December weather forecastSiewierz, Poland
December
Weather in December
December, the first month of the winter in Siewierz, is also an icy month, with an average temperature ranging between min -1.8°C (28.8°F) and max 1.6°C (34.9°F).Temperature
The onset of December coincides with a reduction in the average high-temperature, falling from a chilly 7.3°C (45.1°F) in November to a wintry 1.6°C (34.9°F). Siewierz's December nights demonstrate minimal variation from the daytime temperatures, with an average of -1.8°C (28.8°F).Humidity
In Siewierz, the average relative humidity in December is 86%.Rainfall
In Siewierz, during December, the rain falls for 7.5 days and regularly aggregates up to 25mm (0.98") of precipitation. In Siewierz, during the entire year, the rain falls for 138.8 days and collects up to 438mm (17.24") of precipitation.Snowfall
January through May, October through December are months with snowfall in Siewierz. In December, in Siewierz, Poland, it is snowing for 9.8 days. Throughout December, 82mm (3.23") of snow is accumulated. Throughout the year, in Siewierz, there are 47.1 snowfall days, and 358mm (14.09") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 6min of daylight.On the first day of December, sunrise is at 07:22 and sunset at 15:42. On the last day of the month, sunrise is at 07:43 and sunset at 15:48 CET.
Sunshine
In Siewierz, the average sunshine in December is 3.3h.UV index
The months with the lowest UV index in Siewierz are November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Siewierz, Poland
- Average high temperature in December: 1.6°C
The warmest month (with the highest average high temperature) is August (23.9°C).
The month with the lowest average high temperature is January (-0.7°C).
- Average low temperature in December: -1.8°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (-4.1°C).
Average pressure in December
Siewierz, Poland
- Average pressure in December: 1018.1mbar
The month with the highest atmospheric pressure is October (1018.7mbar).
The month with the lowest atmospheric pressure is July (1014.4mbar).
Average wind speed in December
Siewierz, Poland
- Average wind speed in December: 16.6km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in December
Siewierz, Poland
- Average humidity in December: 86%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and August (69%).
Average rainfall in December
Siewierz, Poland
- Average rainfall in December: 25mm
The wettest month (with the highest rainfall) is July (71mm).
The driest month (with the least rainfall) is November (18mm).
Average rainfall days in December
Siewierz, Poland
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Siewierz, Poland
- Average snowfall in December: 82mm
The month with the highest snowfall is January (116mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Siewierz, Poland
- Average snowfall days in December: 9.8 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Siewierz, Poland
- Average daylight in December: 8h and 6min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in December
Siewierz, Poland
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in December
Siewierz, 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).
Average cloud cover in December
Siewierz, Poland
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Siewierz, Poland
- Average visibility in December: 8km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February and December (8km).
