Question
Chennai has more rains only after the monsoon is over in most parts of the country.
Solution
The duration of monsoons in India is about 120 days. The monsoons withdraw from India by December completely. The retreating monsoons get the direction of N.E. Monsoons. The winds pick up moisture while crossing Bay of Bengal. The winds give winter rainfall in Tamil Nadu on S.E. Coastal plain. So, Chennai gets more rains in winter.
