Last updated: August 22, 2025
In September, the average temperature in Cul-des-Sarts, Belgium hovers around 15°C (59°F), offering a pleasant climate for outdoor activities. However, temperatures can range from a chilly 3°C (37°F) to a balmy 33°C (91°F). Expect approximately 68 mm (2.7 in) of rainfall spread over about 10 days, contributing to an average humidity level of 81%. Whether you're enjoying sunny days or cozy, rain-kissed moments, there's something for everyone in Cul-des-Sarts!
In September in Cul-des-Sarts, the average temperature is 15°C (59°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (37°F). This variation makes it essential for travelers to pack for both warm and cool conditions.
In Cul-des-Sarts in September, the precipitation amount is 68 mm (2.7 in) over a span of 10 days.
In Cul-des-Sarts in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.
In Cul-des-Sarts in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Cul-des-Sarts.
UV Risk Categories
Weather in Cul-des-Sarts varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cul-des-Sarts, 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 |