Last updated: August 23, 2025
In December, the average temperature in Mercury, France hovers around 0°C (32°F). Expect a chilly atmosphere, with minimums dropping to a brisk -15°C (6°F) and maximums reaching a mild 12°C (54°F). Prepare for rain, as 255 mm (10.0 in) of precipitation typically falls over 17 days. With an average humidity level of 90%, be ready for a damp and cool experience!
In December in Mercury, the average temperature is 0°C (32°F). Maximums can reach 12°C (54°F), and minimums can be as low as -15°C (6°F). Be prepared for chilly conditions and pack accordingly for your travels!
In Mercury in December, the total precipitation amount reaches 255 mm (10.0 in) over the course of 17 days.
In Mercury in December, humidity is 90%. With an average temperature of 0°C (32°F), this humidity feels like an icy grip on your skin, making the air feel heavy and damp, which can turn traveling into a chilling experience where every step is met with a bone-cold embrace.
In Mercury 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 Mercury, you can visit Hourly UV Index in Mercury.
UV Risk Categories
Weather in Mercury varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mercury, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 140 mm (5.5 inches) | 91% | moderate |
| February Weather | 2°C (36°F) | 120 mm (4.7 inches) | 87% | moderate |
| March Weather | 5°C (41°F) | 157 mm (6.2 inches) | 84% | high |
| April Weather | 9°C (48°F) | 82 mm (3.2 inches) | 83% | very high |
| May Weather | 12°C (54°F) | 205 mm (8.1 inches) | 78% | very high |
| June Weather | 17°C (62°F) | 148 mm (5.8 inches) | 75% | very high |
| July Weather | 18°C (65°F) | 108 mm (4.3 inches) | 72% | very high |
| August Weather | 18°C (64°F) | 113 mm (4.4 inches) | 63% | very high |
| September Weather | 14°C (57°F) | 84 mm (3.3 inches) | 73% | high |
| October Weather | 9°C (49°F) | 117 mm (4.6 inches) | 89% | moderate |
| November Weather | 4°C (40°F) | 115 mm (4.5 inches) | 90% | moderate |
| December Weather | 0°C (32°F) | 255 mm (10.0 inches) | 90% | low |