September in Erftstadt averages a daily high of 20.8°C with nights around 10.2°C. Expect roughly 11.3 wet days totalling 46.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Erftstadt is May–September.
Based on WEILERSWIST LOMMERSUM, GM (11.3km), 1995–2024. 29 years of September data.