Last updated: August 22, 2025
In December, the average temperature in Kalmthout, Belgium hovers around 6°C (43°F), with minimums dipping to -4°C (25°F) and maximums reaching 15°C (59°F). This month sees 92 mm (3.6 in) of precipitation spread across 17 days, contributing to a high average humidity of 92%. Be prepared for a chilly and damp experience!
In December in Kalmthout, 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 Kalmthout in December, the precipitation amount is 92 mm (3.6 in) spread over 17 days.
In Kalmthout 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 Kalmthout 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 Kalmthout.
UV Risk Categories
Weather in Kalmthout varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kalmthout, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 63 mm (2.5 inches) | 91% | low |
| February Weather | 5°C (42°F) | 66 mm (2.6 inches) | 89% | low |
| March Weather | 7°C (45°F) | 70 mm (2.7 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 40 mm (1.6 inches) | 85% | moderate |
| May Weather | 14°C (57°F) | 64 mm (2.5 inches) | 82% | high |
| June Weather | 18°C (65°F) | 70 mm (2.8 inches) | 82% | very high |
| July Weather | 19°C (66°F) | 82 mm (3.2 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 80 mm (3.1 inches) | 76% | high |
| September Weather | 15°C (60°F) | 61 mm (2.4 inches) | 82% | moderate |
| October Weather | 12°C (55°F) | 87 mm (3.4 inches) | 89% | moderate |
| November Weather | 8°C (46°F) | 55 mm (2.2 inches) | 92% | low |
| December Weather | 6°C (43°F) | 92 mm (3.6 inches) | 92% | low |