Why do most parts of India receive rainfall from June to September? 

The correct answer is Due to the South-West monsoon.

Key Points

• The South-west monsoon is the primary rainy season in India, which starts in June and lasts till September.
  • This monsoon is caused by the differential heating of land and sea, which results in the formation of low-pressure systems over the Indian Ocean and the Arabian Sea.​​

Additional Information

• Western Disturbances are low-pressure systems that originate in the Mediterranean region and move towards the Indian subcontinent.
  • These disturbances bring rainfall to the north-western parts of India during the winter months, and they also affect the weather conditions in other parts of the country.
• The North-east is known as the winter monsoon, the northeast monsoon approaches India from the northeast.
  • During this time, rainfall is common throughout the southern region of India, particularly in Kerala, Andhra Pradesh, Karnataka, and Tamil Nadu.
• The Retreating Monsoon, also known as the North-East monsoon, brings rainfall to the southern parts of India during October and November.
  • This monsoon is caused by the withdrawal of the south-west monsoon winds and the formation of a low-pressure system over the Bay of Bengal.