Last updated: August 22, 2025
In Westerlo, Belgium, the average temperature in September hovers around 16°C (60°F), providing a mild climate. Expect temperatures to range from a cool 3°C (38°F) to a warm 34°C (93°F). With an average precipitation of 57 mm (2.2 in) spread over 10 days, you might want to keep an umbrella handy. The atmosphere is further enhanced by an average humidity of 82%, adding a touch of tropical feel to your stay.
In September in Westerlo, the average temperature is 16°C (60°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as 3°C (38°F). This makes it an ideal time to visit for those who enjoy mild weather and a range of outdoor activities.
In Westerlo in September, the precipitation amount is 57 mm (2.2 in) over a span of 10 days.
In Westerlo in September humidity is 82%. With an average temperature of 16°C (60°F), this humidity feels like walking through a warm, thick blanket that clings to your skin, making every step feel heavier and travel more exhausting.
In Westerlo 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 Westerlo.
UV Risk Categories
Weather in Westerlo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Westerlo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 64 mm (2.5 inches) | 91% | low |
| February Weather | 5°C (42°F) | 71 mm (2.8 inches) | 89% | low |
| March Weather | 7°C (46°F) | 73 mm (2.9 inches) | 87% | moderate |
| April Weather | 10°C (51°F) | 33 mm (1.3 inches) | 85% | moderate |
| May Weather | 14°C (57°F) | 63 mm (2.5 inches) | 82% | high |
| June Weather | 19°C (66°F) | 73 mm (2.9 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 79 mm (3.1 inches) | 80% | very high |
| August Weather | 19°C (67°F) | 78 mm (3.1 inches) | 76% | high |
| September Weather | 16°C (60°F) | 57 mm (2.2 inches) | 82% | moderate |
| October Weather | 12°C (55°F) | 82 mm (3.2 inches) | 89% | moderate |
| November Weather | 7°C (46°F) | 56 mm (2.2 inches) | 92% | low |
| December Weather | 6°C (42°F) | 96 mm (3.8 inches) | 92% | low |