Last updated: August 27, 2025
In December, the average temperature in Mammern, Switzerland hovers around 3°C (37°F), with lows reaching a chilly -4°C (25°F) and highs peaking at a mild 13°C (56°F). During this time, the region sees approximately 109 mm (4.3 in) of precipitation spread over 18 days, contributing to an average humidity level of 90%. Be prepared for a damp and cool month ahead!
In December in Mammern, the average temperature is a chilly 3°C (37°F). Maximum temperatures can reach a mild 13°C (56°F), while the minimum can drop to a brisk -4°C (25°F). It's advisable to pack warm clothing and be prepared for cold weather if you plan on traveling during this time.
In Mammern in December, the total precipitation amount is 109 mm (4.3 in) spread over 18 days.
In Mammern in December, humidity is 90%. With an average temperature of 3°C (37°F), this humidity feels like a heavy blanket wrapped around you, making travel feel cumbersome and draining, as the dampness clings to your skin and the cold bites through your layers.
In Mammern 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 Mammern.
UV Risk Categories
Weather in Mammern varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mammern, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 85 mm (3.4 inches) | 92% | low |
| February Weather | 3°C (38°F) | 68 mm (2.7 inches) | 89% | moderate |
| March Weather | 6°C (42°F) | 78 mm (3.1 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 58 mm (2.3 inches) | 84% | high |
| May Weather | 13°C (57°F) | 115 mm (4.5 inches) | 80% | very high |
| June Weather | 19°C (66°F) | 126 mm (5.0 inches) | 82% | very high |
| July Weather | 20°C (68°F) | 95 mm (3.7 inches) | 83% | very high |
| August Weather | 20°C (68°F) | 127 mm (5.0 inches) | 80% | very high |
| September Weather | 15°C (60°F) | 82 mm (3.2 inches) | 83% | high |
| October Weather | 11°C (51°F) | 90 mm (3.5 inches) | 90% | moderate |
| November Weather | 5°C (41°F) | 57 mm (2.2 inches) | 88% | low |
| December Weather | 3°C (37°F) | 109 mm (4.3 inches) | 90% | low |