December weather forecast and climate
Sillerbo, Sweden

Weather in December

December, the first month of the winter, in Sillerbo, is also a subzero cold month, with average temperature varying between -6°C (21.2°F) and -2.5°C (27.5°F).

Temperature

In December, the average high-temperature slightly decreases, from a cold 1.2°C (34.2°F) in November, to a subzero cold -2.5°C (27.5°F). The average low-temperature, in December, is -6°C (21.2°F).

Humidity

In Sillerbo, the average relative humidity in December is 91%.

Rainfall

In Sillerbo, Sweden, during December, the rain falls for 7.2 days and regularly aggregates up to 37mm (1.46") of precipitation. Throughout the year, in Sillerbo, there are 134.6 rainfall days, and 414mm (16.3") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall in Sillerbo is December when snow falls for 16.5 days and typically aggregates up to 220mm (8.66") of snow.

Daylight

December has the shortest days of the year in Sillerbo, with an average of 5.4h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 1.6h of sunshine.

UV index

Months with the lowest UV index in Sillerbo are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Sillerbo?

In Sillerbo, in December, the average high-temperature is -2.5°C (27.5°F), and the average low-temperature is -6°C (21.2°F).

What is the average humidity in December in Sillerbo?

In Sillerbo, Sweden, the average relative humidity in December is 91%.

How many days does it rain in December in Sillerbo?

In Sillerbo, during December, the rain falls for 7.2 days and regularly aggregates up to 37mm (1.46") of precipitation.

How many days does it snow in December in Sillerbo?

In Sillerbo, during December, snow falls for 16.5 days and regularly aggregates up to 220mm (8.66") of snow.

When does it snow the most in Sillerbo?

December is the month with the most snowfall. Snow falls for 16.5 days and accumulates 220mm (8.66") of snow.

What is the month with the shortest days in Sillerbo?

With an average of 5.4h of daylight, December has the shortest days of the year in Sillerbo, Sweden.

What is the average length of the day in December in Sillerbo?

The average length of the day in December in Sillerbo, Sweden, is 5.4h.

What is the month with the least sunshine in Sillerbo?

The month with the least sunshine in Sillerbo is December, with an average of 1.6h of sunshine.

How long on average sun shines in December in Sillerbo?

In December, the average sunshine in Sillerbo, Sweden, is 1.6h.

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

Months with the lowest UV index in Sillerbo, Sweden, are January, February, November and December, with an average maximum UV index of 1.

What is the UV index reading in December in Sillerbo?

In Sillerbo, Sweden, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Sillerbo, Sweden

Average temperature in December - Sillerbo, Sweden
  • Average high temperature in December: -2.5°C

The warmest month (with the highest average high temperature) is July (20.5°C).
The month with the lowest average high temperature is January (-3.8°C).

  • Average low temperature in December: -6°C

The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).

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Average pressure in December
Sillerbo, Sweden

Average pressure in December - Sillerbo, Sweden
  • Average pressure in December: 1006.3mbar

The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1006.3mbar).

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Average wind speed in December
Sillerbo, Sweden

Average wind speed in December - Sillerbo, Sweden
  • Average wind speed in December: 10km/h

The windiest month (with the highest average wind speed) is March (10.4km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).

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Average humidity in December
Sillerbo, Sweden

Average humidity in December - Sillerbo, Sweden
  • Average humidity in December: 91%

Months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (67%).

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Average rainfall in December
Sillerbo, Sweden

Average rainfall in December - Sillerbo, Sweden
  • Average rainfall in December: 37mm

The wettest months (with the highest rainfall) are June and July (45mm).
The driest month (with the least rainfall) is April (19mm).

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Average rainfall days in December
Sillerbo, Sweden

Average rainfall days in December - Sillerbo, Sweden
  • Average rainfall days in December: 7.2 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in December
Sillerbo, Sweden

Average snowfall in December - Sillerbo, Sweden
  • Average snowfall in December: 220mm

The month with the highest snowfall is December (220mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Sillerbo, Sweden

Average snowfall days in December - Sillerbo, Sweden
  • Average snowfall days in December: 16.5 days

The month with the highest number of snowfall days is January (18.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Sillerbo, Sweden

Average daylight in December / Average sunshine in December - Sillerbo, Sweden
  • Average daylight in December: 5.4h

The month with the longest days is June (Average daylight: 19.5h).
The month with the shortest days is December (Average daylight: 5.4h).

  • Average sunshine in December: 1.6h

The month with the most sunshine is June (Average sunshine: 11.5h).
The month with the least sunshine is December (Average sunshine: 1.6h).

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Average sunshine days in December
Sillerbo, Sweden

Average sunshine days in December - Sillerbo, Sweden
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is October (15 days).
The month with the least sunshine days is February (10.3 days).

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Average UV index in December
Sillerbo, Sweden

Average UV index in December - Sillerbo, Sweden
  • Average UV index in December: 1

Months with the highest UV index are May, June, July and August (UV index 4).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
Sillerbo, Sweden

Average cloud cover in December - Sillerbo, Sweden
  • Average cloud cover in December: 63

The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 46).

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Average visibility in December
Sillerbo, Sweden

Average visibility in December - Sillerbo, Sweden
  • Average visibility in December: 7km

Months with the highest visibility are May, June and July (9km).
Months with the lowest visibility are January and February (5km).

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