October in Ulm averages a daily high of 13.1°C with nights around 4.3°C. Expect roughly 12.9 wet days totalling 67.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ulm is June–September.
Based on MERKLINGEN, GM (21km), 1995–2024. 30 years of October data.