Last updated: August 23, 2025
In December, the average temperature in Mantes-la-Jolie, France hovers around 6°C (43°F). Expect a chilly range, with minimums dipping to -3°C (27°F) and maximums reaching up to 15°C (60°F). Prepare for some wet days, as 100 mm (4.0 in) of precipitation may fall over approximately 18 days, all while being enveloped in a high average humidity of 93%.
In December in Mantes-la-Jolie, the average temperature is 6°C (43°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -3°C (27°F). Be prepared for a range of temperatures and pack accordingly for your trip!
In Mantes-la-Jolie in December, the precipitation amount is 100 mm (4.0 in) spread over 18 days.
In Mantes-la-Jolie in December, humidity is 93%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel particularly uncomfortable and the air feel heavy, as though every step is met with resistance.
In Mantes-la-Jolie 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 Mantes-la-Jolie.
UV Risk Categories
Weather in Mantes-la-Jolie varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mantes-la-Jolie, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 53 mm (2.1 inches) | 91% | low |
| February Weather | 6°C (43°F) | 66 mm (2.6 inches) | 89% | moderate |
| March Weather | 8°C (47°F) | 77 mm (3.0 inches) | 85% | moderate |
| April Weather | 11°C (51°F) | 36 mm (1.4 inches) | 84% | high |
| May Weather | 14°C (57°F) | 78 mm (3.1 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 81 mm (3.2 inches) | 80% | very high |
| July Weather | 20°C (68°F) | 46 mm (1.8 inches) | 73% | very high |
| August Weather | 19°C (67°F) | 59 mm (2.3 inches) | 68% | very high |
| September Weather | 16°C (61°F) | 40 mm (1.6 inches) | 76% | high |
| October Weather | 13°C (55°F) | 78 mm (3.1 inches) | 88% | moderate |
| November Weather | 8°C (46°F) | 67 mm (2.6 inches) | 92% | low |
| December Weather | 6°C (43°F) | 100 mm (4.0 inches) | 93% | low |