Last updated: August 23, 2025
In December, the average temperature in Saint-Jean-le-Blanc, France hovers around 6°C (43°F), with a minimum dipping to -4°C (25°F) and a maximum reaching up to 16°C (60°F). Expect 99 mm (3.9 in) of precipitation spread over approximately 18 days, contributing to a notably high average humidity of 93%.
In December in Saint-Jean-le-Blanc, the average temperature is 6°C (43°F), with maximums reaching 16°C (60°F) and minimums dipping as low as -4°C (25°F). It's advisable to pack layers and a warm coat to comfortably enjoy your travels during this chilly season.
In Saint-Jean-le-Blanc in December, the precipitation amount is 99 mm (3.9 in) spread over 18 days.
In Saint-Jean-le-Blanc 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 Saint-Jean-le-Blanc 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 Saint-Jean-le-Blanc.
UV Risk Categories
Weather in Saint-Jean-le-Blanc varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint-Jean-le-Blanc, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 61 mm (2.4 inches) | 90% | low |
| February Weather | 6°C (44°F) | 65 mm (2.6 inches) | 88% | moderate |
| March Weather | 8°C (48°F) | 71 mm (2.8 inches) | 85% | moderate |
| April Weather | 11°C (53°F) | 33 mm (1.3 inches) | 83% | high |
| May Weather | 15°C (59°F) | 82 mm (3.2 inches) | 83% | very high |
| June Weather | 19°C (67°F) | 68 mm (2.7 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 49 mm (1.9 inches) | 71% | very high |
| August Weather | 20°C (69°F) | 47 mm (1.8 inches) | 68% | very high |
| September Weather | 17°C (63°F) | 51 mm (2.0 inches) | 76% | high |
| October Weather | 13°C (55°F) | 75 mm (2.9 inches) | 87% | moderate |
| November Weather | 8°C (46°F) | 68 mm (2.7 inches) | 91% | low |
| December Weather | 6°C (43°F) | 99 mm (3.9 inches) | 93% | low |