September in Detmold averages a daily high of 19.4°C with nights around 10.1°C. Expect roughly 12.6 wet days totalling 75.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Detmold is May–September.
Based on BAD LIPPSPRINGE, GM (17km), 1995–2024. 30 years of September data.