Last updated: August 27, 2025
In December, the average temperature in Grajewo, Poland hovers around 0°C (33°F). Prepare for chilly days, as temperatures can dip to a brisk -13°C (10°F), while the mercury can rise to a mild 10°C (50°F). Expect about 56 mm (2.2 in) of precipitation spread over 12 days, and a notable average humidity of 93% will keep the atmosphere feeling quite crisp.
In December in Grajewo, the average temperature is 0°C (33°F). The maximum can reach 10°C (50°F), and the minimum can be as low as -13°C (10°F). Be prepared for chilly conditions and pack accordingly if you're planning to travel during this time.
In Grajewo in December, the precipitation amount is 56 mm (2.2 in) spread over 12 days.
In Grajewo 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 Grajewo 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 Grajewo.
UV Risk Categories
Weather in Grajewo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grajewo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 42 mm (1.7 inches) | 92% | low |
| February Weather | -1°C (31°F) | 38 mm (1.5 inches) | 90% | low |
| March Weather | 2°C (37°F) | 42 mm (1.7 inches) | 87% | moderate |
| April Weather | 7°C (46°F) | 40 mm (1.6 inches) | 76% | moderate |
| May Weather | 13°C (55°F) | 75 mm (2.9 inches) | 58% | high |
| June Weather | 18°C (65°F) | 62 mm (2.4 inches) | 56% | high |
| July Weather | 19°C (66°F) | 98 mm (3.8 inches) | 59% | high |
| August Weather | 18°C (65°F) | 86 mm (3.4 inches) | 60% | high |
| September Weather | 14°C (57°F) | 73 mm (2.9 inches) | 71% | moderate |
| October Weather | 9°C (49°F) | 64 mm (2.5 inches) | 86% | moderate |
| November Weather | 5°C (41°F) | 38 mm (1.5 inches) | 90% | low |
| December Weather | 0°C (33°F) | 56 mm (2.2 inches) | 93% | low |