March in Dandong averages a daily high of 8.8°C with nights around -1.3°C. Expect roughly 6 wet days totalling 22.7mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Dandong is September–October.
Based on SINUIJU, KN (3.4km), 1995–2024. 22 years of March data.