The monsoons are important for South and Southeast Asia because they bring in a huge amount of rainfall.
The monsoons act in the western Pacific Ocean and in the Indian Ocean, thus influencing the land in these areas. There are two types of monsoons, one of them is dry, while one is wet. The wet monsoons often are in the spotlight, and with every right, as they bring in enormous amounts of rainfall.
South Asia and Southeast Asia are the most affected regions. When the wet monsoons are active, these two regions get unimaginable amounts of rainfall. The rainfall is high in some areas that they are among the ones that have the highest rate of precipitation in the world. The importance, of course, is the rainfall, as it manages to provide water for the majority of the year, the rivers and lakes gain a lot of water and their levels rise significantly, and this helps the people a lot, especially in agriculture.