December weather forecastSielsko, Poland
December
Weather in December
The first month of the winter, December, is still a cold month in Sielsko, Poland, with an average temperature fluctuating between -0.4°C (31.3°F) and 3.1°C (37.6°F).Temperature
December's arrival aligns with a minor decrease in average high-temperatures, from November's chilly 7.5°C (45.5°F) to an icy 3.1°C (37.6°F). Sielsko reports an average low temperature of -0.4°C (31.3°F) in December, a minor decrease from the day's highs.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 89%.Rainfall
In Sielsko, in December, during 15.1 rainfall days, 45mm (1.77") of precipitation is typically accumulated. In Sielsko, during the entire year, the rain falls for 161.6 days and collects up to 423mm (16.65") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Sielsko, during December, snow falls for 9.1 days and regularly aggregates up to 61mm (2.4") of snow. Throughout the year, in Sielsko, Poland, there are 40.2 snowfall days, and 268mm (10.55") of snow is accumulated.Daylight
With an average of 7h and 36min of daylight, December has the shortest days of the year in Sielsko, Poland.On the first day of December in Sielsko, sunrise is at 07:52 and sunset at 15:42. On the last day of the month, sunrise is at 08:14 and sunset at 15:48 CET.
Sunshine
The average sunshine in December in Sielsko, Poland, is 2.9h.UV index
The months with the lowest UV index in Sielsko are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests this advice:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sielsko, Poland
- Average high temperature in December: 3.1°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (1.3°C).
- Average low temperature in December: -0.4°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-2.2°C).
Average pressure in December
Sielsko, Poland
- Average pressure in December: 1013.7mbar
The months with the highest atmospheric pressure are September and October (1016.5mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).
Average wind speed in December
Sielsko, Poland
- Average wind speed in December: 15.9km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is August (12.2km/h).
Average humidity in December
Sielsko, Poland
- Average humidity in December: 89%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Sielsko, Poland
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is January (48mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in December
Sielsko, Poland
- Average rainfall days in December: 15.1 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in December
Sielsko, Poland
- Average snowfall in December: 61mm
The month with the highest snowfall is January (88mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sielsko, Poland
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sielsko, Poland
- Average daylight in December: 7h and 36min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 2h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Sielsko, Poland
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is December (8.3 days).
Average UV index in December
Sielsko, Poland
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Sielsko, Poland
- Average cloud cover in December: 73
The month with the most cloud cover is December (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Sielsko, Poland
- Average visibility in December: 8km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, November and December (8km).
