March in Derry averages a daily high of 9.5°C with nights around 4.5°C. Expect roughly 19.2 wet days totalling 77.6mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Derry is June–September.
Based on MALIN HEAD, EI (41.6km), 1995–2024. 29 years of March data.