Last updated: August 22, 2025
In September, the average temperature in Heist-op-den-Berg, Belgium hovers around 16°C (60°F), showcasing a comfortable climate. However, be prepared for temperature swings, with a minimum of 3°C (38°F) and a maximum that can reach up to 34°C (93°F). During this time, expect about 53 mm (2.1 in) of precipitation spread across 10 days, and with an average humidity of 82%, it’s wise to plan for a few damp days ahead!
In September in Heist-op-den-Berg, 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 Heist-op-den-Berg in September, the precipitation amount is 53 mm (2.1 in) spread over a duration of 10 days.
In Heist-op-den-Berg 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 Heist-op-den-Berg 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 Heist-op-den-Berg.
UV Risk Categories
Weather in Heist-op-den-Berg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Heist-op-den-Berg, 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) | 69 mm (2.7 inches) | 89% | low |
| March Weather | 7°C (46°F) | 70 mm (2.8 inches) | 87% | moderate |
| April Weather | 10°C (51°F) | 34 mm (1.3 inches) | 85% | moderate |
| May Weather | 14°C (57°F) | 60 mm (2.3 inches) | 82% | high |
| June Weather | 19°C (66°F) | 68 mm (2.7 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 75 mm (2.9 inches) | 80% | very high |
| August Weather | 19°C (67°F) | 76 mm (3.0 inches) | 76% | high |
| September Weather | 16°C (60°F) | 53 mm (2.1 inches) | 82% | moderate |
| October Weather | 12°C (55°F) | 78 mm (3.1 inches) | 89% | moderate |
| November Weather | 7°C (46°F) | 54 mm (2.1 inches) | 92% | low |
| December Weather | 6°C (42°F) | 91 mm (3.6 inches) | 92% | low |