January in Nanjing averages a daily high of 7.1°C with nights around -0.5°C. Expect roughly 8.7 wet days totalling 51.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Nanjing is April–May.
Based on NANJING, CH (18.4km), 1995–2024. 18 years of January data.