Last updated: August 23, 2025
In December, the average temperature in Vallon-en-Sully, France is a cool 6°C (43°F). Expect fluctuations, as temperatures can dip as low as -3°C (26°F) and rise up to 18°C (64°F). Prepare for frequent rain, with an average precipitation of 105 mm (4.1 in) spread across 17 days, resulting in a notably high average humidity of 93%.
In December in Vallon-en-Sully, the average temperature is 6°C (43°F), with maximums reaching up to 18°C (64°F) and minimums dropping as low as -3°C (26°F). This varied climate makes it essential for travelers to pack layers to comfortably enjoy their visit.
In Vallon-en-Sully in December, the precipitation amount is 105 mm (4.1 in) over a period of 17 days.
In Vallon-en-Sully 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 Vallon-en-Sully 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 Vallon-en-Sully, you can visit Hourly UV Index in Vallon-en-Sully.
UV Risk Categories
Weather in Vallon-en-Sully varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vallon-en-Sully, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 63 mm (2.5 inches) | 90% | low |
| February Weather | 7°C (44°F) | 58 mm (2.3 inches) | 88% | moderate |
| March Weather | 8°C (47°F) | 67 mm (2.6 inches) | 85% | moderate |
| April Weather | 11°C (53°F) | 48 mm (1.9 inches) | 83% | high |
| May Weather | 15°C (58°F) | 91 mm (3.6 inches) | 83% | very high |
| June Weather | 19°C (67°F) | 77 mm (3.0 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 57 mm (2.2 inches) | 71% | very high |
| August Weather | 21°C (69°F) | 41 mm (1.6 inches) | 68% | very high |
| September Weather | 17°C (63°F) | 61 mm (2.4 inches) | 76% | high |
| October Weather | 13°C (55°F) | 67 mm (2.6 inches) | 87% | moderate |
| November Weather | 8°C (46°F) | 68 mm (2.7 inches) | 91% | moderate |
| December Weather | 6°C (43°F) | 105 mm (4.1 inches) | 93% | low |