The average monthly temperature in the hottest summer in most areas is between 26.8℃, which is far less than that in tropical areas of Africa and Australia. Unlike Asia and North America, the annual temperature difference in all parts of South America is small. The whole continent is rich in precipitation, and the area with annual precipitation above 1000 mm accounts for more than 70% of the whole continent, which is the smaller desert area in all continents.
river system
The water system in South America is bounded by the Andes of the Cordillera Mountains, and it belongs to the Atlantic water system and the Pacific water system in the east and west. The source of the Pacific water system is short and fast, and many of them flow into the sea alone. Most of the rivers in the Atlantic system have a long history, many tributaries, abundant water and vast river basins.
Among them, Amazon River is the river with the widest basin area and the largest flow in the world, with more than 20 tributaries exceeding 1000 km. The main rivers in South America are Amazon, parana river, Paraguay, Negro and Uruguay. , the length is 6440 km, 4700 km, 2550 km, 2000 km and 1.500 km respectively.