Tamil Nadu experiences distinct weather pattern during El Niño years

While El Niño typically brings deficient rainfall and droughts to most of India, coastal Tamil Nadu often experiences a contrasting pattern.

Pressure differences between the Bay of Bengal and the Arabian Sea drive moist air into coastal Tamil Nadu during strong El Niño years.

Warmer waters in the Bay of Bengal combined with El Niño increase evaporation, resulting in intense localised rainfall from cyclonic circulations in November and December.