Düsseldorf weather in September
September in Düsseldorf: nice, a little rain, with very humid — an excellent time to visit.
#5 of 12 months in Düsseldorf · #262 of 604 destinations to visit in September · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Düsseldorf climate normals — September
| Daytime high | 21°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 13°C / 55°F | |
| Feels like (high) | 20°C / 68°F | |
| Rainfall | 69 mm / 2.7 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 12.6 h | |
| Wind | 15 km/h / 10 mph | |
| Air quality (US AQI) | 52 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Düsseldorf in September — FAQ
- Is September a good time to visit Düsseldorf?
- September in Düsseldorf: nice, a little rain, with very humid — an excellent time to visit. It ranks #5 of 12 months for Düsseldorf on SeasonMap's comfort score (82/100).
- What is the weather like in Düsseldorf in September?
- In September, Düsseldorf averages a daily high of 20.7°C and a low of 12.5°C, with about 68.8 mm of rain over roughly 11 rainy days.
- What is the air quality in Düsseldorf in September?
- Düsseldorf has a mean US Air Quality Index of about 52 in September.