December weather forecast
Slupsk, Poland

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Weather in December

The highlight of December's weather in Slupsk is the return of winter with increased snowfall and an average temperature dropping to 3.2°C (37.8°F). The city gets draped in snow, offering a white canvas that typifies the waning days of the year. December claims the shift from the mild cold of November to the harsh winters the city is known for. Curled up warm indoors or reveling in the snow outside, people welcome the festive spirit in style.

Temperature

As December arrives, Slupsk's weather displays a minor decrease in high-temperatures, transitioning from November's frosty 7.5°C (45.5°F) to a wintry 3.2°C (37.8°F). December nights cool to an average low-temperature of 0.2°C (32.4°F), a marginal decrease from its daytime equivalent.

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 86%.

Rainfall

In December, the rain falls for 11.9 days. Throughout December, 36mm (1.42") of precipitation is accumulated. In Slupsk, Poland, during the entire year, the rain falls for 129.2 days and collects up to 353mm (13.9") of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In December, it is snowing for 6.9 days. Throughout December, 33mm (1.3") of snow is accumulated. Throughout the year, there are 33.3 snowfall days, and 196mm (7.72") of snow is accumulated.

Daylight

December has the shortest days of the year in Slupsk, with an average of 7h and 24min of daylight.
On the first day of the month, sunrise is at 07:50 and sunset at 15:31. On the last day of December, sunrise is at 08:13 and sunset at 15:36 CET.

Sunshine

January and December, with an average of 2.8h of sunshine, are months with the least sunshine.

UV index

November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 1 during December leads to these advisories:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

Is it cold in Slupsk during December?

In December, in Slupsk, the average high-temperature is 3.2°C (37.8°F), and the average low-temperature is 0.2°C (32.4°F).

What is the most humid month in Slupsk?

January, February and December, with an average relative humidity of 86%, are most humid months.

What is the average humidity in December in Slupsk?

In Slupsk, Poland, the average relative humidity in December is 86%.

How many days does it rain in December in Slupsk?

In December, in Slupsk, the rain falls for 11.9 days. Throughout December, 36mm (1.42") of precipitation is accumulated.

How many days does it snow in December in Slupsk?

In December, it is snowing for 6.9 days. Throughout December, 33mm (1.3") of snow is accumulated.

What is the month with the shortest days in Slupsk?

The month with the shortest days is December, with an average of 7h and 24min of daylight.

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

In December, the average day length in Slupsk, Poland, is 7h and 24min.

When is the sunrise / sunset in December in Slupsk?

On the first day of December, sunrise is at 07:50 and sunset at 15:31. On the last day of the month, sunrise is at 08:13 and sunset at 15:36 CET.

What are the months with the least sunshine in Slupsk?

January and December, with an average of 2.8h of sunshine, are months with the least sunshine in Slupsk, Poland.

How long on average sun shines in December in Slupsk?

The average sunshine duration in December is 2.8h.

When is the lowest UV index in Slupsk?

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

What is the UV index reading in December in Slupsk?

The average daily maximum UV index in December in Slupsk, Poland, is 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Slupsk, Poland

Average temperature in December - Slupsk, Poland
  • Average high temperature in December: 3.2°C

The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (1.2°C).

  • Average low temperature in December: 0.2°C

The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).

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Average pressure in December
Slupsk, Poland

Average pressure in December - Slupsk, Poland
  • Average pressure in December: 1012.9mbar

The month with the highest atmospheric pressure is October (1016.3mbar).
The month with the lowest atmospheric pressure is December (1012.9mbar).

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Average wind speed in December
Slupsk, Poland

Average wind speed in December - Slupsk, Poland
  • Average wind speed in December: 19.4km/h

The windiest month (with the highest average wind speed) is December (19.4km/h).
The calmest month (with the lowest average wind speed) is August (13.9km/h).

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Average humidity in December
Slupsk, Poland

Average humidity in December - Slupsk, Poland
  • Average humidity in December: 86%

The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in December
Slupsk, Poland

Average rainfall in December - Slupsk, Poland
  • Average rainfall in December: 36mm

The wettest month (with the highest rainfall) is July (38mm).
The driest month (with the least rainfall) is April (12mm).

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Average rainfall days in December
Slupsk, Poland

Average rainfall days in December - Slupsk, Poland
  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is April (8 days).

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Average snowfall in December
Slupsk, Poland

Average snowfall in December - Slupsk, Poland
  • Average snowfall in December: 33mm

The month with the highest snowfall is January (72mm).
The months with the least snowfall are June, July, August, September and October (0mm).

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Average snowfall days in December
Slupsk, Poland

Average snowfall days in December - Slupsk, Poland
  • Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Slupsk, Poland

Average daylight in December / Average sunshine in December - Slupsk, Poland
  • Average daylight in December: 7h and 2min

The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).

  • Average sunshine in December: 2h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 2h and 48min).

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Average sunshine days in December
Slupsk, Poland

Average sunshine days in December - Slupsk, Poland
  • Average sunshine days in December: 12 days

The months with the most sunshine days are April and May (19.8 days).
The month with the least sunshine days is December (12 days).

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Average UV index in December
Slupsk, Poland

Average UV index in December - Slupsk, Poland
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).

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Average cloud cover in December
Slupsk, Poland

Average cloud cover in December - Slupsk, Poland
  • Average cloud cover in December: 72

The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in December
Slupsk, Poland

Average visibility in December - Slupsk, Poland
  • Average visibility in December: 9km

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

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Slupsk, Poland

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