Last updated: August 22, 2025
In December, the average temperature in Bertem, Belgium is a cool 5°C (42°F), with a minimum dipping to -5°C (24°F) and a maximum reaching 15°C (59°F). Expect 96 mm (3.8 in) of precipitation spread over 16 days, accompanied by a high average humidity level of 92%. Be prepared for a wet and chilly experience!
In December in Bertem, the average temperature is 5°C (42°F), with maximums reaching up to 15°C (59°F) and minimums dropping as low as -5°C (24°F). Travelers should be prepared for chilly weather and pack accordingly for varying temperatures throughout the day.
In Bertem in December, the total precipitation amount is 96 mm (3.8 in) recorded over 16 days.
In Bertem 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 Bertem 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 Bertem.
UV Risk Categories
Weather in Bertem varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bertem, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 65 mm (2.6 inches) | 91% | low |
| February Weather | 5°C (42°F) | 71 mm (2.8 inches) | 89% | low |
| March Weather | 7°C (45°F) | 72 mm (2.8 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 37 mm (1.4 inches) | 85% | moderate |
| May Weather | 13°C (57°F) | 62 mm (2.4 inches) | 82% | high |
| June Weather | 18°C (65°F) | 75 mm (3.0 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 78 mm (3.1 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 88 mm (3.5 inches) | 76% | high |
| September Weather | 15°C (60°F) | 60 mm (2.4 inches) | 82% | moderate |
| October Weather | 12°C (54°F) | 81 mm (3.2 inches) | 89% | moderate |
| November Weather | 7°C (45°F) | 57 mm (2.3 inches) | 92% | low |
| December Weather | 5°C (42°F) | 96 mm (3.8 inches) | 92% | low |