Last updated: June 24, 2025
In January, the average temperature in Warsaw, United States hovers around 1°C (34°F). While temperatures can dip as low as -20°C (-3°F), they can also reach a pleasant 20°C (68°F). Expect 65 mm (2.5 in) of precipitation spread over about 6 days, contributing to an average humidity of 80%. Be prepared for a mix of chilly and mild conditions!
In January in Warsaw, the average temperature is 1°C (34°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -20°C (-3°F). Be prepared for a wide range of temperatures when traveling during this time.
In Warsaw in January, the precipitation amount is 65 mm (2.5 in) during a period of 6 days.
In Warsaw in January, humidity is 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.
In Warsaw in January, 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.
UV Risk Categories
Weather in Warsaw varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Warsaw, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 1°C (34°F) | 65 mm (2.5 inches) | 80% | moderate |
February Weather | 2°C (36°F) | 61 mm (2.4 inches) | 78% | moderate |
March Weather | 9°C (48°F) | 123 mm (4.8 inches) | 75% | high |
April Weather | 13°C (56°F) | 120 mm (4.7 inches) | 77% | very high |
May Weather | 19°C (67°F) | 177 mm (7.0 inches) | 82% | very high |
June Weather | 25°C (77°F) | 102 mm (4.0 inches) | 83% | extreme |
July Weather | 27°C (80°F) | 117 mm (4.6 inches) | 81% | extreme |
August Weather | 25°C (77°F) | 115 mm (4.5 inches) | 78% | very high |
September Weather | 23°C (73°F) | 63 mm (2.5 inches) | 72% | very high |
October Weather | 15°C (59°F) | 102 mm (4.0 inches) | 72% | high |
November Weather | 8°C (46°F) | 54 mm (2.1 inches) | 84% | moderate |
December Weather | 5°C (41°F) | 39 mm (1.6 inches) | 86% | moderate |