December weather forecast
Valsta, Sweden

Weather in December

The first month of the winter, December, is also a wintry month in Valsta, Sweden, with average temperature fluctuating between -2.5°C (27.5°F) and 1.1°C (34°F).

Temperature

In Valsta, the average high-temperature slightly decreases, from a cold 4.7°C (40.5°F) in November, to a still wintry 1.1°C (34°F). The average low-temperature, in December, is -2.5°C (27.5°F).

Humidity

Months with the highest humidity in Valsta are January, February and December, with an average relative humidity of 90%.

Rainfall

In Valsta, it is raining for 9.8 days, with typically 32mm (1.26") of accumulated precipitation. Throughout the year, there are 144.9 rainfall days, and 400mm (15.75") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Valsta, during December, snow falls for 10.9 days and regularly aggregates up to 102mm (4.02") of snow. Throughout the year, in Valsta, there are 53 snowfall days, and 497mm (19.57") of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 6.3h of daylight.

Sunshine

With an average of 3h of sunshine, December has the least sunshine of the year in Valsta.

UV index

In Valsta, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 2 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. 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 are the most humid months in Valsta?

January, February and December, with an average relative humidity of 90%, are most humid months in Valsta, Sweden.

What is the average humidity in December in Valsta?

In December, the average relative humidity is 90%.

How many days does it rain in December in Valsta?

In Valsta, Sweden, during December, the rain falls for 9.8 days and regularly aggregates up to 32mm (1.26") of precipitation.

How many days does it snow in December in Valsta?

In Valsta, in December, snow falls for 10.9 days, with typically accumulated 102mm (4.02") of snow.

What is the month with the shortest days in Valsta?

With an average of 6.3h of daylight, December has the shortest days of the year in Valsta, Sweden.

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

In December, the average length of the day in Valsta is 6.3h.

What is the month with the least sunshine in Valsta?

With an average of 3h of sunshine, December has the least sunshine of the year in Valsta.

How many hours of sunshine does Valsta have in December?

In December, the average sunshine is 3h.

What is the UV index reading in December in Valsta?

In December, the average daily maximum UV index in Valsta is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Valsta, Sweden

Average temperature in December - Valsta, Sweden
  • Average high temperature in December: 1.1°C

The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is January (-0.8°C).

  • Average low temperature in December: -2.5°C

The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-4.4°C).

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Average pressure in December
Valsta, Sweden

Average pressure in December - Valsta, Sweden
  • Average pressure in December: 1008.2mbar

The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1008.2mbar).

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Average wind speed in December
Valsta, Sweden

Average wind speed in December - Valsta, Sweden
  • Average wind speed in December: 13.7km/h

The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).

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Average humidity in December
Valsta, Sweden

Average humidity in December - Valsta, Sweden
  • Average humidity in December: 90%

Months with the highest relative humidity are January, February and December (90%).
The month with the lowest relative humidity is May (69%).

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Average rainfall in December
Valsta, Sweden

Average rainfall in December - Valsta, Sweden
  • Average rainfall in December: 32mm

The wettest month (with the highest rainfall) is July (55mm).
The driest month (with the least rainfall) is April (18mm).

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Average rainfall days in December
Valsta, Sweden

Average rainfall days in December - Valsta, Sweden
  • Average rainfall days in December: 9.8 days

Months with the highest number of rainy days are July and August (16.8 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in December
Valsta, Sweden

Average snowfall in December - Valsta, Sweden
  • Average snowfall in December: 102mm

The month with the highest snowfall is January (121mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Valsta, Sweden

Average snowfall days in December - Valsta, Sweden
  • Average snowfall days in December: 10.9 days

The month with the highest number of snowfall days is January (12.8 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
Valsta, Sweden

Average daylight in December / Average sunshine in December - Valsta, Sweden
  • Average daylight in December: 6.3h

The month with the longest days is June (Average daylight: 18.4h).
The month with the shortest days is December (Average daylight: 6.3h).

  • Average sunshine in December: 3h

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 3h).

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Average sunshine days in December
Valsta, Sweden

Average sunshine days in December - Valsta, Sweden
  • Average sunshine days in December: 12.4 days

Months with the most sunshine days are March and April (15.6 days).
The month with the least sunshine days is February (11.8 days).

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Average UV index in December
Valsta, Sweden

Average UV index in December - Valsta, Sweden
  • Average UV index in December: 2

Months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Valsta, Sweden

Average cloud cover in December - Valsta, Sweden
  • Average cloud cover in December: 66

The month with the most cloud cover is February (Cloud cover 68).
Months with the least cloud cover are June and August (Cloud cover 42).

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Average visibility in December
Valsta, Sweden

Average visibility in December - Valsta, Sweden
  • Average visibility in December: 8km

Months with the highest visibility are April, May, June, July, August and September (9km).
Months with the lowest visibility are January and February (7km).

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