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December Weather in Siemiatycze, Poland

Last updated: August 27, 2025

In December, the average temperature in Siemiatycze, Poland hovers around 1°C (34°F). You can expect chilly days with temperatures ranging from a minimum of -15°C (5°F) to a maximum of 12°C (54°F). Prepare for wet weather as well, with an average precipitation of 53 mm (2.1 in) spread over 12 days. Don't forget to bundle up—humidity levels are quite high at 93%!

December Temperature in Siemiatycze

In December, in Siemiatycze, the average temperature is 1°C (34°F). The maximum can reach 12°C (54°F), and the minimum can be as low as -15°C (5°F). Be sure to pack warm clothing if you're planning to visit during this chilly month.

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

The chart illustrates December temperature patterns in Siemiatycze, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siemiatycze, December typically has an average temperature of 1°C (34°F), with highs reaching up to 12°C (54°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137475667676758494133
Data source: Temperature data for Siemiatycze 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 Siemiatycze

In Siemiatycze in December, the total precipitation amount is 53 mm (2.1 in) spread over 12 days.

December Precipitation Trends in Siemiatycze

The chart displays monthly precipitation patterns in Siemiatycze, 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 Siemiatycze, December typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec434237437377788668673453
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siemiatycze

In Siemiatycze in December humidity is 93%. With an average temperature of 1°C (34°F), this humidity feels like an icy blanket enveloping you, making every step outdoors a challenge as the cold air clings to your skin, intensifying the chill and dampness.

December Average Humidity in Siemiatycze

This chart illustrates the average monthly humidity levels in Siemiatycze, 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 Siemiatycze is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%77%59%59%60%60%72%89%91%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siemiatycze

In Siemiatycze 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 Siemiatycze.

Maximum UV Index Levels in Siemiatycze for December

The chart shows the monthly maximum UV Index (UVI) for Siemiatycze 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 Siemiatycze typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Siemiatycze 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 Siemiatycze Compares to Other Months

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

This table compares monthly weather conditions in Siemiatycze, 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)93%low
February Weather0°C (32°F)42 mm (1.7 inches)90%low
March Weather3°C (38°F)37 mm (1.5 inches)88%moderate
April Weather8°C (47°F)43 mm (1.7 inches)77%moderate
May Weather13°C (56°F)73 mm (2.9 inches)59%high
June Weather19°C (67°F)77 mm (3.0 inches)59%very high
July Weather20°C (68°F)78 mm (3.1 inches)60%very high
August Weather19°C (67°F)86 mm (3.4 inches)60%high
September Weather14°C (58°F)68 mm (2.7 inches)72%moderate
October Weather10°C (50°F)66 mm (2.6 inches)88%moderate
November Weather5°C (41°F)34 mm (1.3 inches)91%low
December Weather1°C (34°F)53 mm (2.1 inches)93%low

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