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What's the climate like in Chengdu?
Chengdu belongs to subtropical humid monsoon climate zone, with mild climate, four distinct seasons, long frost-free period, abundant rainfall and little sunshine. The annual average temperature for many years is 16.2 degrees, the annual extreme maximum temperature is 37.3 degrees, the annual extreme minimum temperature is -5.9 degrees, the hottest month appears in July and August, the monthly average temperature is 25.4 and 25.0 degrees, and the most Leng Yue appears in 65,438+10 month, with the monthly average temperature of 5.6 degrees. The annual total precipitation is 9 18.2mm, and the rainfall is mainly concentrated in July and August, with monthly rainfall of 225 and 229 mm respectively. The months with the least rainfall are 12 and 1, and the monthly rainfall is about 6 mm respectively. The rainstorm period generally occurs from May to September, and the perennial rainstorm occurs at the end of June, early July and late August respectively. The duration of perennial rainstorm is from the end of May to the beginning of June and around mid-September. 1960-200 1 year, the total number of regional floods in the city is 44, and the number of regional floods in the whole year is 1 time. The total sunshine hours in the whole year are 1 148.9 hours. The most frequent wind direction is still wind with a frequency of 39%, and the second most frequent wind direction is north wind with a frequency of 14%. The start and end dates of smooth passing 10 degrees are from mid-March to early March, and the start and end dates of smooth passing 20 degrees are in late May, the earliest in Jintang, and the latest in Dujiangyan, in early June. Fog days are more than two months throughout the year, with high incidence in autumn and winter.11-65438+February has as many as one day. The frequency of severe spring drought is 32% in a year and 27% in a general year. The frequency in summer drought years is 63%, 39% and 24%. Thunderstorm days are 34 days, the first day is April 13, and all times are September 27th. The number of hail days is 0. 1 day. Main climatic characteristics of each season: Winter: There is no severe cold in winter, which is beneficial to the growth of Koharu and animal husbandry. The continuous foggy weather has a great influence on traffic and shipping, especially in winter when it is dry and less sunshine. Spring: The temperature rises earlier, which is beneficial to the growth of trees and spring crops. However, the sudden rise and fall is unstable, and it is prone to persistent low temperature or "late spring cold", which affects the timely sowing of crops in Da Chun or causes rotten seeds and seedlings. Early summer: Moderate temperature and large diurnal range are conducive to the mature harvest of early spring crops, but frequent droughts in summer easily lead to water shortage for planting in Da Chun in hilly and tailrace areas. In early summer, disastrous weather such as hail and strong wind often occurs. Sometimes, long-term low temperature and continuous rainfall will adversely affect the harvest in Koharu, planting in Da Chun and rice tillering. Midsummer: The hot, rainy and sunny summer is the golden season for crop growth in Da Chun. However, frequent heavy precipitation weather is easy to cause waterlogging. At the same time, high temperature and high humidity are conducive to the occurrence and development of various pests and diseases. Autumn: there is a short period of cool and rainy weather in autumn, and a long period of crisp weather in autumn.
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