Last updated: June 24, 2025
In December, the average temperature in Warsaw, United States hovers around 1°C (34°F), with a chilly minimum of -22°C (-6°F) and a milder maximum reaching 17°C (62°F). Expect about 62 mm (2.5 in) of precipitation spread over 9 days, with an average humidity level of 86% that adds to the crisp atmosphere.
In December in Warsaw, the average temperature is 1°C (34°F). Maximum temperatures can reach 17°C (62°F), while minimums can drop to as low as -22°C (-6°F). Be prepared for a wide range of temperatures if you plan to travel during this time.
In Warsaw in December, the precipitation amount is 62 mm (2.5 in) over a span of 9 days, indicating a relatively wet period.
In Warsaw in December, humidity is 86%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making outdoor adventures brisk and invigorating but challenging for travel.
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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 73 mm (2.9 inches) | 85% | moderate |
| February Weather | -1°C (30°F) | 77 mm (3.0 inches) | 85% | moderate |
| March Weather | 4°C (40°F) | 105 mm (4.1 inches) | 86% | high |
| April Weather | 9°C (49°F) | 97 mm (3.8 inches) | 87% | very high |
| May Weather | 16°C (62°F) | 134 mm (5.3 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 113 mm (4.4 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 116 mm (4.6 inches) | 81% | very high |
| August Weather | 23°C (73°F) | 103 mm (4.1 inches) | 79% | very high |
| September Weather | 20°C (68°F) | 74 mm (2.9 inches) | 78% | very high |
| October Weather | 13°C (56°F) | 113 mm (4.5 inches) | 81% | high |
| November Weather | 5°C (40°F) | 80 mm (3.2 inches) | 89% | moderate |
| December Weather | 1°C (34°F) | 62 mm (2.5 inches) | 86% | low |