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December Weather in Warsaw, United States

Last updated: June 24, 2025

In December, the average temperature in Warsaw, United States hovers around 5°C (41°F). Expect a chilly minimum of -15°C (6°F), but temperatures can rise to a pleasant maximum of 24°C (76°F). The region experiences about 39 mm (1.6 in) of precipitation over 5 days, coupled with an average humidity of 86%. Prepare for a mix of cool and mild weather!

December Temperature in Warsaw

In December in Warsaw, the average temperature is 5°C (41°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop to as low as -15°C (6°F). Be sure to pack for a wide range of weather conditions when traveling to Warsaw this month.

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

The chart illustrates December temperature patterns in Warsaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Warsaw, December typically has an average temperature of 5°C (41°F), with highs reaching up to 24°C (76°F) and lows dropping to around -15°C (6°F).
JanFebMarAprMayJunJulAugSepOctNovDec343648556677807773594640
Data source: Temperature data for Warsaw 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 Warsaw

In Warsaw in December, the precipitation amount is 39 mm (1.6 in) over a period of 5 days.

December Precipitation Trends in Warsaw

The chart displays monthly precipitation patterns in Warsaw, 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 Warsaw, December typically receives around 39 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec6561123120177102118115631025440
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Warsaw

In Warsaw in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

December Average Humidity in Warsaw

This chart illustrates the average monthly humidity levels in Warsaw, 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 Warsaw is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Warsaw

In Warsaw in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Warsaw, you can check the information here.

Maximum UV Index Levels in Warsaw for December

The chart shows the monthly maximum UV Index (UVI) for Warsaw 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 Warsaw typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35610101111109753
Data source: Warsaw 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 Warsaw Compares to Other Months

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

This table compares monthly weather conditions in Warsaw, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)65 mm (2.5 inches)80%moderate
February Weather2°C (36°F)61 mm (2.4 inches)78%moderate
March Weather9°C (48°F)123 mm (4.8 inches)75%high
April Weather13°C (56°F)120 mm (4.7 inches)77%very high
May Weather19°C (67°F)177 mm (7.0 inches)82%very high
June Weather25°C (77°F)102 mm (4.0 inches)83%extreme
July Weather27°C (80°F)117 mm (4.6 inches)81%extreme
August Weather25°C (77°F)115 mm (4.5 inches)78%very high
September Weather23°C (73°F)63 mm (2.5 inches)72%very high
October Weather15°C (59°F)102 mm (4.0 inches)72%high
November Weather8°C (46°F)54 mm (2.1 inches)84%moderate
December Weather5°C (41°F)39 mm (1.6 inches)86%moderate

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