Last updated: August 22, 2025
In Opitter, Belgium, the average temperature in September hovers around 16°C (60°F). You can expect a minimum chill of 3°C (37°F) and a warm peak reaching up to 34°C (93°F). During this month, 60 mm (2.4 in) of precipitation is likely to fall over approximately 10 days, accompanied by an average humidity of 81%.
In September in Opitter, the average temperature is 16°C (60°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 3°C (37°F). Expect a mild climate with potential for warm days and cooler nights, making it a great time for exploring the area.
In Opitter in September, the precipitation amount is 60 mm (2.4 in) accumulated over a period of 10 days.
In Opitter in September, humidity is 81%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you as you travel, making you acutely aware of the sweat on your skin and creating an atmosphere that might dampen your spirits but also invites you to seek out refreshing beverages and shady spots.
In Opitter 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 Opitter.
UV Risk Categories
Weather in Opitter varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Opitter, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 65 mm (2.5 inches) | 91% | low |
| February Weather | 5°C (42°F) | 70 mm (2.8 inches) | 90% | low |
| March Weather | 7°C (45°F) | 74 mm (2.9 inches) | 87% | moderate |
| April Weather | 10°C (51°F) | 35 mm (1.4 inches) | 84% | moderate |
| May Weather | 14°C (57°F) | 56 mm (2.2 inches) | 77% | high |
| June Weather | 19°C (66°F) | 72 mm (2.9 inches) | 74% | very high |
| July Weather | 19°C (67°F) | 76 mm (3.0 inches) | 72% | very high |
| August Weather | 19°C (67°F) | 68 mm (2.7 inches) | 71% | high |
| September Weather | 16°C (60°F) | 60 mm (2.4 inches) | 81% | moderate |
| October Weather | 12°C (54°F) | 78 mm (3.1 inches) | 88% | moderate |
| November Weather | 7°C (45°F) | 54 mm (2.1 inches) | 91% | low |
| December Weather | 5°C (42°F) | 94 mm (3.7 inches) | 92% | low |