Last updated: August 22, 2025
In December, the average temperature in Olloy-sur-Viroin, Belgium hovers around 4°C (40°F). Expect a chilling minimum of -4°C (25°F), while the maximum can reach a mild 14°C (57°F). With an average precipitation of 130 mm (5.1 in) spread over 19 days, you might want to keep an umbrella handy. To top it off, the air will feel notably humid with an average humidity of 93%.
In December in Olloy-sur-Viroin, the average temperature is 4°C (40°F), with maximums reaching up to 14°C (57°F) and minimums dropping as low as -4°C (25°F). Travelers should pack accordingly, as conditions can vary significantly throughout the day.
In Olloy-sur-Viroin in December, the total precipitation amount is 130 mm (5.1 in), occurring over a span of 19 days.
In Olloy-sur-Viroin in December, humidity is 93%. With an average temperature of 4°C (40°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and requiring extra layers to stay warm, as every step can feel heavy in the thick, moisture-laden air.
In Olloy-sur-Viroin 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 Olloy-sur-Viroin.
UV Risk Categories
Weather in Olloy-sur-Viroin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Olloy-sur-Viroin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 83 mm (3.3 inches) | 91% | low |
| February Weather | 4°C (40°F) | 84 mm (3.3 inches) | 89% | moderate |
| March Weather | 6°C (44°F) | 93 mm (3.7 inches) | 86% | moderate |
| April Weather | 9°C (49°F) | 49 mm (1.9 inches) | 84% | high |
| May Weather | 13°C (55°F) | 79 mm (3.1 inches) | 82% | very high |
| June Weather | 17°C (63°F) | 78 mm (3.1 inches) | 82% | very high |
| July Weather | 18°C (65°F) | 76 mm (3.0 inches) | 80% | very high |
| August Weather | 18°C (65°F) | 87 mm (3.4 inches) | 76% | high |
| September Weather | 15°C (59°F) | 68 mm (2.7 inches) | 81% | moderate |
| October Weather | 11°C (52°F) | 100 mm (3.9 inches) | 88% | moderate |
| November Weather | 6°C (43°F) | 73 mm (2.9 inches) | 92% | low |
| December Weather | 4°C (40°F) | 130 mm (5.1 inches) | 93% | low |