Climatic types and characteristics in Guangxi

Guangxi has various climate types, with long summer and short winter, and the average annual temperature is between 16℃-23℃. Measured by the average temperature, the summer in the north is as long as 4 months to 5 months, and the winter is only about 2 months. May to the south 10 is summer and winter is less than two months. There is almost no winter in coastal areas.

As far as climate zoning is concerned, the northern part of Guangxi belongs to the tropical climate of Central Asia and the southern part belongs to the tropical climate of South Asia. Topographically, northern and western Guangxi have the general characteristics of mountain climate, with obvious "three-dimensional climate" and diversified microclimate ecological environment; However, southern Guangxi has a warm and humid maritime climate.

The annual rainfall in Guangxi ranges from 1 0,000 mm to 2,800 mm, especially in Dongxing District of Fangchenggang City, reaching 2,822.7 mm, with the lowest rainfall in Tianyang County, about 1 0,654,38+000 mm. The total solar radiation in the whole year is 90 kcal-1000 kcal. The daily average temperature is ≥ 10℃, the accumulated temperature is between 5000℃ and 8300℃, and the duration is 240 days to 358 days. The distribution of precipitation and heat resources generally increases from north to south. The rainfall from April to September accounts for 75% of the annual rainfall, and the rainy season coincides with the hot season. Rain and heat in the same season are more conducive to agricultural production.

The abnormal advance and retreat of monsoon in Guangxi often leads to great changes in rainfall and temperature, and severe weather such as drought and flood, "two chills" (cold in late spring and cold dew wind), typhoon and hail frequently occur. There is a spring drought in western Guangxi with a frequency of 60%-90%, and an autumn drought in eastern Guangxi with a frequency of 50%-70%. The rainy season is heavy and the rainstorm is too concentrated, and floods occur every year, especially in the coastal areas of southern Guangxi and Rongjiang River basin. However, in the spring and autumn rainy season, influenced by the strong cold air from the north to the south, there are cold dew in spring and autumn almost every year, which harms agricultural production. Windy weather occurs from April to July every year, with a large scope and degree of influence. In addition, the perennial hail in western Guangxi is not conducive to the winter production of crops and fruit trees.