Last updated: August 22, 2025
In December, the average temperature in Masnuy-Saint-Jean, Belgium hovers around 5°C (42°F), with fluctuations ranging from a chilly -4°C (25°F) to a mild 15°C (58°F). Expect 100 mm (4.0 in) of precipitation spread over approximately 17 days, leading to a notably high average humidity of 92%. Prepare for a damp and cool atmosphere as you enjoy your time in this vibrant locale!
In December in Masnuy-Saint-Jean, the average temperature is 5°C (42°F). The maximum can reach 15°C (58°F), and the minimum can be as low as -4°C (25°F). This variation in temperature means visitors should be prepared for both mild daytime warmth and chilly nights.
In Masnuy-Saint-Jean in December, the precipitation amount is 100 mm (4.0 in) over a span of 17 days.
In Masnuy-Saint-Jean in December, humidity is 92%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.
In Masnuy-Saint-Jean 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 Masnuy-Saint-Jean.
UV Risk Categories
Weather in Masnuy-Saint-Jean varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Masnuy-Saint-Jean, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 67 mm (2.6 inches) | 91% | low |
| February Weather | 5°C (42°F) | 72 mm (2.9 inches) | 89% | low |
| March Weather | 7°C (45°F) | 74 mm (2.9 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 39 mm (1.5 inches) | 85% | moderate |
| May Weather | 13°C (56°F) | 61 mm (2.4 inches) | 82% | high |
| June Weather | 18°C (64°F) | 60 mm (2.4 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 65 mm (2.6 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 79 mm (3.1 inches) | 76% | high |
| September Weather | 15°C (60°F) | 53 mm (2.1 inches) | 82% | moderate |
| October Weather | 12°C (54°F) | 78 mm (3.1 inches) | 89% | moderate |
| November Weather | 7°C (45°F) | 60 mm (2.4 inches) | 92% | low |
| December Weather | 5°C (42°F) | 100 mm (4.0 inches) | 92% | low |