December Weather in Warsaw, United States

Last updated: June 24, 2025

In December, the average temperature in Warsaw, United States hovers around 2°C (35°F). Temperatures can swing from a chilling -20°C (-4°F) at their lowest to a warm 23°C (73°F) at their peak. Expect 41 mm (1.6 in) of precipitation spread over 6 days, while the air remains notably damp with an average humidity of 84%.

December Temperature in Warsaw

In December in Warsaw, the average temperature is 2°C (35°F), with maximums reaching up to 23°C (73°F) and minimums dropping as low as -20°C (-4°F). This variation in temperature makes Warsaw an ideal destination for travelers seeking diverse weather experiences during their trip.

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 2°C (35°F), with highs reaching up to 23°C (73°F) and lows dropping to around -20°C (-4°F).

Data source: Temperature data for Warsaw generated using information from the Copernicus Climate Change Service.

December Precipitation in Warsaw

In Warsaw in December, the precipitation amount is 41 mm (1.6 in) over the course of 6 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 41 mm (1.6 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Warsaw

In Warsaw in December, humidity is 84%. With an average temperature of 2°C (35°F), this humidity feels like an uncomfortable chill that penetrates your bones, making outdoor travel quite brisk and uninviting.

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 84%, offering insight into how humid the weather typically is during this month.

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 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Warsaw, you can visit Hourly UV Index in Warsaw.

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 2, which falls under the low exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	57 mm (2.3 inches)	81%	moderate
February Weather	-1°C (30°F)	57 mm (2.3 inches)	81%	moderate
March Weather	6°C (43°F)	107 mm (4.2 inches)	81%	high
April Weather	11°C (52°F)	99 mm (3.9 inches)	82%	very high
May Weather	18°C (65°F)	172 mm (6.8 inches)	78%	very high
June Weather	24°C (76°F)	108 mm (4.2 inches)	81%	extreme
July Weather	26°C (79°F)	88 mm (3.5 inches)	79%	very high
August Weather	24°C (76°F)	91 mm (3.6 inches)	77%	very high
September Weather	21°C (71°F)	93 mm (3.7 inches)	78%	very high
October Weather	13°C (56°F)	110 mm (4.3 inches)	78%	high
November Weather	5°C (42°F)	50 mm (2.0 inches)	87%	moderate
December Weather	2°C (35°F)	41 mm (1.6 inches)	84%	low