The southwest monsoon is retreating across central and eastern India while rainfall activity builds over the southern peninsula.

BulletsIn

• On October 8, 2026, the India Meteorological Department said the southwest monsoon had withdrawn from remaining parts of Maharashtra and some parts of Goa, Karnataka, Telangana and Odisha.
• The same bulletin reported withdrawal from some more parts of Jharkhand and Chhattisgarh.
• The line of withdrawal now passes through 27.5°N and 86.5°E, with Supaul and Ranchi among the places on the line.
• By its October 3 bulletin, the IMD had already declared the monsoon withdrawn from the remaining parts of North India.
• On October 9, the IMD said conditions were becoming favourable for withdrawal from some more areas.
• The normal pattern has the monsoon starting to retreat from northwest India around September 17 and withdrawing entirely by October 15.
• As easterly and northeasterly winds set in over the southern peninsula, the northeast monsoon begins, usually around mid-October, and runs until mid-December.
• The northeast monsoon supplies about half or more of the annual rainfall in Tamil Nadu and coastal Andhra Pradesh.
• IMD's October 7 bulletin recorded very heavy rainfall of 12 to 20 cm over Tamil Nadu, with heavy rainfall also over Himachal Pradesh, Jharkhand, Bihar and Kerala.
• It forecast isolated heavy rainfall over Kerala and Mahe and over Tamil Nadu, Puducherry and Karaikal during October 8 to 10.
• An upper-air cyclonic circulation over the Gulf of Mannar and adjoining south coastal Tamil Nadu was among the systems cited in early October bulletins.

Tags: SouthwestMonsoon, NortheastMonsoon, IMD