°C).
The month with the lowest average high temperature is January (8.1°C).

Average low temperature in December: 3.7°C

The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).

Average pressure in December
Tsukuba, Japan

Average pressure in December: 1016.3mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in December
Tsukuba, Japan

Average wind speed in December: 9.3km/h

The windiest month (with the highest average wind speed) is April (11.1km/h).
The calmest month (with the lowest average wind speed) is November (8.2km/h).

Average humidity in December
Tsukuba, Japan

Average humidity in December: 65%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (61%).

Average rainfall in December
Tsukuba, Japan

Average rainfall in December: 27mm

The wettest month (with the highest rainfall) is October (117mm).
The driest months (with the least rainfall) are February and December (27mm).

Average rainfall days in December
Tsukuba, Japan

Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is July (21.2 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in December
Tsukuba, Japan

Average snowfall in December: 6mm

The month with the highest snowfall is February (55mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in December
Tsukuba, Japan

Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Tsukuba, Japan

Average daylight in December: 9h and 48min

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 18min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in December
Tsukuba, Japan

Average sunshine days in December: 22.5 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is June (7.3 days).

Average UV index in December
Tsukuba, Japan

Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December
Tsukuba, Japan

Average cloud cover in December: 29

The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 27).

Average visibility in December
Tsukuba, Japan

Average visibility in December: 10km

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