March in Sundsvall averages a daily high of 3.1°C with nights around -6.6°C. Expect roughly 9.3 wet days totalling 37.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Sundsvall is June–August.
Based on SIDSJO, SW (1.5km), 1995–2024. 13 years of March data.