Last updated: August 22, 2025
In Saint-Leger, Belgium, the average temperature in December hovers around 4°C (39°F). However, temperatures can dip to a chilling -5°C (23°F) at their lowest, while the peaks can reach a mild 14°C (58°F). Expect frequent rainfall, with a total precipitation of 136 mm (5.4 in) spread over 19 days of the month. The air remains quite heavy, boasting an average humidity of 93%.
In December in Saint-Leger, the average temperature is 4°C (39°F). The maximum can reach 14°C (58°F), while the minimum can be as low as -5°C (23°F). This makes it essential for travelers to pack warm clothing and be prepared for a range of chilly weather conditions.
In Saint-Leger in December, the precipitation amount is 136 mm (5.4 in) over the course of 19 days.
In Saint-Leger in December, humidity is 93%. With an average temperature of 4°C (39°F), this humidity feels like a damp, chilly blanket that clings to your skin, making outdoor exploration uncomfortable and necessitating extra layers to stay warm and dry.
In Saint-Leger 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-Leger.
UV Risk Categories
Weather in Saint-Leger varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint-Leger, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 79 mm (3.1 inches) | 91% | low |
| February Weather | 4°C (39°F) | 83 mm (3.3 inches) | 90% | moderate |
| March Weather | 6°C (43°F) | 88 mm (3.4 inches) | 88% | moderate |
| April Weather | 10°C (49°F) | 42 mm (1.6 inches) | 84% | high |
| May Weather | 13°C (56°F) | 79 mm (3.1 inches) | 81% | very high |
| June Weather | 18°C (64°F) | 80 mm (3.1 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 73 mm (2.9 inches) | 82% | very high |
| August Weather | 19°C (66°F) | 67 mm (2.6 inches) | 80% | very high |
| September Weather | 15°C (59°F) | 70 mm (2.8 inches) | 83% | high |
| October Weather | 11°C (52°F) | 87 mm (3.4 inches) | 89% | moderate |
| November Weather | 6°C (43°F) | 75 mm (2.9 inches) | 91% | low |
| December Weather | 4°C (39°F) | 136 mm (5.4 inches) | 93% | low |