Heavy rains likely in many districts of Tamil Nadu including Chennai on Oct. 18

Heavy northeast monsoon rain lashed several parts of Chennai through the night, leaving roads waterlogged and disrupting normal life.  | Photo Credit: Johan Sathyadas J.

Heavy rains are expected to occur on Sunday (October 18, 2026) too in districts including Chennai, Kancheepuram, Chengalpet, Salem, Krishnagiri, Tiruchi, Ariyalur, Nilgiris, Dharmapuri, Tiruvallur, Cuddalore, Tiruvannamalai, Erode and Puducherry, according to the Regional Meteorological Department.

According to the department, there exists significant convective cloud development over the north coastal Tamil Nadu and adjoining sea areas associated with the cyclonic circulation over the region and this is likely to bring heavy to very heavy rainfall to Chennai and its neighbourhood on 18 October as well.