Last updated: August 23, 2025
In Triel-sur-Seine, France, the average temperature in December hovers around 6°C (43°F). Temperatures can dip as low as -3°C (27°F) and rise to a maximum of 15°C (59°F). This month sees significant precipitation, totaling 101 mm (4.0 in) over approximately 18 days. The air is quite humid, with an average humidity level of 93%, creating a distinct chill in the atmosphere.
In December in Triel-sur-Seine, the average temperature is 6°C (43°F). The maximum can reach 15°C (59°F), and the minimum can be as low as -3°C (27°F). Be prepared for a chilly yet refreshing atmosphere, making it ideal for outdoor activities and cozy experiences.
In Triel-sur-Seine in December, the total precipitation amount is 101 mm (4.0 in) spread over 18 days.
In Triel-sur-Seine 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 Triel-sur-Seine 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 Triel-sur-Seine.
UV Risk Categories
Weather in Triel-sur-Seine varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Triel-sur-Seine, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 54 mm (2.1 inches) | 91% | low |
| February Weather | 6°C (43°F) | 67 mm (2.6 inches) | 89% | moderate |
| March Weather | 8°C (47°F) | 76 mm (3.0 inches) | 85% | moderate |
| April Weather | 11°C (52°F) | 36 mm (1.4 inches) | 84% | high |
| May Weather | 14°C (57°F) | 73 mm (2.9 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 79 mm (3.1 inches) | 80% | very high |
| July Weather | 20°C (68°F) | 47 mm (1.8 inches) | 73% | very high |
| August Weather | 19°C (67°F) | 58 mm (2.3 inches) | 68% | very high |
| September Weather | 16°C (62°F) | 41 mm (1.6 inches) | 76% | high |
| October Weather | 13°C (55°F) | 77 mm (3.0 inches) | 88% | moderate |
| November Weather | 8°C (46°F) | 65 mm (2.6 inches) | 92% | low |
| December Weather | 6°C (43°F) | 101 mm (4.0 inches) | 93% | low |