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Why are South West monsoons less rainy in Chennai?

Last Updated : 06 Jun, 2023
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Chennai is situated on the leeward side of the Western Ghats and is far from western coast. The Arabian branch causes greater rainfall on the western coast, while the eastern branch passes through the Bay of Bengal, in the north-eastern part of the country. Because of this, Chennai receives lower rainfall from southwest monsoons.

A storm is an occasional shift in the course of the predominant, or most grounded, winds of a district. Rainstorms cause wet and dry seasons all through a large part of the jungles. Rainstorms are most frequently connected with the Indian Ocean. 

The Southwest Monsoon is the blustery season that endures from June to September. The Southwest Monsoon is the Indian subcontinent’s essential blustery season. The southwest storm holds over the country throughout the mid-year rainstorm season. During this time, the nation gets almost 75% of its yearly precipitation. Southwest rainstorm sets in over the super southwestern tip of the promontory toward the finish of May. The beginning of the Monsoon is portrayed by an unexpected spray of precipitation action. It advances inland in stages and covers the whole country by the center of July. It begins recovering from the northwest by the start of September, dynamically retreating southwards. Tamil Nadu is considered a downpour shadow district as it lies on the eastern (leeward side) side of the western ghats. The all-out yearly precipitation is greatest over the southernmost piece of the state.

Southwest monsoons are Less Rainy in Chennai

During the South-West Monsoon, Tamil Nadu stays dry since it is situated in a downpour shadow region. Tamil Nadu has come down during the storm season because of the southwest exchange winds which blow towards the northern half of the globe. 

Chennai gets downpours from upper east storms during October-November which isn’t a major area of strength for extremely gives less downpours though Thiruvananthapuram Kerala gets exceptionally weighty downpours from southwest rainstorms which are considerably more impressive. It likewise gets some downpour from the withdrawing Monsoon. 

Important Points To Remember

  • Chennai is situated on the Coromandel coast. It lies in the downpour shadow area of the Arabian Sea part of S.W. storms. It first strikes the
    western waterfront locale and is nearly depleted when it comes to Chennai.
  • The Bay of Bengal branch runs almost lined up with the Coromandel coast. Thus, it likewise neglects to give downpours to Chennai.
  • Besides, seaward dry breezes blow over this locale in the summers.

Related Links

  1. Monsoon in India
  2. Southwest monsoon and Northeast monsoon
  3. Characteristics and Effects of Monsoons in India
  4. Distinguish Burst of Monsoon and Break of Monsoon

FAQs on Southwest monsoons are Less Rainy in Chennai

Q 1. Are Southwest monsoons less rainy in Chennai?


Yes, the Southwest monsoon is less rainy in Chennai as the Arabian Sea branch hits Western Ghat and causes heavy rainfall, but as it approaches Chennai, it becomes offshore and results in less rainfall.

Q 2. Why does Tamil Nadu remain dry during the southwest monsoon?


Tamil Nadu remains dry during the Southwest Monsoon season as it is situated parallel to the Bay of Bengal branch of the southwest monsoon and situated in the rainshadow zone of the Arabian Sea branch of the southwest monsoon.

Q 3. Which place receives the lowest rainfall from the southwest monsoon?


The place which receives the lowest rainfall from southwest monsoon is Chennai.

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