Last updated: June 24, 2025
In Luxemburg, United States, the average temperature in December hovers around -2°C (28°F). Expect chilly days where temperatures can drop to a biting -26°C (-15°F), while the mercury might rise to a mild 17°C (63°F) at times. With 54 mm (2.1 in) of precipitation spread over 7 days, be prepared for some wet weather. Embrace the crisp air, as the average humidity sits at a notable 87%.
In December in Luxemburg, the average temperature is -2°C (28°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and dress in layers to ensure comfort throughout their activities.
In Luxemburg in December, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.
In Luxemburg in December, humidity is 87%. With an average temperature of -2°C (28°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and requiring extra layers to stay warm and comfortable while traveling.
In Luxemburg in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Luxemburg, you can visit Hourly UV Index in Luxemburg.
UV Risk Categories
Weather in Luxemburg varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Luxemburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 42 mm (1.6 inches) | 89% | low |
| February Weather | -6°C (22°F) | 48 mm (1.9 inches) | 90% | moderate |
| March Weather | 1°C (33°F) | 59 mm (2.3 inches) | 87% | moderate |
| April Weather | 6°C (43°F) | 98 mm (3.9 inches) | 84% | high |
| May Weather | 13°C (56°F) | 103 mm (4.1 inches) | 77% | very high |
| June Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
| July Weather | 22°C (72°F) | 104 mm (4.1 inches) | 74% | very high |
| August Weather | 21°C (70°F) | 102 mm (4.0 inches) | 73% | very high |
| September Weather | 17°C (63°F) | 67 mm (2.6 inches) | 78% | high |
| October Weather | 10°C (51°F) | 96 mm (3.8 inches) | 84% | moderate |
| November Weather | 2°C (36°F) | 47 mm (1.9 inches) | 89% | moderate |
| December Weather | -2°C (28°F) | 54 mm (2.1 inches) | 87% | low |