March in Tallinn averages a daily high of 3.1°C with nights around -3.7°C. Expect roughly 12.1 wet days totalling 33.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Tallinn is June–August.
Based on TALLINN, EN (9.6km), 1995–2024. 30 years of March data.