Last updated: August 23, 2025
In December, the average temperature in Marthon, France hovers around 7°C (45°F). Be prepared for cool conditions, as temperatures can dip as low as -5°C (23°F) at night but may reach a pleasant 16°C (60°F) during the day. Expect 139 mm (5.5 in) of precipitation spread over approximately 17 days, contributing to a high average humidity of 92%. Pack your umbrella and layers for this wet and chilly month!
In December in Marthon, the average temperature is 7°C (45°F), with maximums reaching 16°C (60°F) and minimums dropping to as low as -5°C (23°F). Be sure to pack layers to stay comfortable while exploring the varied climate!
In Marthon in December, the precipitation amount reaches 139 mm (5.5 in) over a span of 17 days.
In Marthon in December, humidity is 92%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities feel heavier and less enjoyable for traveling.
In Marthon 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 Marthon, you can visit Hourly UV Index in Marthon.
UV Risk Categories
Weather in Marthon varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Marthon, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 75 mm (2.9 inches) | 90% | low |
| February Weather | 7°C (46°F) | 82 mm (3.2 inches) | 87% | moderate |
| March Weather | 9°C (49°F) | 92 mm (3.6 inches) | 85% | moderate |
| April Weather | 12°C (54°F) | 65 mm (2.5 inches) | 84% | high |
| May Weather | 15°C (60°F) | 106 mm (4.2 inches) | 84% | very high |
| June Weather | 19°C (67°F) | 91 mm (3.6 inches) | 82% | very high |
| July Weather | 21°C (71°F) | 58 mm (2.3 inches) | 79% | very high |
| August Weather | 21°C (70°F) | 49 mm (1.9 inches) | 75% | very high |
| September Weather | 18°C (65°F) | 58 mm (2.3 inches) | 79% | high |
| October Weather | 14°C (57°F) | 88 mm (3.5 inches) | 86% | moderate |
| November Weather | 9°C (48°F) | 81 mm (3.2 inches) | 90% | moderate |
| December Weather | 7°C (45°F) | 139 mm (5.5 inches) | 92% | low |