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December Weather in Siewierz, Poland

Last updated: August 27, 2025

In Siewierz, Poland, the average temperature in December hovers around 1°C (35°F). Expect chilly days with minimums dropping to -12°C (10°F) and maximums rising to 14°C (58°F). During this period, precipitation averages 60 mm (2.4 in) over 13 days, contributing to the area's high average humidity of 92%. Bundle up and prepare for a wet and frosty month!

December Temperature in Siewierz

In December in Siewierz, the average temperature is 1°C (35°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as -12°C (10°F). Travelers should prepare for a wide range of temperatures and dress in layers to stay comfortable during their visit.

December Weather in Siewierz: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Siewierz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siewierz, December typically has an average temperature of 1°C (35°F), with highs reaching up to 14°C (58°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec303339485666676759514234
Data source: Temperature data for Siewierz generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Siewierz

In Siewierz in December, the precipitation amount is 60 mm (2.4 in) over a span of 13 days.

December Precipitation Trends in Siewierz

The chart displays monthly precipitation patterns in Siewierz, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Siewierz, December typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec4356466489859610295714660
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siewierz

In Siewierz in December, humidity is 92%. With an average temperature of 1°C (35°F), this humidity feels like a chilly dampness that seeps into your bones, making traveling uncomfortable and requiring extra layers to stay warm and dry.

December Average Humidity in Siewierz

This chart illustrates the average monthly humidity levels in Siewierz, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Siewierz is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%79%65%66%67%67%72%83%90%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siewierz

In Siewierz in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Siewierz.

Maximum UV Index Levels in Siewierz for December

The chart shows the monthly maximum UV Index (UVI) for Siewierz in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Siewierz typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224578876321
Data source: Siewierz December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Siewierz Compares to Other Months

Weather in Siewierz varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Siewierz, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Siewierz, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)43 mm (1.7 inches)90%low
February Weather1°C (34°F)56 mm (2.2 inches)88%low
March Weather4°C (39°F)46 mm (1.8 inches)86%moderate
April Weather9°C (48°F)64 mm (2.5 inches)79%moderate
May Weather13°C (56°F)89 mm (3.5 inches)65%high
June Weather19°C (66°F)85 mm (3.3 inches)66%very high
July Weather19°C (67°F)96 mm (3.8 inches)67%very high
August Weather20°C (68°F)102 mm (4.0 inches)67%high
September Weather15°C (59°F)95 mm (3.7 inches)72%high
October Weather10°C (51°F)71 mm (2.8 inches)83%moderate
November Weather5°C (42°F)46 mm (1.8 inches)90%low
December Weather1°C (35°F)60 mm (2.4 inches)92%low

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