March in Trier averages a daily high of 10.9°C with nights around 2.2°C. Expect roughly 12.6 wet days totalling 53mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Trier is May–September.
Based on TRIER PETRISBERG, GM (1.6km), 1995–2024. 30 years of March data.