Last updated: August 22, 2025
In December, the average temperature in Sint-Andries, Belgium is a cool 7°C (44°F). Expect chilly days where the temperature can dip to a minimum of -2°C (29°F) and occasionally rise to a pleasant 14°C (57°F). Be prepared for 100 mm (3.9 in) of precipitation over about 17 days, contributing to an average humidity of a high 92%.
In December in Sint-Andries, the average temperature is 7°C (44°F). Maximums can reach 14°C (57°F), while minimums can be as low as -2°C (29°F). Be sure to pack layers for your travels, as the weather can vary significantly throughout the day.
In Sint-Andries in December, the precipitation amount is 100 mm (3.9 in) over the course of 17 days.
In Sint-Andries in December, humidity is 92%. With an average temperature of 7°C (44°F), this humidity feels like an oppressive blanket, making outdoor activities uncomfortable and travel cumbersome as the dampness seeps into your clothes and chills your bones.
In Sint-Andries 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 Sint-Andries.
UV Risk Categories
Weather in Sint-Andries varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sint-Andries, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 65 mm (2.5 inches) | 91% | low |
| February Weather | 6°C (43°F) | 61 mm (2.4 inches) | 89% | low |
| March Weather | 7°C (46°F) | 64 mm (2.5 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 39 mm (1.5 inches) | 85% | moderate |
| May Weather | 13°C (56°F) | 54 mm (2.1 inches) | 82% | high |
| June Weather | 17°C (63°F) | 61 mm (2.4 inches) | 82% | very high |
| July Weather | 18°C (66°F) | 60 mm (2.4 inches) | 80% | very high |
| August Weather | 19°C (66°F) | 74 mm (2.9 inches) | 76% | high |
| September Weather | 16°C (61°F) | 56 mm (2.2 inches) | 82% | moderate |
| October Weather | 13°C (56°F) | 89 mm (3.5 inches) | 89% | moderate |
| November Weather | 9°C (48°F) | 60 mm (2.4 inches) | 92% | low |
| December Weather | 7°C (44°F) | 100 mm (3.9 inches) | 92% | low |