Search flights, hotels & activities for Brussels
Compare flights, hotels, cars, and activities in one place.
500+airlines & travel sites compared
21,000+routes tracked
€0booking fees from us
Freeprice drop alerts
Things to Do in Brussels in September
Real historical weather for Brussels in September: average highs of 21°C and lows of 13°C, with around 62mm of rain (averaged over the last 3 years). Brussels is in Belgium.
21°C
Average high
13°C
Average low
62mm
Typical rainfall
Real things to do in Brussels in September
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad

Brussels Scavenger Hunt & Highlights Self-Guided Walking Tour
★ 5.0(7 reviews)· 3 hrs
From €3

Brussels Walking and Tasting Tour (Beers,Chocolates&Fries/Waffle)
★ 4.9(996 reviews)· 3 hrs
From €70

Brussels Highlights & Hidden Gems Private Tour with a Local Guide
★ 4.9(279 reviews)· 8 hrs
From €69

Tell Me About Brussels! | First Day Must-Do | Local Storytellers
★ 4.8(696 reviews)· 2h 30m
From €3

Historical Walking Tour: The Story of Brussels - by Legends
★ 4.8(195 reviews)· 2h 30m
From €3

Brussels: Artisanal Chocolate Tasting Tour w/ Factory Visit
★ 4.8(623 reviews)· 1h 30m
From €30

The Most Complete Tour Of Brussels
★ 4.7(1,344 reviews)· 2h 30m
From €3

Brussels Pub Crawl - Nightlife & Party Experience
★ 4.5(313 reviews)· 3h 15m
From €19

Luxembourg and Dinant Day Trip from Brussels
★ 4.1(1,555 reviews)· 12 hrs
From €67

Brussels Hidden Delights A Self Guided Epicurean Adventure
★ 4.0(4 reviews)· 6 hrs
From €2
Real listings from Viator, including live ratings and prices — clicking through takes you to book directly.
Plan the rest of your trip
Continue planning your trip to Brussels
Same destination, real availability — no need to search again.
FAQs — Brussels in September
Based on real historical data (averaged over the last 3 years), expect highs around 21°C and lows around 13°C, with roughly 62mm of rain.