March in Belfast averages a daily high of 10.4°C with nights around 3.4°C. Expect roughly 15.9 wet days totalling 73mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Belfast is June–September.
Based on STORMONT CASTLE, UK (6.3km), 1995–2024. 30 years of March data.