The term 'Monsoon' is generally referred to the rainy season in various parts of the world including Asia, Africa, Australia and North America. The word monsoon comes from the Arabic language and was used by British in India during the colonial era.
There are different names given to the monsoon in various areas of the world like North American Monsoon in the US, Southwest Monsoon in India, East Asian Monsoon in Indo-China, Philippines, China, Korea and Japan, Indo-Australian Monsoon in Australia and European Monsoon in Europe. In all kinds of monsoons, the high pressure created on the land that invites rain-laden winds from the water sources causes the rains. In some areas monsoons have a milder effect while in some parts of the world especially in Asia, they become a menace with floods and inundations throughout the region.
Although, there have been predictions about rainfall-their time and amount- but the forecasts have never been accurate. While irrigation has benefited a lot due to the rains, the world still has a lot to do in the field of rain-water harvesting.