Month guide · Brussels · Belgium
Brussels in September
What September is really like in Brussels: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Unknown author, CC BY-SA 3.0
.JPG){kind=link}
Quick answer
September is one of the best months to visit Brussels. Expect average highs of 19°C (66°F), lows of 11°C (52°F), about 10 rainy days and roughly 12.5 hours of daylight. Often settled and mild; the city returns to full activity and EU business travel pushes up midweek hotel rates.
Key facts
- Average high / low
- 19°C (66°F) / 11°C (52°F)
- Rainy days
- About 10
- Daylight
- About 12.5 hours
- Crowds
- Moderate
- Hotel prices
- High
Weather in September
September is the 5th-warmest month in Brussels: days average 19°C (66°F) against a yearly average high of 15°C (59°F), and nights fall to about 11°C (52°F). Rain falls on roughly 10 of its 30 days. Compared with August (23°C (73°F)), September is cooler; by October highs drop to around 15°C (59°F).
- Sunrise (15 September)
- About 07:18
- Sunset (15 September)
- About 19:57
- Daylight
- About 12.5 hours
Autumn (September–November). Mild September with heritage events, then cooler, wetter months with autumn colour in the city's forests.
Crowds and prices
On a 1–5 scale, September rates 3 for crowds (the peak is June at 4) and 4 for hotel prices (highest in June). Book accommodation early: September is one of the pricier months.
Events in September
- Heritage Days — free entry to normally closed buildings (usually a September weekend)
- Car-free Sunday — central Brussels closed to traffic (usually mid to late September)
- Comic Strip Festival (usually September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Museum · Sablon and Mont des Arts
Royal Museums of Fine Arts of Belgium
Head first to the Bruegel rooms, then follow the chronological route through Rubens's large canvases.
- Time needed
- 2–3 hours
- Cost
- Mid-priced
- Art
- History
- Rainy day
- Iconic
Gallery · Sablon and Mont des Arts
Magritte Museum
The largest collection of works by the Belgian surrealist René Magritte, from early advertising designs to bowler-hatted men, pipes and floating stones, is arranged over several floors with letters, photographs and films that explain his life in Brussels.
- Time needed
- 1.5 hours
- Cost
- Mid-priced
- Art
- Rainy day
- Couples
_-_Interior_view_of_the_Italianate_arcade_with_a_glass-paned_barrel-vaulted_roof_(3).jpg){kind=link}
Architecture · Grand-Place and Îlot Sacré
Royal Saint-Hubert Galleries
Walk through on a rainy day and stop for a hot chocolate at one of the arcade cafés.
- Time needed
- 30–45 minutes
- Cost
- Free
- Free
- Architecture
- Shopping
- Rainy day
- Food
.jpg){kind=link}
Museum · Sablon and Mont des Arts
Musical Instruments Museum
Housed in Old England, a former Art Nouveau department store of iron and glass, the museum displays instruments from around the world and across the centuries.
- Time needed
- 1.5 hours
- Cost
- Low cost
- Rainy day
- Views
- Kids
- Architecture
What to pack
For highs near 19°C, lows near 11°C and 10 wet days: layers, a warm sweater and a jacket for cool evenings; a packable rain jacket for showers; comfortable walking shoes.
Is September a good time to visit Brussels?
One of the best months to visit Brussels, with 3 notable events on the calendar. The other best months are May–June. Compare every month.
Brussels in other months
Questions travellers ask
+Is September a good time to visit Brussels?
It is one of the best months to visit Brussels. Often settled and mild; the city returns to full activity and EU business travel pushes up midweek hotel rates.
+How warm is Brussels in September?
Average highs are around 19°C (66°F) and lows around 11°C (52°F).
+Does it rain a lot in Brussels in September?
Expect rain on about 10 days of the month.