nomadseason

December Weather in Siemien, Poland

Last updated: August 27, 2025

In December, the average temperature in Siemien, Poland hovers around 1°C (34°F). Expect chilly conditions, with minimum temperatures plunging to -14°C (8°F) and occasional highs reaching 12°C (55°F). Precipitation is also a factor, with about 52 mm (2.0 in) falling over 11 days, and a notable average humidity of 92%. Prepare for a cold and damp experience!

December Temperature in Siemien

In December in Siemien, the average temperature is 1°C (34°F), with maximums reaching 12°C (55°F) and minimums dropping as low as -14°C (8°F). Travelers should prepare for chilly conditions and layer clothing to stay warm while exploring.

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

The chart illustrates December temperature patterns in Siemien, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siemien, December typically has an average temperature of 1°C (34°F), with highs reaching up to 12°C (55°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec303238485768686758504134
Data source: Temperature data for Siemien generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Siemien

In Siemien in December, the total precipitation amount is 52 mm (2.0 in), occurring over the course of 11 days.

December Precipitation Trends in Siemien

The chart displays monthly precipitation patterns in Siemien, 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 Siemien, December typically receives around 52 mm (2.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec4043394773778410175633552
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Siemien

In Siemien in December humidity is 92%. With average temperature 1°C (34°F), this humidity feels like a cold, damp blanket enveloping you, making travel uncomfortable as the chill seeps into your bones, and the air feels heavy and suffocating, leaving little room for any warmth or comfort.

December Average Humidity in Siemien

This chart illustrates the average monthly humidity levels in Siemien, 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 Siemien is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%77%62%61%61%60%70%86%90%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siemien

In Siemien 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 Siemien.

Maximum UV Index Levels in Siemien for December

The chart shows the monthly maximum UV Index (UVI) for Siemien 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 Siemien typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876321
Data source: Siemien 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 Siemien Compares to Other Months

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

This table compares monthly weather conditions in Siemien, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)40 mm (1.6 inches)92%low
February Weather0°C (32°F)43 mm (1.7 inches)89%low
March Weather3°C (38°F)39 mm (1.5 inches)87%moderate
April Weather9°C (48°F)47 mm (1.8 inches)77%moderate
May Weather14°C (57°F)73 mm (2.9 inches)62%high
June Weather20°C (68°F)77 mm (3.0 inches)61%very high
July Weather20°C (68°F)84 mm (3.3 inches)60%very high
August Weather20°C (68°F)101 mm (4.0 inches)60%high
September Weather15°C (59°F)75 mm (3.0 inches)70%high
October Weather10°C (50°F)63 mm (2.5 inches)86%moderate
November Weather5°C (41°F)35 mm (1.4 inches)90%low
December Weather1°C (34°F)52 mm (2.0 inches)92%low

Compare Siemien's Climate with Cities Worldwide