Last updated: August 23, 2025
In December, the average temperature in Boulogne-sur-Gesse, France hovers around 7°C (46°F). Daily variations can be notable, with a minimum dipping to -4°C (26°F) and a maximum reaching up to 19°C (66°F). Expect a fair amount of rainfall, as precipitation averages 134 mm (5.3 in) spread over 15 days, while the air remains quite humid, with an average relative humidity of 88%.
In December in Boulogne-sur-Gesse, the average temperature is 7°C (46°F). The maximum can reach 19°C (66°F) and the minimum can be as low as -4°C (26°F). This variation in temperature makes it essential for travelers to pack layers to stay comfortable during their visit.
In Boulogne-sur-Gesse in December, the total precipitation amount is 134 mm (5.3 in) spread over a period of 15 days.
In Boulogne-sur-Gesse in December humidity is 88%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring you to dress in layers to stay warm and dry while exploring.
In Boulogne-sur-Gesse 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 Boulogne-sur-Gesse, you can visit Hourly UV Index in Boulogne-sur-Gesse.
UV Risk Categories
Weather in Boulogne-sur-Gesse varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Boulogne-sur-Gesse, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 82 mm (3.2 inches) | 87% | low |
| February Weather | 8°C (47°F) | 80 mm (3.1 inches) | 83% | moderate |
| March Weather | 10°C (50°F) | 81 mm (3.2 inches) | 80% | high |
| April Weather | 12°C (54°F) | 94 mm (3.7 inches) | 77% | high |
| May Weather | 16°C (60°F) | 111 mm (4.4 inches) | 75% | very high |
| June Weather | 19°C (67°F) | 112 mm (4.4 inches) | 74% | very high |
| July Weather | 21°C (71°F) | 75 mm (2.9 inches) | 72% | very high |
| August Weather | 21°C (71°F) | 68 mm (2.7 inches) | 70% | very high |
| September Weather | 18°C (66°F) | 74 mm (2.9 inches) | 73% | high |
| October Weather | 14°C (58°F) | 84 mm (3.3 inches) | 82% | moderate |
| November Weather | 9°C (48°F) | 98 mm (3.9 inches) | 87% | moderate |
| December Weather | 7°C (46°F) | 134 mm (5.3 inches) | 88% | low |