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December Weather in Olsztynek, Poland

Last updated: August 27, 2025

In December, the average temperature in Olsztynek, Poland hovers around 1°C (34°F). Expect chilly days with a minimum dropping to -11°C (12°F) and a maximum reaching 10°C (49°F). Be prepared for some wet weather, as precipitation accumulates to 49 mm (1.9 in) over about 12 days. With an average humidity of 93%, layers are a must to stay comfortable!

December Temperature in Olsztynek

In December in Olsztynek, the average temperature is 1°C (34°F). The maximum can reach 10°C (49°F), and the minimum can be as low as -11°C (12°F). Be sure to pack warm clothing and be prepared for chilly weather if you're planning to visit during this time.

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

The chart illustrates December temperature patterns in Olsztynek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olsztynek, December typically has an average temperature of 1°C (34°F), with highs reaching up to 10°C (49°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec303137465464656557494133
Data source: Temperature data for Olsztynek 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 Olsztynek

In Olsztynek in December, the total precipitation amount is 49 mm (1.9 in) spread over 12 days.

December Precipitation Trends in Olsztynek

The chart displays monthly precipitation patterns in Olsztynek, 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 Olsztynek, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4545463988701017379653549
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Olsztynek

In Olsztynek 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 Olsztynek

This chart illustrates the average monthly humidity levels in Olsztynek, 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 Olsztynek is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%87%76%58%56%59%60%71%86%90%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Olsztynek

In Olsztynek 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 Olsztynek.

Maximum UV Index Levels in Olsztynek for December

The chart shows the monthly maximum UV Index (UVI) for Olsztynek 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 Olsztynek typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Olsztynek 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 Olsztynek Compares to Other Months

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

This table compares monthly weather conditions in Olsztynek, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)45 mm (1.8 inches)92%low
February Weather-1°C (31°F)45 mm (1.8 inches)90%low
March Weather3°C (37°F)46 mm (1.8 inches)87%moderate
April Weather8°C (46°F)39 mm (1.5 inches)76%moderate
May Weather12°C (54°F)88 mm (3.5 inches)58%high
June Weather18°C (65°F)70 mm (2.7 inches)56%very high
July Weather18°C (65°F)101 mm (4.0 inches)59%very high
August Weather18°C (65°F)73 mm (2.9 inches)60%high
September Weather14°C (57°F)79 mm (3.1 inches)71%moderate
October Weather9°C (49°F)65 mm (2.6 inches)86%moderate
November Weather5°C (41°F)35 mm (1.4 inches)90%low
December Weather1°C (34°F)49 mm (1.9 inches)93%low

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