Chengdu enjoys a humid, subtropical monsoon climate. Firstly, the climate differs in the eastern and western parts, and the east is warm and the west is cool. Secondly, it is warm in winter, and spring comes early, with the frost-free period exceeding 337 days each year. The average annual temperature is around 16.5 degrees centigrade, which is 2-3 degrees centigrade higher than in the middle and lower reaches of the Yangtze River, and spring comes one month earlier, each year, there are only a few days when the temperature drops to below zero degrees centigrade. Thirdly, it enjoys plenty of rainfall in summer and autumn although it rains little in winter and spring, with an average annual rainfall of 1124.6mm. The rain fall of a record high year could be 2 times of that of a record low year. Fourthly, it provides enough sunlight, warmth and rainfall in the same seasons, which is beneficial for the growth of plants. Fifthly, the wind speed is low, the average annual wind speed is 1-1.5 meters per second, and the annual sunshine averages 1,042-1,412 hours, covering 83.0-94.0km per square centimeter.
Table of average monthly temperatures (unit: degrees centigrade)
January |
6 |
July |
26 |
February |
7.6 |
August |
26 |
March |
13 |
September |
22 |
April |
18 |
October |
16 |
May |
21 |
November |
12 |
June |
24 |
December |
7 |