Explain why does Chennai receive more rainfalls in winter than in summer.

Chennai is the capital city of the state of Tamil Nadu. It lies on the Coromandel coast on the eastern coastal plain. This region generally receives rainfall in winters and also in summers. However, quantum of winter rainfall is always recorded larger than it is in summer. This part of the land lies at rain shadow of Western Ghats therefore, does not receive much rainfall during south-west monsoon season i.e. in summer.

The south-west monsoon is replaced by the north-east trade winds and they pick-up moisture while crossing the Bay of Bengal. These retreating monsoon winds therefore, become rain fetching winds, especially for Chennai in Coromandel coast.