Weather in Brussels in September
Brussels, Belgium averages a high of 19.4°C (66.9°F) and low of 11.9°C (53.4°F) in September, with 10 rain days and 8.6 hours of daily sunshine. Travel score: 71.6/100 (Good). The best time to visit Brussels is July.
High
19°C67°F
Low
12°C53°F
🌧️
10
rain days
☀️
8.6
hrs/day sunshine
💧
77%
humidity
72— Good
September in Brussels is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Brussels?
How much does it rain in Brussels in September?
Brussels receives an average of 55.1mm of rainfall across 10 rainy days in September. The annual total is 748.8mm.
What should I pack for Brussels in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 19°C
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting Belgium in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31