October in Dortmund averages a daily high of 15.3°C with nights around 7.2°C. Expect roughly 14.5 wet days totalling 69.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Dortmund is May–September.
Based on BOCHUM, GM (14.1km), 1995–2024. 13 years of October data.