India has a monsoon type of climate and the factors are:
* The differential heating and cooling of land and water creates low pressure on the landmass of India while the seas around experience comparatively high pressure.
* The shift of the position of Inter Tropical Convergence Zone (ITCZ) in summer, over the Ganga plain (this is the equatorial trough normally positioned about 5°N of the equator – also known as the monsoon- trough during the monsoon season).
* The presence of the high-pressure area, east of Madagascar, approximately at 20°S over the Indian Ocean. The intensity and position of this high-pressure area affects the Indian Monsoon.