Last updated: August 27, 2025
In December, the average temperature in Bialystok, Poland is a brisk 0°C (33°F), with temperatures ranging from a chilly -14°C (6°F) to a milder 11°C (51°F). Expect 56 mm (2.2 in) of precipitation over about 13 days, contributing to an average humidity level of 93%—perfect for cozy indoor activities!
In December in Bialystok, the average temperature is 0°C (33°F). The maximum can reach 11°C (51°F) and the minimum can be as low as -14°C (6°F). Be prepared for cold weather if you plan to travel during this time.
In Bialystok in December, the precipitation amount is 56 mm (2.2 in) over the course of 13 days.
In Bialystok in December, humidity is 93%. With an average temperature of 0°C (33°F), this humidity feels like an incredibly damp chill that seeps into your bones, making outdoor travel uncomfortable and challenging, as it creates a heavy atmosphere that can dampen your spirits and energy.
In Bialystok 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 Bialystok.
UV Risk Categories
Weather in Bialystok varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bialystok, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 44 mm (1.7 inches) | 93% | low |
| February Weather | -1°C (31°F) | 42 mm (1.6 inches) | 90% | low |
| March Weather | 3°C (37°F) | 42 mm (1.7 inches) | 88% | moderate |
| April Weather | 8°C (46°F) | 45 mm (1.8 inches) | 77% | moderate |
| May Weather | 13°C (56°F) | 75 mm (3.0 inches) | 59% | high |
| June Weather | 19°C (66°F) | 60 mm (2.3 inches) | 59% | very high |
| July Weather | 19°C (67°F) | 98 mm (3.9 inches) | 60% | high |
| August Weather | 19°C (66°F) | 89 mm (3.5 inches) | 60% | high |
| September Weather | 14°C (57°F) | 68 mm (2.7 inches) | 72% | moderate |
| October Weather | 9°C (49°F) | 64 mm (2.5 inches) | 88% | moderate |
| November Weather | 5°C (40°F) | 39 mm (1.5 inches) | 91% | low |
| December Weather | 0°C (33°F) | 56 mm (2.2 inches) | 93% | low |