The average annual temperature of the city is around 18 degrees Celsius, with the lowest winter temperature averaging between 6 degrees Celsius and 8 degrees Celsius and summer temperature averaging between 27 and 29 degrees Celsius. It has a total annual sunshine time of 1000 to 1200 hours. It has mild winter, hot summers, long frost-free periods and ample rain, warm and wet, with rain and heat occurring in the same season. It has an annual rainfall of 1000 to 1400 mm. It often rains at night in late spring and early summer, and thus the city is famous for its ''night rain in the Ba mountains''. The area under Chongqing's jurisdiction is 470 kilometers from east to west, and 450 kilometers from north to south.