Last updated: August 23, 2025
In December, the average temperature in Aach, Germany hovers around 4°C (39°F), with minimum lows reaching -5°C (22°F) and maximum highs of 14°C (57°F). Expect significant precipitation, averaging 131 mm (5.2 in) over 20 days, contributing to a notably high average humidity of 93%. Prepare for a chilly and damp month!
In December in Aach, the average temperature is 4°C (39°F). The maximum can reach 14°C (57°F) and the minimum can be as low as -5°C (22°F). Travelers should pack layers to stay comfortable in the varying temperatures during this month.
In Aach in December, the precipitation amount is 131 mm (5.2 in) over the course of 20 days.
In Aach in December, humidity is 93%. With an average temperature of 4°C (39°F), this humidity feels like a damp, chilly blanket that clings to your skin, making outdoor exploration uncomfortable and necessitating extra layers to stay warm and dry.
In Aach 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 Aach.
UV Risk Categories
Weather in Aach varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Aach, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 77 mm (3.0 inches) | 91% | low |
| February Weather | 3°C (38°F) | 80 mm (3.1 inches) | 90% | moderate |
| March Weather | 6°C (43°F) | 91 mm (3.6 inches) | 88% | moderate |
| April Weather | 9°C (49°F) | 43 mm (1.7 inches) | 84% | high |
| May Weather | 13°C (55°F) | 79 mm (3.1 inches) | 81% | very high |
| June Weather | 18°C (64°F) | 76 mm (3.0 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 73 mm (2.9 inches) | 82% | very high |
| August Weather | 18°C (65°F) | 65 mm (2.6 inches) | 80% | high |
| September Weather | 14°C (58°F) | 64 mm (2.5 inches) | 83% | high |
| October Weather | 10°C (51°F) | 79 mm (3.1 inches) | 89% | moderate |
| November Weather | 5°C (42°F) | 71 mm (2.8 inches) | 91% | low |
| December Weather | 4°C (39°F) | 131 mm (5.2 inches) | 93% | low |