Last updated: August 27, 2025
In December, the average temperature in Chelm Slaski, Poland hovers around 1°C (35°F). Expect chilly nights with minimum temperatures plummeting to -11°C (13°F), while daytime highs can reach a comfortable 15°C (59°F). During this month, precipitation is likely, with about 70 mm (2.7 in) of rain spread over 15 days. Additionally, the air remains quite humid, with an average humidity level of 91%—ideal for cozying up indoors!
In December in Chelm Slaski, the average temperature is 1°C (35°F). The maximum can reach 15°C (59°F) and the minimum can be as low as -11°C (13°F). Be prepared for a wide range of temperatures, making it essential to pack layered clothing for your trip.
In Chelm Slaski in December, the precipitation amount is 70 mm (2.7 in) over a period of 15 days.
In Chelm Slaski in December humidity is 91%. With an average temperature of 1°C (35°F), this humidity feels like an icy mist clinging to your skin, making every step outside a challenge as you contend with the chill and dampness that wraps around you, dampening the joy of exploration.
In Chelm Slaski 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 Chelm Slaski.
UV Risk Categories
Weather in Chelm Slaski varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Chelm Slaski, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 46 mm (1.8 inches) | 90% | low |
| February Weather | 1°C (35°F) | 64 mm (2.5 inches) | 87% | low |
| March Weather | 4°C (40°F) | 51 mm (2.0 inches) | 83% | moderate |
| April Weather | 9°C (48°F) | 64 mm (2.5 inches) | 76% | moderate |
| May Weather | 13°C (56°F) | 107 mm (4.2 inches) | 70% | high |
| June Weather | 19°C (66°F) | 84 mm (3.3 inches) | 71% | very high |
| July Weather | 19°C (67°F) | 96 mm (3.8 inches) | 67% | very high |
| August Weather | 20°C (68°F) | 113 mm (4.4 inches) | 64% | high |
| September Weather | 15°C (59°F) | 109 mm (4.3 inches) | 67% | high |
| October Weather | 10°C (51°F) | 84 mm (3.3 inches) | 83% | moderate |
| November Weather | 6°C (42°F) | 51 mm (2.0 inches) | 90% | low |
| December Weather | 1°C (35°F) | 70 mm (2.7 inches) | 91% | low |