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December Weather in Sieniawa, Poland

Last updated: August 27, 2025

In December, the average temperature in Sieniawa, Poland hovers around 1°C (35°F), with a minimum drop to -14°C (7°F) and a maximum reaching up to 14°C (57°F). Expect approximately 59 mm (2.3 in) of precipitation over 12 days, contributing to a notably high average humidity of 91%. Prepare for a chilly and damp month ahead!

December Temperature in Sieniawa

In December in Sieniawa, the average temperature is 1°C (35°F). The maximum can reach 14°C (57°F), and the minimum can be as low as -14°C (7°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates December temperature patterns in Sieniawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sieniawa, December typically has an average temperature of 1°C (35°F), with highs reaching up to 14°C (57°F) and lows dropping to around -14°C (7°F).
JanFebMarAprMayJunJulAugSepOctNovDec303439495867686859514235
Data source: Temperature data for Sieniawa 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 Sieniawa

In Sieniawa in December, the precipitation amount is 59 mm (2.3 in) occurring over the course of 12 days.

December Precipitation Trends in Sieniawa

The chart displays monthly precipitation patterns in Sieniawa, 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 Sieniawa, December typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4256444910080989480714759
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sieniawa

In Sieniawa in December humidity is 91%. With an average temperature of 1°C (35°F), this humidity feels like an icy mist clinging to your skin, making every step outside a challenge as you contend with the chill and dampness that wraps around you, dampening the joy of exploration.

December Average Humidity in Sieniawa

This chart illustrates the average monthly humidity levels in Sieniawa, 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 Sieniawa is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%76%58%56%56%55%68%84%89%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sieniawa

In Sieniawa 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 Sieniawa.

Maximum UV Index Levels in Sieniawa for December

The chart shows the monthly maximum UV Index (UVI) for Sieniawa 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 Sieniawa typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Sieniawa 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 Sieniawa Compares to Other Months

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

This table compares monthly weather conditions in Sieniawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)42 mm (1.6 inches)91%low
February Weather1°C (34°F)56 mm (2.2 inches)89%low
March Weather4°C (40°F)44 mm (1.7 inches)86%moderate
April Weather9°C (49°F)49 mm (1.9 inches)76%high
May Weather14°C (58°F)100 mm (3.9 inches)58%high
June Weather20°C (68°F)80 mm (3.2 inches)56%very high
July Weather20°C (69°F)98 mm (3.9 inches)56%very high
August Weather20°C (68°F)94 mm (3.7 inches)55%high
September Weather15°C (60°F)80 mm (3.1 inches)68%high
October Weather11°C (51°F)71 mm (2.8 inches)84%moderate
November Weather6°C (42°F)47 mm (1.9 inches)89%low
December Weather1°C (35°F)59 mm (2.3 inches)91%low

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