Last updated: August 22, 2025
In December, the average temperature in Haaltert, Belgium hovers around 6°C (43°F), with a minimum of -4°C (25°F) and a maximum reaching 15°C (59°F). Expect 89 mm (3.5 in) of precipitation over 16 days, contributing to an average humidity of 92%. Be prepared for a wet and chilly month!
In December in Haaltert, the average temperature hovers around 6°C (43°F), with maximums reaching up to 15°C (59°F) and minimums dipping as low as -4°C (25°F). Be prepared for chilly weather during your travels!
In Haaltert in December, the precipitation amount is 89 mm (3.5 in) over the course of 16 days.
In Haaltert in December humidity is 92%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps through your clothes, making outdoor activities uncomfortable and requiring extra layers for warmth while navigating the slick streets.
In Haaltert 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 Haaltert.
UV Risk Categories
Weather in Haaltert varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Haaltert, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 62 mm (2.5 inches) | 91% | low |
| February Weather | 6°C (42°F) | 65 mm (2.6 inches) | 89% | low |
| March Weather | 7°C (46°F) | 68 mm (2.7 inches) | 87% | moderate |
| April Weather | 10°C (51°F) | 39 mm (1.5 inches) | 85% | moderate |
| May Weather | 14°C (57°F) | 59 mm (2.3 inches) | 82% | high |
| June Weather | 18°C (65°F) | 63 mm (2.5 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 66 mm (2.6 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 73 mm (2.9 inches) | 76% | high |
| September Weather | 16°C (60°F) | 52 mm (2.1 inches) | 82% | moderate |
| October Weather | 13°C (55°F) | 81 mm (3.2 inches) | 89% | moderate |
| November Weather | 8°C (46°F) | 53 mm (2.1 inches) | 92% | low |
| December Weather | 6°C (43°F) | 89 mm (3.5 inches) | 92% | low |