IMD declared the southwest monsoon withdrawn from the entire country on October 15, the same day northeast monsoon rainfall began over the southern peninsula.

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• The India Meteorological Department declared on October 15, 2026 that the southwest monsoon had withdrawn from the entire country.
• Northeast monsoon rainfall activity commenced the same day over Tamil Nadu, Puducherry and Karaikal, Coastal Andhra Pradesh, Rayalaseema, South Interior Karnataka, and Kerala and Mahe.
• An upper air cyclonic circulation over south coastal Tamil Nadu was among the features associated with the onset.
• Easterly and northeasterly winds set in over southern peninsular India and the adjoining Bay of Bengal.
• IMD forecast a wet spell with isolated heavy falls over many parts of the south peninsula until October 21.
• South peninsular India receives about 30 percent of its annual rainfall during the northeast monsoon season from October to December.
• Tamil Nadu, Puducherry and Karaikal receive about 48 percent of their annual rainfall in this season.
• IMD's forecast for October to December 2026 rainfall over the south peninsula is normal, at 88 to 112 percent of the Long Period Average.

Tags: NortheastMonsoon, MonsoonWithdrawal, IMD