Weather in Brussels for September 2027
In general, the average temperature in Brussels at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.2 °C by the end of September.
The climate of Brussels in September is notably wet, with an average of 12 rainy days, and a total of 64.2 mm of precipitation.
Is September a good time to visit Brussels? check out the best time to travel to Brussels page.
Temperatures
Rain 🌧️
More
Brussels Weather September
Temperatures trend during September in Brussels
September weather in Brussels day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 24° /14° | 6.7 mm | 5.8 | |
| 2 Sept. |  Patchy rain possible | 24° /15° | 1.1 mm | 5 | |
| 3 Sept. | Patchy rain possible | 23° /14° | 1.1 mm | 5 | |
| 4 Sept. |  Sunny | 24° /14° | 0.9 mm | 5 | |
| 5 Sept. | Light rain | 24° /14° | 3.4 mm | 5.5 | |
| 6 Sept. | Light rain | 25° /14° | 3 mm | 5 | |
| 7 Sept. | Sunny | 28° /15° | 0.8 mm | 5.3 | |
| 8 Sept. | Light rain | 24° /16° | 2.7 mm | 5 | |
| 9 Sept. | Light rain | 20° /14° | 2.9 mm | 4 | |
| 10 Sept. | Patchy rain possible | 22° /14° | 1.5 mm | 5 | |
| 11 Sept. | Patchy rain possible | 21° /13° | 2.3 mm | 4 | |
| 12 Sept. | Light rain shower | 21° /12° | 0.5 mm | 4.9 | |
| 13 Sept. |  Moderate or heavy rain shower | 19° /12° | 5.9 mm | 4 | |
| 14 Sept. | Light rain | 20° /13° | 3.5 mm | 4 | |
| 15 Sept. | Patchy rain possible | 22° /13° | 1.2 mm | 4 | |
| 16 Sept. | Patchy rain possible | 20° /12° | 1.2 mm | 4.5 | |
| 17 Sept. | Patchy rain possible | 20° /12° | 1.2 mm | 4 | |
| 18 Sept. | Patchy rain possible | 21° /12° | 0.9 mm | 4.3 | |
| 19 Sept. |  Overcast | 22° /12° | 0.2 mm | 4.2 | |
| 20 Sept. | Patchy rain possible | 20° /13° | 1.5 mm | 4 | |
| 21 Sept. | Light rain | 19° /11° | 3.1 mm | 4 | |
| 22 Sept. | Patchy rain possible | 19° /10° | 0.5 mm | 4 | |
| 23 Sept. | Light rain | 19° /10° | 2.8 mm | 3.9 | |
| 24 Sept. | Patchy rain possible | 18° /11° | 1.7 mm | 3.8 | |
| 25 Sept. | Light rain | 19° /11° | 3.6 mm | 3.7 | |
| 26 Sept. | Light rain | 19° /12° | 3.2 mm | 3.6 | |
| 27 Sept. | Light rain | 18° /11° | 2.6 mm | 3.6 | |
| 28 Sept. | Patchy rain possible | 17° /10° | 1.9 mm | 3.5 | |
| 29 Sept. | Patchy rain possible | 19° /10° | 1.1 mm | 3.4 | |
| 30 Sept. | Patchy rain possible | 18° /10° | 1.3 mm | 3.3 | |
| Next | |||||
Guide for Brussels in September
In September, Brussels, Belgium experiences a transition from the lingering warmth of summer to the cooler temperatures of autumn. At the beginning of the month, the weather in Brussels is generally mild and pleasant, with average temperatures around 16°.
The city experiences a mix of sunny days and occasional rainfall, with an average of 14 rainy days throughout the month. As September progresses, the temperatures gradually begin to decrease, and by the end of the month, the average temperature in Brussels hovers around 13°.
The evenings become notably cooler, making it advisable for visitors to bring a light jacket or sweater when exploring the city after sunset.
The weather in Brussels during September is characterized by a comfortable and temperate climate, making it an ideal time to explore the city's charming streets, parks, and historic landmarks.
However, visitors should be prepared for the possibility of occasional showers, especially towards the end of the month. Overall, September offers a pleasant and inviting atmosphere for travelers to enjoy the cultural delights of Brussels.
Brussels in September - FAQ
What are the expected maximum and minimum temperatures in Brussels during September?
How much rainfall should be expected in Brussels during September?
What are the typical wind conditions in Brussels during September?
September rainfall patterns in Brussels
UV exposure in Brussels during September
Where is Brussels?Get accurate weather forecasts for Brussels, located at latitude 50.85 and longitude 4.349. Stay updated with localized weather information tailored for Brussels.