Heavy Rain Likely in Chennai, Tamil Nadu Till October 24: IMD
Image: PlaneMad / Wikimedia Commons
Heavy rain is likely at isolated places across Tamil Nadu and Puducherry every day until October 24 as the northeast monsoon strengthens, the India Meteorological Department (IMD) said in its seven-day forecast issued from Chennai at 1 pm on Saturday. Chennai and its neighbouring districts are on the list for both Sunday and Monday. The IMD said the northeast monsoon set in on October 15, the day the southwest monsoon withdrew from the whole country.
District-Wise Forecast for Tamil Nadu
Sunday (October 18): Heavy rain is likely at isolated places over Chennai, Tiruvallur, Chengalpattu, Kancheepuram, Villuppuram, Kallakurichi, Cuddalore, Tiruvannamalai, Salem, Dharmapuri, Krishnagiri, Erode, Nilgiris, Coimbatore, Ariyalur, Perambalur, Tiruchirappalli and Puducherry. On Saturday, the IMD had warned of heavy to very heavy rain in Chengalpattu district.
Monday (October 19): Heavy rain is likely over Chennai, Chengalpattu, Tiruvallur, Kancheepuram, Villuppuram, Cuddalore, the delta districts (Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Pudukkottai and Karaikal), Ramanathapuram, Sivaganga, Thoothukudi, Tirunelveli, Nilgiris, Coimbatore and Puducherry.
Tuesday (October 20): The focus shifts west and south. Heavy to very heavy rain is likely at isolated places over Nilgiris, Coimbatore, Tiruppur, Dindigul, Theni, Virudhunagar, Tenkasi, Tirunelveli and Kanyakumari, with heavy rain over Madurai, Tiruchirappalli, Salem and several other interior districts.
October 21 to 24: Heavy rain is likely to continue at isolated places over the Western Ghat and southern districts, including Nilgiris, Coimbatore, Theni, Dindigul, Madurai, Tenkasi, Tirunelveli and Kanyakumari. Thunderstorms with lightning are likely across the state through the week.
The IMD classes 6.45 to 11.55 cm of rain in a day as heavy and 11.56 to 20.44 cm as very heavy.
Kerala and Neighbouring States
Heavy rain is likely at isolated places in Kerala and Mahe every day until October 24, the bulletin said, after a warning of heavy to very heavy rain on Saturday. South interior Karnataka is also likely to see heavy rain at isolated places through the week, with thunderstorms and gusty winds of 30 to 40 kmph.
What Residents Should Do
Short, intense spells can flood low-lying roads and subways in Chennai and slow traffic in the delta and hill districts. Residents, fishers and travellers should check the latest district warnings on the IMD website, mausam.imd.gov.in, and follow local advisories. More short reads in IPB’s Quick Reads section, and the day’s news in Daily Updates.
Based on the India Meteorological Department, Chennai seven-day forecast issued at 1300 hrs IST on October 17, 2026, and reporting by The Week, Onmanorama and The Hans India.
Image: PlaneMad / Wikimedia Commons.
