September in Freiburg averages a daily high of 21.7°C with nights around 10.7°C. Expect roughly 10.7 wet days totalling 73.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Freiburg is May–September.
Based on FREIBURG, GM (3.4km), 1995–2024. 30 years of September data.