Wakkanai
Japan
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Wakkanai, Japan

December, the first month of the winter, in Wakkanai, is still a cold month, with average temperature varying between 0.1°C (32.2°F) and -4.2°C (24.4°F).

Temperature

In Wakkanai, the average high-temperature decreases, from a chilly 6.1°C (43°F) in November, to a cold 0.1°C (32.2°F). In December, in Wakkanai, the average low-temperature is -4.2°C (24.4°F).

Humidity

The average relative humidity in December is 70%.

Rainfall

In Wakkanai, Japan, during December, the rain falls for 29 days and regularly aggregates up to 112.8mm (4.4") of precipitation. Throughout the year, in Wakkanai, there are 261 rainfall days, and 1062.8mm (41.8") of precipitation is accumulated.

Snowfall

Months with snowfall in Wakkanai are January through April, October through December. In Wakkanai, Japan, snow falls for 28.2 days, with typically accumulated 1600mm (63") of snow. In Wakkanai, during the entire year, snow falls for 110.1 days, and aggregates up to 6530mm (257.1") of snow.

Sea temperature

In Wakkanai, the average seawater temperature in December is 5.9°C (42.6°F).
Note: Swimming in 5.9°C (42.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

December has the shortest days of the year in Wakkanai, Japan, with an average of 8.8h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 1h of sunshine.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 1 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Wakkanai?

In December, in Wakkanai, Japan, the average high-temperature is 0.1°C (32.2°F), and the average low-temperature is -4.2°C (24.4°F).

What is the average humidity in December in Wakkanai?

In Wakkanai, the average relative humidity in December is 70%.

How much does it rain in Wakkanai in December?

In Wakkanai, Japan, in December, it is raining for 29 days, with typically 112.8mm (4.4") of accumulated precipitation.

How much does it snow in Wakkanai in December?

In December, it is snowing for 28.2 days. Throughout December, 1600mm (63") of snow is accumulated.

How cold is the water in December in Wakkanai?

In Wakkanai, in December, the average water temperature is 5.9°C (42.6°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the month with the shortest days in Wakkanai?

With an average of 8.8h of daylight, December has the shortest days of the year.

How many hours of daylight does Wakkanai have in December?

In Wakkanai, Japan, the average length of the day in December is 8.8h.

What is the month with the least sunshine in Wakkanai?

The month with the least sunshine in Wakkanai is December, with an average of 1h of sunshine.

How long on average sun shines in December in Wakkanai?

In December, the average sunshine in Wakkanai, Japan, is 1h.

What is the month with the lowest UV index in Wakkanai?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Wakkanai.

What is the UV index intensity in December in Wakkanai?

In Wakkanai, Japan, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Wakkanai, Japan
  • Average high temperature in December: 0.1°C

The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is January (-2.7°C).

  • Average low temperature in December: -4.2°C

The month with the highest average low temperature is August (17.3°C).
The coldest month (with the lowest average low temperature) is February (-7.1°C).

Average humidity in December - Wakkanai, Japan
  • Average humidity in December: 70%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is November (67%).

Average rainfall in December - Wakkanai, Japan
  • Average rainfall in December: 112.8mm

The wettest month (with the highest rainfall) is October (134.1mm).
The driest month (with the lowest rainfall) is April (49mm).

Average rainfall days in December - Wakkanai, Japan
  • Average rainfall days in December: 29 days

The month with the highest number of rainy days is January (30 days).
Months with the lowest number of rainy days are April, June and September (17 days).

Average snowfall in December - Wakkanai, Japan
  • Average snowfall in December: 1600mm

The month with the highest snowfall is January (1730mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in December - Wakkanai, Japan
  • Average snowfall days in December: 28.2 days

The month with the highest number of snowfall days is December (28.2 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in December - Wakkanai, Japan
  • Average sea temperature in December: 5.9°C

The best month for swimming (with the highest average sea temperature) is August (19.7°C).
The coldest month (with the lowest average sea temperature) is February (2.7°C).

Average daylight in December / Average sunshine in December - Wakkanai, Japan
  • Average daylight in December: 8.8h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in December: 1h

The month with most sunshine is May (Average sunshine: 6h).
The month with least sunshine is December (Average sunshine: 1h).

Average UV index in December - Wakkanai, Japan
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).