Last updated: August 23, 2025
In December, the average temperature in Osterby, Germany hovers around 4°C (40°F). During this time, you might experience a chill with minimum temperatures dropping to -9°C (15°F), while the highs can reach up to 11°C (52°F). Be prepared for damp days, as precipitation tends to accumulate to about 70 mm (2.8 in) across 14 days, with an average humidity of 87%.
In December in Osterby, the average temperature is 4°C (40°F). Maximums can reach 11°C (52°F), while minimums can be as low as -9°C (15°F). Be prepared for chilly weather and pack warm clothing if you plan to travel during this time.
In Osterby in December, the precipitation amount is 70 mm (2.8 in) spread over 14 days.
In Osterby in December humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.
In Osterby 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 Osterby.
UV Risk Categories
Weather in Osterby varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Osterby, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 59 mm (2.3 inches) | 89% | low |
| February Weather | 3°C (38°F) | 66 mm (2.6 inches) | 88% | low |
| March Weather | 4°C (40°F) | 73 mm (2.9 inches) | 87% | moderate |
| April Weather | 8°C (46°F) | 42 mm (1.7 inches) | 84% | moderate |
| May Weather | 12°C (53°F) | 72 mm (2.9 inches) | 79% | high |
| June Weather | 16°C (62°F) | 60 mm (2.4 inches) | 75% | very high |
| July Weather | 17°C (63°F) | 84 mm (3.3 inches) | 76% | high |
| August Weather | 17°C (64°F) | 85 mm (3.3 inches) | 77% | high |
| September Weather | 14°C (58°F) | 78 mm (3.1 inches) | 84% | moderate |
| October Weather | 11°C (52°F) | 98 mm (3.8 inches) | 87% | moderate |
| November Weather | 7°C (44°F) | 59 mm (2.3 inches) | 88% | low |
| December Weather | 4°C (40°F) | 70 mm (2.8 inches) | 87% | low |