Last updated: August 23, 2025
In Siersdorf, Germany, the average temperature in December hovers around 5°C (42°F), with lows dipping to -5°C (23°F) and highs reaching up to 15°C (60°F). Expect a fair amount of rain, with 93 mm (3.6 in) of precipitation spread over 18 days. The atmosphere is notably humid, boasting an average humidity of 92%. Be prepared for a chilly and damp experience!
In December in Siersdorf, the average temperature is 5°C (42°F). Maximums can reach 15°C (60°F), and minimums can be as low as -5°C (23°F). Be prepared for chilly weather and pack layers to stay comfortable while exploring the area.
In Siersdorf in December, the precipitation amount is 93 mm (3.6 in) over the course of 18 days.
In Siersdorf in December, humidity is 92%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.
In Siersdorf 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 Siersdorf.
UV Risk Categories
Weather in Siersdorf varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Siersdorf, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 66 mm (2.6 inches) | 91% | low |
| February Weather | 5°C (41°F) | 68 mm (2.7 inches) | 90% | low |
| March Weather | 7°C (45°F) | 71 mm (2.8 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 33 mm (1.3 inches) | 84% | moderate |
| May Weather | 14°C (57°F) | 59 mm (2.3 inches) | 77% | high |
| June Weather | 19°C (66°F) | 66 mm (2.6 inches) | 74% | very high |
| July Weather | 19°C (67°F) | 81 mm (3.2 inches) | 72% | very high |
| August Weather | 19°C (67°F) | 61 mm (2.4 inches) | 71% | high |
| September Weather | 16°C (60°F) | 56 mm (2.2 inches) | 81% | moderate |
| October Weather | 12°C (54°F) | 74 mm (2.9 inches) | 88% | moderate |
| November Weather | 7°C (45°F) | 54 mm (2.1 inches) | 91% | low |
| December Weather | 5°C (42°F) | 93 mm (3.6 inches) | 92% | low |