December weather forecast
Bialystok, Poland

Weather in December

The first month of the winter, December, is also a wintry month in Bialystok, Poland, with an average temperature fluctuating between -2°C (28.4°F) and 0.8°C (33.4°F).

Temperature

In December, the average high-temperature decreases from a cold 5.9°C (42.6°F) in November to a still wintry 0.8°C (33.4°F). In December, the average low-temperature is -2°C (28.4°F).

Humidity

The average relative humidity in December is 90%.

Rainfall

In Bialystok, in December, it is raining for 11.4 days, with typically 43mm (1.69") of accumulated precipitation. Throughout the year, in Bialystok, there are 164.4 rainfall days, and 515mm (20.28") of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Bialystok, during 15.5 snowfall days, 126mm (4.96") of snow is typically accumulated. Throughout the year, in Bialystok, there are 71.5 snowfall days, and 596mm (23.46") of snow is accumulated.

Daylight

With an average of 7h and 39min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 07:18 and sunset at 15:14. On the last day of the month, sunrise is at 07:41 and sunset at 15:19 CET.

Sunshine

The average sunshine in December in Bialystok is 2.6h.

UV index

The months with the lowest UV index in Bialystok are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 1 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the 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. 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 average humidity in December in Bialystok?

In December, the average relative humidity in Bialystok is 90%.

How much does it rain in Bialystok in December?

In Bialystok, Poland, during December, the rain falls for 11.4 days and regularly aggregates up to 43mm (1.69") of precipitation.

How many days does it snow in December in Bialystok?

In Bialystok, Poland, during December, snow falls for 15.5 days and regularly aggregates up to 126mm (4.96") of snow.

What is the month with the shortest days in Bialystok?

The month with the shortest days in Bialystok is December, with an average of 7h and 39min of daylight.

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

The average day length in December is 7h and 39min.

When is the sunrise / sunset in December in Bialystok?

In December, on the first day of the month, sunrise is at 07:18 and sunset at 15:14. On the last day of the month, sunrise is at 07:41 and sunset at 15:19 CET.

How many hours of sunshine does Bialystok have in December?

In December, the average sunshine duration in Bialystok is 2.6h.

When is the lowest UV index in Bialystok?

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

How high is the UV index in December in Bialystok?

In Bialystok, Poland, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.

Average temperature in December
Bialystok, Poland

Average temperature in December - Bialystok, Poland
  • Average high temperature in December: 0.8°C

The warmest months (with the highest average high temperature) are July and August (24.2°C).
The month with the lowest average high temperature is January (-1.5°C).

  • Average low temperature in December: -2°C

The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).

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Average pressure in December
Bialystok, Poland

Average pressure in December - Bialystok, Poland
  • Average pressure in December: 1015.5mbar

The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).

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Average wind speed in December
Bialystok, Poland

Average wind speed in December - Bialystok, Poland
  • Average wind speed in December: 13.2km/h

The windiest month (with the highest average wind speed) is December (13.2km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).

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Average humidity in December
Bialystok, Poland

Average humidity in December - Bialystok, Poland
  • Average humidity in December: 90%

The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and August (70%).

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Average rainfall in December
Bialystok, Poland

Average rainfall in December - Bialystok, Poland
  • Average rainfall in December: 43mm

The wettest month (with the highest rainfall) is June (69mm).
The driest month (with the least rainfall) is April (27mm).

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Average rainfall days in December
Bialystok, Poland

Average rainfall days in December - Bialystok, Poland
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is February (7.9 days).

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Average snowfall in December
Bialystok, Poland

Average snowfall in December - Bialystok, Poland
  • Average snowfall in December: 126mm

The month with the highest snowfall is January (192mm).
The months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in December
Bialystok, Poland

Average snowfall days in December - Bialystok, Poland
  • Average snowfall days in December: 15.5 days

The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Bialystok, Poland
  • Average daylight in December: 7h and 39min

The month with the longest days is June (Average daylight: 16h and 52min).
The month with the shortest days is December (Average daylight: 7h and 39min).

  • Average sunshine in December: 2.6h

The month with the most sunshine is August (Average sunshine: 10.2h).
The months with the least sunshine are January and February (Average sunshine: 2.2).

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Average sunshine days in December
Bialystok, Poland

Average sunshine days in December - Bialystok, Poland
  • Average sunshine days in December: 7.8 days

The month with the most sunshine days is October (15.5 days).
The months with the least sunshine days are January and February (6.8 days).

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Average UV index in December
Bialystok, Poland

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
Bialystok, Poland

Average cloud cover in December - Bialystok, Poland
  • Average cloud cover in December: 75

The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
Bialystok, Poland

Average visibility in December - Bialystok, Poland
  • Average visibility in December: 7km

The months with the highest visibility are April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (6km).

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