December weather forecast and climate
Sijsele, Belgium

Weather in December

December, the first month of the winter, in Sijsele, is still a chilly month, with temperature in the range of an average low of 4.6°C (40.3°F) and an average high of 7.7°C (45.9°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a chilly 7.7°C (45.9°F). The average low-temperature, in Sijsele, is 4.6°C (40.3°F).

Humidity

January and December, with an average relative humidity of 85%, are most humid months.

Rainfall

Months with the most rainfall are August and December, with an average 56mm (2.2") of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Sijsele, Belgium, during December, snow falls for 2.2 days and regularly aggregates up to 14mm (0.55") of snow. Throughout the year, there are 9.6 snowfall days, and 66mm (2.6") of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 8h of daylight.

Sunshine

With an average of 3.6h of sunshine, December has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sijsele. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
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.
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FAQ

What is the temperature in December in Sijsele?

The average high-temperature, in December, in Sijsele, is 7.7°C (45.9°F), while the average low-temperature is 4.6°C (40.3°F).

What are the most humid months in Sijsele?

Months with the highest humidity in Sijsele are January and December, with an average relative humidity of 85%.

What is the average humidity in December in Sijsele?

The average relative humidity in December in Sijsele is 85%.

How much does it rain in Sijsele in December?

In Sijsele, Belgium, in December, during 18.3 rainfall days, 56mm (2.2") of precipitation is typically accumulated.

What is the rainiest month in Sijsele?

Months with the most rainfall in Sijsele, Belgium, are August and December, with an average 56mm (2.2") of precipitation.

How much does it snow in Sijsele in December?

In December, in Sijsele, it is snowing for 2.2 days. Throughout December, 14mm (0.55") of snow is accumulated.

What is the month with the shortest days in Sijsele?

December has the shortest days of the year in Sijsele, Belgium, with an average of 8h of daylight.

How many hours of daylight does Sijsele have in December?

In Sijsele, Belgium, the average length of the day in December is 8h.

What is the month with the least sunshine in Sijsele?

The month with the least sunshine is December, with an average of 3.6h of sunshine.

How many hours of sunshine does Sijsele have in December?

The average sunshine in December is 3.6h.

What are the months with the lowest UV index in Sijsele?

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

What is the UV index intensity in December in Sijsele?

In December, the average daily maximum UV index in Sijsele is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Sijsele, Belgium

Average temperature in December - Sijsele, Belgium
  • Average high temperature in December: 7.7°C

The warmest month (with the highest average high temperature) is August (21.4°C).
The month with the lowest average high temperature is January (6.2°C).

  • Average low temperature in December: 4.6°C

The month with the highest average low temperature is August (15.1°C).
The coldest months (with the lowest average low temperature) are January and February (2.8°C).

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Average pressure in December
Sijsele, Belgium

Average pressure in December - Sijsele, Belgium
  • Average pressure in December: 1015.5mbar

The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1011.7mbar).

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Average wind speed in December
Sijsele, Belgium

Average wind speed in December - Sijsele, Belgium
  • Average wind speed in December: 22.6km/h

The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).

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Average humidity in December
Sijsele, Belgium

Average humidity in December - Sijsele, Belgium
  • Average humidity in December: 85%

Months with the highest relative humidity are January and December (85%).
Months with the lowest relative humidity are April, July and August (76%).

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Average rainfall in December
Sijsele, Belgium

Average rainfall in December - Sijsele, Belgium
  • Average rainfall in December: 56mm

The wettest months (with the highest rainfall) are August and December (56mm).
The driest month (with the least rainfall) is April (20mm).

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Average rainfall days in December
Sijsele, Belgium

Average rainfall days in December - Sijsele, Belgium
  • Average rainfall days in December: 18.3 days

The month with the highest number of rainy days is November (18.6 days).
The month with the least rainy days is April (12.1 days).

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Average snowfall in December
Sijsele, Belgium

Average snowfall in December - Sijsele, Belgium
  • Average snowfall in December: 14mm

The month with the highest snowfall is January (27mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in December
Sijsele, Belgium

Average snowfall days in December - Sijsele, Belgium
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.3 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Sijsele, Belgium

Average daylight in December / Average sunshine in December - Sijsele, Belgium
  • Average daylight in December: 8h

The month with the longest days is June (Average daylight: 16.5h).
The month with the shortest days is December (Average daylight: 8h).

  • Average sunshine in December: 3.6h

The month with the most sunshine is June (Average sunshine: 10.4h).
The month with the least sunshine is December (Average sunshine: 3.6h).

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Average sunshine days in December
Sijsele, Belgium

Average sunshine days in December - Sijsele, Belgium
  • Average sunshine days in December: 7 days

The month with the most sunshine days is April (15.4 days).
The month with the least sunshine days is December (7 days).

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Average UV index in December
Sijsele, Belgium

Average UV index in December - Sijsele, Belgium
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Sijsele, Belgium

Average cloud cover in December - Sijsele, Belgium
  • Average cloud cover in December: 62

The month with the most cloud cover is December (Cloud cover 62).
Months with the least cloud cover are April and August (Cloud cover 38).

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Average visibility in December
Sijsele, Belgium

Average visibility in December - Sijsele, Belgium
  • Average visibility in December: 9km

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

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