Question

Give reasons as to why the Tamil Nadu coast receives winter rainfall.

Answer 1

Hint: The vast majority of Tamil Nadu tends to fall underneath the tropical savanna climate under the Köppen climate classification and a smaller fraction of the state tends to fall underneath the humid subtropical climate; the climatic conditions of the state varies from dry sub-humid to semi-arid.

Complete answer:
The Tamil Nadu summer passes throughout March, April, and May and is marked throughout the state by extreme temperatures and limited rainfall. The winter weather begins early in December and finishes in mid-March. The climate is enjoyable when the temperature gets cold. The days are sunny and beautiful, but it isn't too hot. The temperature drops as soon as the sun goes down and the day's heat fades away to a cooler temperature.
During the monsoons, Tamil Nadu gets rain due to the extreme southwest trade winds blowing to the northern hemisphere. Due to the northeast air currents, Tamil Nadu receives rainfall in the winter season.
Since the state completely relies on rain to regenerate its water supplies, monsoon deficiencies result in acute precipitation. 7 agro-climatic zones is been identified in Tamil Nadu: north-west, west, south, high rainfall, high altitude hills, north-east, and the Cauvery Delta (the most fertile agricultural zone).

Note:
The state has three distinct rainfall periods: early rainfall; rainfall from tropical cyclones during the Withdrawal of Monsoons (October-November) arising in the vicinity of the Andaman Islands; and the North-East monsoon during the periods of October-December, with predominant northeast monsoon winds arising from the western disturbances over the Bay of Bengal. From February to early June, the dry monsoon takes place.