March in Ulm averages a daily high of 8.1°C with nights around -1.2°C. Expect roughly 13.8 wet days totalling 70.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ulm is June–September.
Based on MERKLINGEN, GM (21km), 1995–2024. 30 years of March data.