What's the climate like in Guangxi?

Guangxi Zhuang Autonomous Region is located at a low latitude, with the Tropic of Cancer running through the middle, bordering tropical oceans in the south, Nanling Mountains in the north and Yunnan-Guizhou Plateau in the west. According to the national topographic classification, Guangxi belongs to the transition zone from Yunnan-Guizhou Plateau to the southeast coastal hills, with the topographic characteristics of high-week, medium-low, basin-shaped, mountainous and few plains. Under the combined action of solar radiation, atmospheric circulation and geographical environment, it has formed the climatic characteristics of abundant heat, rain and heat in the same season, abundant precipitation, clear wet and dry, moderate sunshine, less winter and more summer, frequent disasters and prominent droughts and floods.

First of all, the climate is warm and rich in heat.

Guangxi Zhuang Autonomous Region is located in the south-central subtropical monsoon climate zone, with warm climate and sufficient heat. The annual average temperature is between16.5 and 23.1℃. Isotherms are basically distributed along the latitude direction, and the temperature decreases from south to north, from valley plain to hilly and mountainous area. The annual average temperature in the whole region is about 65% above 20.0℃, in which the Youjiang Valley, Zuojiang Valley and coastal areas are above 22.0℃, and Weizhou Island is as high as 23. 1℃. The average annual temperature in northeast Guilin and leye county, Nandan and Jinxiu, which are at higher altitudes, is lower than 18.0℃, of which leye county and Ziyuan are only 16.5℃.

The extreme maximum temperature in Guangxi Zhuang Autonomous Region is 33.7 ~ 42.5℃. Among them, the coastal areas, southern mountainous areas of Baise City, Jinxiu, Nandan, Fengshan, leye county and Tiandeng are between 33.7 and 37.8℃, while the rest areas are between 38.0 and 42.5℃, and Baise is the highest in the whole region.

The extreme minimum temperature in Guangxi Zhuang Autonomous Region is -8.4 ~ 2.9℃. The temperature in northern Guangxi is -8.4 ~-4.0℃, and the resources are the lowest in the whole region. The extreme minimum temperatures in Beihai, southern Fangchenggang, Bobai and Duan are above 0℃, and the rest are between -3.9 ~-0.2℃.

Second, there is abundant precipitation, and there is a clear distinction between dry and wet.

Guangxi Zhuang Autonomous Region is one of the most abundant precipitation provinces in China, with annual precipitation of1080 ~ 2760mm, and most areas are between1300 ~ 2000mm ... Its geographical distribution is more in the east and less in the west. There are many hills and mountains and few valleys and plains; In summer, there are many windward slopes and few leeward slopes. There are three rainy areas in Guangxi: (1) Dongxing to Qinzhou on the south side of Shiwan Mountain, with annual precipitation of 2100 ~ 2760 mm; (2) The annual precipitation in Jinxiu and Mengshan areas with Zhaoping as the center in the east of Dayao Mountain is1700 ~ 2000 mm; (3) The annual precipitation in Xing 'an, Lingchuan, Guilin, Lingui and Rong 'an with Yuechengling to Yongfu as the center reaches 1800 ~ 2000mm. There are also three areas with low rainfall: (1) Youjiang valley with Tian Yang as the center and its upper reaches, such as Tianlin, Longlin and Xilin, with an annual rainfall of only1080 ~1200mm; (2) The annual precipitation from Mingjiang River Basin and Zuojiang River Basin to Yongning, with Ningming as the center, is1200 ~1300mm; (3) The annual precipitation in Qianjiang River Basin centered on Wuxuan is 1200 ~ 1300mm.

Due to the alternation of winter and summer monsoon, the seasonal distribution of precipitation in Guangxi is uneven, and the dry and wet seasons are distinct. April to September is the rainy season, and the total precipitation accounts for 70% ~ 85% of the annual precipitation. The heavy precipitation weather process is frequent, which is prone to floods. 10 ~ March is the dry season, and the total precipitation only accounts for 15% ~ 30% of the annual precipitation. Drought and lack of rain easily lead to forest fires.

Third, the sunshine is moderate, with less winter and more summer.

The annual sunshine hours in all parts of Guangxi Zhuang Autonomous Region are 1 169 ~ 22 19 hours, which is more than that in neighboring provinces, less than that in most parts of Yunnan and equivalent to that in Guangdong. Its geographical distribution features are: more in the south and less in the north; There are many valleys and plains, but few hills and mountains. The time spent in Beihai, Tianyang and Shangsi is over 1.8 hours, and Weizhou Island is the most, reaching 22 1.9 hours throughout the year. Hechi, Guilin and Liuzhou, and Jinxiu, leye county, Lingyun, Napo and Mashan are short of 1.500 hours, and Jinxiu has the least sunshine hours in the whole year, only 1.654 38+0.69 hours. The rest of the area is between 1500 and 1800 hours.

The seasonal variation of sunshine hours in Guangxi Zhuang Autonomous Region is characterized by the most in summer and the least in winter. Except for the northern mountainous area of Baise, the spring is more than the autumn, and the rest areas are more than the spring. The sunshine hours in summer are 355 ~ 698 hours, accounting for 365,438+0% ~ 32% of the annual sunshine hours. The sunshine hours in winter are only 186 ~ 380 hours, accounting for only 14% ~ 17% of the annual sunshine hours.