A summary of Chongqing weather is early spring, hot summer, cool autumn and warm winter, with long frost-free period and abundant rainfall.  In summer, the temperature can reach up to 40 C (104 F), so Chongqing together with Nanjing and Wuhan are known as the ‘three furnace cities’ in China. Spring and winter are recommended as the optimum time to tour Chongqing.

Every year when spring is being replaced by summer there is too much night rain, and thus the city is famous for its "night rain in the Ba Mountains". On average, Chongqing has about 100 fogy days annually, so it is also famous as 'capital of fog'.

Introduction to Chongqing Climate
Situated in the humid sub-tropical monsoon climate belt, Chongqing weather is mild, with an annual average temperature of 18 C (64 F). Chongqing receives abundant rainfall, averaging about 1,000 to 1,400 millimeters (39 to 55 inches) annually. However, it has the lowest annual sunshine in China because of fog and mist apparently.

Chongqing’s spring comes early at the end of February or early March and lasts to early May. The temperature rises quickly, but not stable. There are frequent cold spells and big winds. Thus, a thin overcoat should be prepared for a trip to Chongqing in early spring. It’s a good time to enjoy the flowers - the golden rape flowers and peony in Dianjiang County, peach blossom in Zouma Town and azaleas in Golden Buddha Mountain (Jinfo Mountain).

Summer in Chongqing is relatively long from middle May to the end of September, lasting for 120 - 140 days. It is incredibly hot and muggy, with an average temperature around 26 C (79 F). However, multiple summer resorts make you an enjoyable trip in Chongqing, including the Yangtze River Cruise, Wushan Three Little Gorges, Wansheng Heishan Valley, Furong Cave, Snow Jade Cave and Yutai Mountain. Bring light clothing such as T-shirts, shorts and sandals if you come in summer. Also, remember to bring your umbrella, sunglasses, and suntan lotion to avoid the heat of the 'burning furnace'.

From October to late November is the autumn of Chongqing. It is mostly cloudy and rainy, and the temperature drops gradually. Light jacket and long-sleeved T-shirt are needed at this time. There is a period of time called ‘Indian Summer’ from late October to middle November when is a golden time to feast your eyes on the red leaves in Garden Expo Park.

Chongqing has a low temperature of 4 C (39 F) in winter, about 1-5 C (34 - 41 F) warmer than Wuhan and Nanjing at roughly the same latitude. There is little frost or snow, but with much fog and mist. A short-sleeved T-shirt and a warm jacket are enough for the winter. Northern Hot Springs Park and Southern Hot Spring Park are of course ideal choice at this time.