September weather forecast
Belgium

September in Belgium marks the beginning of autumn, bringing a gradual decrease in temperatures and shorter daylight hours. Average temperatures typically range from 11°C (51.8°F) to 19°C (66.2°F), making this month noticeably cooler than August. Both coastal and inland regions, including Ostend, Brussels, and Antwerp, start to experience the onset of autumnal weather.

In the Ardennes, the lower temperatures become more evident, especially during the night. The region begins to display the classic signs of autumn, with changing foliage colours and a cooler, crisper air.

September sees an average precipitation of 50mm (1.97") to 70mm (2.76"), slightly less than the rainfall experienced in August. The rainfall often occurs in the form of light showers, giving way to periods of clear skies and pleasant weather. These conditions, combined with the changing foliage, contribute to the beautiful autumnal scenery across Belgium.

Daylight hours continue to decrease in September, with an average of 13 hours of daylight per day. While shorter than the summer months, these hours still offer plenty of opportunities for outdoor activities and sightseeing.

As September transitions into October, temperatures continue to fall, and the autumnal landscape becomes more pronounced. Despite the cooler weather, the beauty of the changing season and generally pleasant conditions make September a lovely time to visit Belgium.

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• Brussels - September »
  In Brussels, in September, during 15.7 rainfall days, 69mm (2.72") of precipitation is typically accumulated. On the last day of September, in Brussels, sunrise is at 07:42 and sunset at 19:22 CEST.
• Antwerp - September »
  On the last day of September, in Antwerp, sunrise is at 07:42 and sunset at 19:22 CEST. In September, in Antwerp the rain falls for 11.7 days.
• Ghent - September »
  The start of September in Ghent comes with a small reduction in the average high-temperature, subtly receding from an agreeable 22°C (71.6°F) in August to a comfortable 18°C (64.4°F). The high-temperature, in September, in Ghent, is 18°C (64.4°F), while the low-temperature averages to 12°C (53.6°F).
• Charleroi - September »
  The month with the least rainfall in Charleroi is September, when the rain falls for 13.3 days and typically collects 28mm (1.1") of precipitation. In Charleroi in September, it is raining for 13.3 days, with typically 28mm (1.1") of accumulated precipitation.
• Liège - September »
  In Liège, in September, during 14 rainfall days, 61mm (2.4") of precipitation is typically accumulated. September in Liège is marked by a subtle drop in average high-temperatures, transitioning from a pleasant 22°C (71.6°F) in August to an enjoyable 19°C (66.2°F).
• Bruges - September »
  Bruges measures an average high-temperature of a comfortable 18.8°C (65.8°F) in September, nearly consistent with the preceding month. In Bruges, in September, during 15.5 rainfall days, 33mm (1.3") of precipitation is typically accumulated.
• Leuven - September »
  The month with the least rainfall in Leuven is September, when the rain falls for 8.5 days and typically collects 16mm (0.63") of precipitation. In Leuven during September, the rain falls for 8.5 days and regularly aggregates up to 16mm (0.63") of precipitation.
• Aalst - September »
  On the last day of September, in Aalst, sunrise is at 07:43 and sunset at 19:23 CEST. On the first day of September in Aalst, sunrise is at 06:58 and sunset at 20:29.
• La Louvière - September »
  In La Louvière, during September, the rain falls for 11.1 days and regularly aggregates up to 28mm (1.1") of precipitation. On the first day of September in La Louvière, sunrise is at 06:58 and sunset at 20:27.