Climate in Guangzhou (plus 20)

Just bring some thicker clothes and other summer clothes.

Guangzhou is located in the low latitude, near the South China Sea, and belongs to the south subtropical maritime monsoon climate zone, with alternating winter and summer monsoon in a year, rich in light energy, less cold and warm, and abundant rainfall.

Rich light energy. Because Guangzhou is located in the low latitude, the Tropic of Cancer runs northward in the middle, and the solar altitude angle is large, which makes the total solar radiation higher and the sunshine hours more abundant. The annual total solar radiation is between 4,400 and 5,000 MJ/m2, and the annual sunshine hours are between 1.770 ~ 1.940 hours. The regional distribution is decreasing from southeast to northwest. In terms of time allocation, summer is the most and spring is the least. These light energy resources can meet the needs of high-yield, high-quality and efficient agricultural production. At present, the utilization rate of light energy in developed agricultural countries in the world has reached 5%. In recent years, studies at home and abroad show that the maximum utilization rate of light energy can reach 6%, while at present, it only reaches 1% ~ 2% in Guangzhou, which shows that Guangzhou has great potential for photosynthetic production.

Warm heat and little cold, long summer and short winter. Guangzhou is located in the south subtropical zone, and the temperature is relatively high all year round. The annual average temperature is 265,438+0.4 ~ 265,438+0.9℃, and the geographical distribution is low in the north and high in the south. The annual variation of temperature is single peak, with the highest in July and August and the lowest in 65438+ 10. July-August is the midsummer season, and the sun passes near the zenith of Guangzhou, with the strongest illumination and extremely hot atmosphere. The monthly average temperature is as high as 28.4-28.7℃, and the monthly extreme maximum temperature is 38.7℃ (Guangzhou,1953 August 12). In June+10/October, 5438, the sun's altitude angle was low and the sunshine time was short, which was controlled by the dry and cold air mass from the high-latitude mainland. The monthly average temperature was 13. 1℃, and the monthly extreme minimum temperature reached-2.6℃ (Conghua1963+in June)

Due to the vast territory of China, the temperature varies greatly from place to place, and the length of the four seasons is also different. According to its southern location and abundant heat resources, Guangdong Province usually takes February-March as spring, April-September as summer, 10- 1 1 as autumn and 12 as winter. The four seasons in Guangzhou are also divided by this standard. It can be seen that the summer in Guangzhou is as long as half a year, and the winter is only two months. The average daily temperature is above 10℃, showing the characteristics of warm heat and little cold, long summer and short winter.

There is abundant rainfall and the rainy season is obvious. From the macro environment, Guangzhou is adjacent to the Asian continent in the north and the Southern Ocean in the south. Winter is affected by the dry and cold northerly monsoon from the northern mainland, and the rest of the time is affected by the warm and humid monsoon from the southern ocean. There is abundant rainfall for most of the year, and the annual precipitation is between1612 ~1909mm. The regional distribution of precipitation is obviously controlled by topographic strike. Because the topography of the whole city gradually increases from south to north, showing a big slope inclined to the southern ocean, the warm and humid ocean airflow gradually rises in the process of going north, and the precipitation also increases, resulting in the distribution law of more precipitation in the north and less precipitation in the south. The annual precipitation in Panyu at the southernmost tip is only 16 12mm, and Conghua at the northernmost tip is1908.5mm. Guangzhou is in the middle, with1696.5mm. ..

Due to the seasonal alternation of winter and summer winds, the annual precipitation in Guangzhou changes greatly, and the annual rainfall hydrograph shows a single peak distribution. The rainy season is from May to June, and the rainy season is from June 165438+ 10 to June 65438+ 10. April-September is the rainy season, and the half-year precipitation generally accounts for more than 80% of the annual precipitation. April to June is the first flood season, which is the front rainstorm season, and the precipitation accounts for 40% ~ 50% of the whole year; July to September is the late flood season, which is a tropical cyclone rainstorm season, and the precipitation accounts for 30% ~ 40% of the whole year. 10 to March of the following year is the rainy season, and the half-year precipitation accounts for less than 20% of the whole year. Among them, 10 to 1 10 is mainly affected by the subtropical high, with crisp autumn and clear weather. 12 to March of the following year, mainly controlled by dry and cold air masses in the mainland, with dry atmosphere.

As can be seen from the above, when there is much water in Guangzhou, it is the season with sufficient light energy and heat. This good combination of water and heat is very conducive to the full use and play of water and heat resources, which is an important advantage of Guangzhou's climate.

Due to the instability of monsoon intensity and the alternating time of winter and summer every year, the climate in Guangzhou is unfavorable, and some disastrous weather often occurs, mainly including typhoon, rainstorm, dragon boat water, drought, cold wave, frost, cold dew wind and low temperature and rainy weather in spring.