Brussels in September
In September, Brussels averages 19°C (66°F) during the day and 11°C (52°F) at night, with around 12 days of rain (70 mm total).
Conditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Brussels, with some rain to plan around.
19°C
Avg high
11°C
Avg low
12
Rain days
70 mm
Rainfall
Brussels in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 43°F | 1°C / 34°F | 75 mm | 15 | 0 |
| February | 7°C / 45°F | 1°C / 34°F | 65 mm | 12 | 0 |
| March | 11°C / 52°F | 3°C / 37°F | 65 mm | 13 | 0 |
| April | 14°C / 57°F | 5°C / 41°F | 55 mm | 12 | 0 |
| May | 18°C / 64°F | 9°C / 48°F | 70 mm | 12 | 0 |
| June | 21°C / 70°F | 12°C / 54°F | 75 mm | 12 | 0 |
| July | 23°C / 73°F | 14°C / 57°F | 75 mm | 12 | 0 |
| August | 23°C / 73°F | 14°C / 57°F | 80 mm | 12 | 0 |
| September | 19°C / 66°F | 11°C / 52°F | 70 mm | 12 | 0 |
| October | 15°C / 59°F | 8°C / 46°F | 75 mm | 13 | 0 |
| November | 9°C / 48°F | 4°C / 39°F | 80 mm | 13 | 0 |
| December | 7°C / 45°F | 2°C / 36°F | 80 mm | 14 | 0 |
Other cities with similar September weather
Check the live 10-day forecast and sunrise/sunset.