Nanjing has a humid climate in the north subtropical zone, with four distinct seasons and abundant rainfall. Annual average rainfall 1 17 days, average rainfall 1 106.5mm, relative humidity 76%, frost-free period 237 days. The rainy season is from late June to early July every year. The annual average temperature is 15.4℃, and the annual extreme temperature is the highest 39.7℃ and the lowest-13. 1℃.

Nanjing enters spring around April 1, summer around June 8, autumn around September 18 and winter around June1/2. Nanjing is short in spring and autumn, long in winter and long in summer, and the temperature difference between winter and summer is significant. Due to the change of atmospheric circulation and the continuous afforestation in Nanjing, the summer heat in Nanjing is much lower than that in other cities, so the name "stove" was removed.

Hydrological situation in Nanjing

The water area of Nanjing is more than 1 1%, including Qinhuai River, Jinchuan River, Xuanwu Lake, Mochou Lake, Baijia Lake, Shijiu Lake, Gucheng Lake and Jinniu Lake. The Yangtze River runs through the city, with a total coastline of nearly 200 kilometers, and there are 120 rivers in the territory. Rivers and lakes belong to the Yangtze River system, and only the rivers that flow into gaoyou lake and baoying lake in the north of Liuhe District belong to the Huaihe River system.

The Yangtze River system includes the Qinhuai River system in the south of the Yangtze River, the Chuhe River system in the north of the Yangtze River, the river system along the Yangtze River, the two lakes system consisting of Shijiu Lake and Gucheng Lake, and the west taihu lake River system in the east of Gaochun. There are abundant groundwater resources and excellent water quality, especially Tangshan Hot Springs, Tangquan Hot Springs and Pearl Springs.

Reference to the above content: Baidu Encyclopedia-Nanjing