Weather in Bonn in September
Bonn, Germany averages a high of 19.6°C (67.3°F) and low of 11.6°C (52.9°F) in September, with 10 rain days and 8.4 hours of daily sunshine. Travel score: 72.6/100 (Good). The best time to visit Bonn is August.
High
20°C67°F
Low
12°C53°F
🌧️
10
rain days
☀️
8.4
hrs/day sunshine
💧
77%
humidity
73— Good
September in Bonn is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Bonn?
How much does it rain in Bonn in September?
Bonn receives an average of 64mm of rainfall across 10 rainy days in September. The annual total is 787.5mm.
What should I pack for Bonn in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°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
Traveling to Germany in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31