(i) The Indian Ocean and the Himalayan ranges exert a great influence on the climate of India and the origin of monsoons.
(ii) Because of high temperatures in summers, a low pressure area develops in the Punjab Plains and the Thar Desert of Rajasthan.
(iii) At the same time a high pressure region develops over the Indian Ocean.
(iv) This attracts winds and they start blowing from the Indian Ocean towards the mainland India.
(v) These are moisture-laden winds which bring rainfall to India.
(vi) These winds move towards the Himalayas and due to the natural obstruction of the Himalayas, orographic rain occurs.
(vii) Later these winds retreat from the Himalayas and move from the north-east towards the Indian Ocean and brings rain to some parts of the Peninsula..
(viii) Also the severe cold winds blowing from the north are obstructed by the Himalayas and it saves India from severe winters.