Tropical regions have a lot of rain when the sun vaporizes a large volume of water from the warm ocean regions. When the wind carrying moisture from the Indian Ocean collided with the wind from the south slope of Himalayas Pegungungan and pushed up, wind it will shed all of its cargo in the form of heavy rain. Plato Meghalaya is a land of rainfall. In addition, because these areas of high tropical sun seemed to accept that the maximum in the daytime, rain clouds are formed and floated around Plato until the air becomes cold at night. That is why most hujab down at night.