What's the climate like in Foshan, Guangdong?

Foshan is a subtropical monsoon humid climate zone with mild climate and abundant rainfall. The annual average temperature is 22.5℃, 65438+ 10, the coldest in October, with an average of 13.9℃, and the hottest in July, with an average of 29.2℃. The annual rainfall is1681.2mm (Sanshui1688.7mm, Nanhai1677.4mm, Shunde1677.6mm), and the hilly areas in the west and north are slightly more rugged, with an average annual rainy day/kloc-. The rainy season is concentrated from April to September, during which the rainfall accounts for about 80% of the total annual rainfall. Summer rainfall is uneven, drought and flood are uncertain, and autumn and winter rainfall is obviously reduced. Sunshine hours reach 1629. 1 hour, and the growth period of crops is long.

Because of its low latitude, the influence of ocean and land weather systems on Foshan is obvious. The alternation of winter and summer monsoon is a remarkable feature of Foshan monsoon climate: there are more northerly winds in winter and spring and more southerly winds in summer. The northerly wind in winter is formed by the southward extension of the polar continental air mass, which is dry and cold; Due to the northward expansion of tropical ocean air mass, the southerly wind in summer is warm and humid.

spring

The temperature and precipitation in Foshan are rising in spring, which is a season of alternating cold and warm, so it is very unstable. Over the years, spring in Foshan is often rainy and rainy, with a chill, and "spring rain is wet with cotton". The rain this season is mixed. Although it can nourish everything and filter the air, it also drowns the traces of sunshine, so spring is the season with the least sunshine. Due to the lack of sunshine, the daily variation of temperature is small, which always makes people feel chilly. Of course, in some years, there will be beautiful spring, and in some years, there may be persistent drought because the rainy season comes late. Usually the rainy season begins in April, and our city enters the pre-flood season.

summer

Due to the influence of ocean air mass, the south wind blows in Foshan in summer, and rich water vapor is continuously transported to the sky with the south wind, which provides favorable conditions for summer rainfall. May and June are the peak rainfall periods in the first flood season in Foshan, and there are many opportunities for heavy rain in various places. At the same time, June ~ 10 is the main period when tropical cyclones affect Guangdong.

According to statistics, on average, 5-6 tropical cyclones affect Guangdong every year, and 3-4 tropical cyclones land in Guangdong, accounting for 40% of the tropical cyclones landing in China. Therefore, summer is the season of thunderstorms and tropical cyclones, and 50%~60% of the rain falls at this time of the year. Uncontrolled rain, accompanied by tyrannical winds, often leads to serious disasters. However, summer rain is often eagerly awaited by people. Summer in Foshan is very long and the weather is very hot. The hottest month in a year is July, and the average monthly temperature in the city reaches 29.2℃.

The extreme maximum temperature is 39.2℃ (Nanhai District, July 2005 18). The high temperature in midsummer, coupled with the high relative humidity, makes the summer heat more pressing. Therefore, when people are looking forward to it, the rain that comes quietly, with a cool breeze, takes away the summer heat and moistens people's hearts, which is undoubtedly the best gift given by God.

autumn

Say goodbye to the hot summer and step into the cool autumn. The sky is high and the clouds are light, and the wind is long. Autumn is the most comfortable season of the year. At this time, the cold air began to go south frequently, the temperature gradually dropped, and the autumn wind washed away the depression in the chest, which made people feel refreshed. Autumn is not an active season for tropical cyclones, but it is still possible. Only once every 10 years will a tropical cyclone land in Guangdong, and the ensuing storm is inevitable. Generally speaking, autumn is mainly sunny with little precipitation. According to statistics, from the end of September to the end of June, the average precipitation was only 155. 1 mm, accounting for about one tenth of the annual rainfall. There are many years in history when it has not rained for 30 consecutive days, and the characteristics of autumn dryness are very obvious.

winter

The northeast wind and the north wind prevail in Foshan in winter, and the dry and cold air mass from the north travels long distances from the source, and its power is greatly weakened; At the same time, with the gradual increase of the surface temperature, the original cold and dry nature of the air mass gradually changed into a colder and wetter nature, and the air pressure difference also decreased when it arrived in Guangdong, so the wind speed gradually decreased from north to south.

When we are in the arms of winter, what comes with the wind is not all cold, nor all depression and sadness. However, there are some exceptions. When the cold wave comes, there may be frost weather. Winter is the dry season in Foshan, with less precipitation, sunny weather and plenty of sunshine. 65438+ 10 is the most Leng Yue, the monthly average temperature 13.9℃, and the extreme minimum temperature reaches-1.9℃, appearing in 1967+ 17.