September in Aalen averages a daily high of 19.8°C with nights around 8.1°C. Expect roughly 10.7 wet days totalling 59.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Aalen is May–September.
Based on ELLWANGEN RINDELBACH, GM (17.2km), 1995–2024. 30 years of September data.