Nanjing Climate

Nanjing has a north subtropical humid climate with distinct four seasons and abundant rainfall. Spring and autumn are short, while summer and winter are long, resulting in significant annual temperature fluctuations. In winter, northeasterly winds prevail year-round, with an average January temperature of 2.7°C and an extreme daily low of -14°C, which occurred on January 6, 1955. In summer, southeasterly winds prevail, with an average July temperature of 28.1°C and an extreme daily high of 43°C, which occurred on July 13, 1934. The average annual rainfall is 117 days with an average rainfall of 1,106.5 mm, a relative humidity of 76%, and a frost-free period of 237 days. The plum rain season runs from late June to early July. The average annual temperature is 15.4°C, with extreme temperatures reaching a high of 39.7°C and a low of -13.1°C. There are 113.7 days with precipitation greater than 0.1 mm, with the highest annual precipitation of 160 days occurring in 1957. The average annual precipitation is 1,090.4 mm, with the highest annual precipitation of 1,825.8 mm occurring in 1991. Spring in Nanjing begins around April 1st, summer around June 8th, autumn around September 18th, and winter around November 12th. Nanjing has short springs and autumns, and long summers and winters, with significant temperature differences between winter and summer. Due to changes in atmospheric circulation and Nanjing's ongoing afforestation efforts, Nanjing's summer heat is significantly less intense than in other cities, leading to its removal from the nickname "furnace."