Last updated: August 23, 2025
In December, the average temperature in Grenzach-Wyhlen, Germany hovers around 3°C (38°F), with daily fluctuations ranging from a chilly -5°C (24°F) to a mild 14°C (58°F). Expect significant precipitation totaling 124 mm (4.9 in) over approximately 18 days, accompanied by a high average humidity of 90%. Make sure to prepare for a wet and cool month!
In December in Grenzach-Wyhlen, the average temperature is 3°C (38°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -5°C (24°F). It's best to pack warm clothing and be prepared for chilly weather if you're planning to travel during this time.
In Grenzach-Wyhlen in December, the precipitation amount is 124 mm (4.9 in) over a span of 18 days.
In Grenzach-Wyhlen in December humidity is 90%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill wrapping around you, making travel uncomfortable as the cold penetrates your clothing while the heavy moisture lingers in the air.
In Grenzach-Wyhlen 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 Grenzach-Wyhlen.
UV Risk Categories
Weather in Grenzach-Wyhlen varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grenzach-Wyhlen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 89 mm (3.5 inches) | 92% | low |
| February Weather | 4°C (39°F) | 75 mm (2.9 inches) | 89% | moderate |
| March Weather | 6°C (44°F) | 87 mm (3.4 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 59 mm (2.3 inches) | 84% | high |
| May Weather | 14°C (57°F) | 126 mm (5.0 inches) | 80% | very high |
| June Weather | 19°C (66°F) | 120 mm (4.7 inches) | 82% | very high |
| July Weather | 20°C (69°F) | 122 mm (4.8 inches) | 83% | very high |
| August Weather | 20°C (68°F) | 115 mm (4.5 inches) | 80% | very high |
| September Weather | 16°C (61°F) | 69 mm (2.7 inches) | 83% | high |
| October Weather | 11°C (52°F) | 89 mm (3.5 inches) | 90% | moderate |
| November Weather | 5°C (42°F) | 73 mm (2.9 inches) | 88% | low |
| December Weather | 3°C (38°F) | 124 mm (4.9 inches) | 90% | low |