Last updated: August 23, 2025
In December, the average temperature in Tonnoy, France hovers around 4°C (40°F). While you might experience chilly nights with a minimum of -6°C (22°F), the days can reach up to a pleasant 14°C (57°F). Be prepared for a bit of rain, as precipitation averages 117 mm (4.6 in) over 19 days. Additionally, expect a high average humidity of 93%, making it feel quite brisk!
In December in Tonnoy, the average temperature is 4°C (40°F). Maximum temperatures can reach 14°C (57°F), while minimums can drop as low as -6°C (22°F). Visitors should prepare for a chilly climate and pack accordingly, ensuring warmth for outdoor adventures.
In Tonnoy in December, the total precipitation amount is 117 mm (4.6 in), which falls over the course of 19 days.
In Tonnoy in December, humidity is 93%. With an average temperature of 4°C (40°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and requiring extra layers to stay warm, as every step can feel heavy in the thick, moisture-laden air.
In Tonnoy 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 Tonnoy.
UV Risk Categories
Weather in Tonnoy varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tonnoy, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (37°F) | 83 mm (3.3 inches) | 91% | low |
| February Weather | 5°C (41°F) | 80 mm (3.1 inches) | 90% | moderate |
| March Weather | 7°C (45°F) | 80 mm (3.1 inches) | 88% | moderate |
| April Weather | 10°C (51°F) | 44 mm (1.7 inches) | 84% | high |
| May Weather | 14°C (57°F) | 85 mm (3.3 inches) | 81% | very high |
| June Weather | 19°C (66°F) | 77 mm (3.0 inches) | 82% | very high |
| July Weather | 20°C (69°F) | 63 mm (2.5 inches) | 82% | very high |
| August Weather | 20°C (68°F) | 53 mm (2.1 inches) | 80% | very high |
| September Weather | 16°C (61°F) | 53 mm (2.1 inches) | 83% | high |
| October Weather | 12°C (53°F) | 66 mm (2.6 inches) | 89% | moderate |
| November Weather | 6°C (43°F) | 75 mm (3.0 inches) | 91% | low |
| December Weather | 4°C (40°F) | 117 mm (4.6 inches) | 93% | low |