Brussels weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Brussels September weather at a glance
In September, Brussels averages 15.7°C, with typical highs of 19.9°C and lows of 12.2°C. The historical average is 12 wet days and 76% humidity.
Brussels September temperature & humidity
Brussels September rain & wet days
Pack a compact umbrella. Keep an indoor stop available between outdoor activities.
What to wear in Brussels in September
T-shirts or long sleeves with one light outer layer should be comfortable. Showers are possible, so a compact umbrella is useful.
- DaytimeLong sleeves and a light jacket · average high 19.9°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 12.2°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
Coupang affiliate links · We earn a commission on purchases. Products are sold on the Korean Coupang store.
Brussels September sunrise & sunset times
2026 September · Local time (Europe/Brussels)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:56 | 20:28 | 13h 32m |
| 2026-09-15 | 07:18 | 19:57 | 12h 39m |
| 2026-09-30 | 07:41 | 19:23 | 11h 42m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Brussels travel updates
Watch live CCTV
- Grand Place, BrusselsCity of Brussels · Live video
Check the camera timestamp at the source.
Today’s weather and forecast
Check temperature, rain and wind in Windy.
Forecast · Windy. Monthly averages are in the Temperature section.
Brussels news search
Search for recent news and check publication dates before you travel.
Brussels city map
This map shows the city area, not a specific meeting point.
Brussels travel essentials
Popular MyRealTrip products · city search, sorted by sales · Product names are in Korean.
- Travel SIM card
[유럽 유심] Three Mobile 30일 총 6~30GB 통화 무제한 공항수령Book now ↗ - [공식 판매처] 2026 인터레일 글로벌 모바일 패스 (플렉시/비연속) | 구 유레일패스Book now ↗
- Travel SIM card
[유럽 유심]Three Mobile 30일 6GB~30GB 택배/ 홍대매장 방문수령 가능Book now ↗ - Travel tour
벨기에 당일 투어 (파리 출발) : 브뤼셀 + 브뤼헤 / [숙소샌딩]Book now ↗ - Travel tour
[ 소규모 벤투어] 벨기에 감성투어(브뤼셀&브뤼헤)+파리시내 샌딩무료Book now ↗
Explore with Klook
Klook.comAffiliate widget · We may earn a commission on bookings.
Brussels hotel search · Trip.com
Search hotels by destination, dates and number of guests. The Trip.com widget is in Korean.
Affiliate widget · A qualifying booking may earn us a commission. Trip.com may use cookies in this search widget.
Best months to visit Brussels
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Brussels weather like in September?
In September, Brussels averages 15.7°C, with typical highs of 19.9°C and lows of 12.2°C. The historical average is 12 wet days and 76% humidity. Our weather-comfort rating for this month is fair.
Does it rain a lot in Brussels in September?
There are about 12 wet days in September. A compact umbrella is still useful.
What should I wear in Brussels in September?
T-shirts or long sleeves with one light outer layer should be comfortable. Showers are possible, so a compact umbrella is useful.
What are the best months to visit Brussels?
Recent weather data rates June, August among the more comfortable months.
Where can I check Brussels weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Brussels in September?
On 2026-09-15, calculated sunrise is 07:18 and sunset is 19:57 in local time (Europe/Brussels). Times vary by date and terrain.
Brussels weather by month
More Europe destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations