Tamil Nadu Northeast Monsoon to Begin in 2–3 Days; Heavy Rain Forecast from October 15

The Northeast monsoon is likely to set in over the Southern Peninsula within the next two to three days, according to the Regional Meteorological Centre (RMC), Chennai. Several districts of Tamil Nadu are expected to receive rainfall accompanied by thunderstorms, lightning and gusty winds over the coming days.

The weather department has attributed the developing weather conditions to twin upper-air cyclonic circulations over the south Andaman Sea and the Gulf of Mannar and adjoining areas.

Tamil Nadu Rain Forecast for October 13

On Tuesday, October 13, light to moderate rain accompanied by thunderstorms, lightning and gusty winds of 40–50 kmph is likely at isolated places in the following districts:

Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Pudukkottai, Ramanathapuram, Thoothukudi, Tirunelveli and Kanniyakumari, along with Karaikal.

Rain Expected Across Tamil Nadu on October 14

On Wednesday, October 14, moderate rainfall accompanied by thunderstorms, lightning and gusty winds of 40–50 kmph is forecast at isolated places across several districts.

The forecast covers Chennai, Chengalpattu, Villupuram, Cuddalore, Mayiladuthurai, Tiruvarur, Nagapattinam, Thanjavur, Pudukkottai, Ramanathapuram, Sivaganga, Thoothukudi, Tirunelveli, Kanniyakumari, Tenkasi, Theni, Virudhunagar, Coimbatore, Tiruppur, Nilgiris, Erode, Salem, Karur, Tiruchy, Ariyalur, Perambalur, Dindigul and Madurai, as well as Puducherry and Karaikal.

Heavy Rain Alert from October 15 to 18

The RMC has forecast heavy rainfall in several parts of Tamil Nadu between October 15 and October 18.

October 15: Heavy rain is likely in the ghat areas of Tirunelveli and Coimbatore districts, along with the Nilgiris, Erode, Salem, Theni and Kanniyakumari districts.

October 16: Heavy rainfall is forecast in the Nilgiris, Coimbatore, Erode, Tiruppur, Salem, Dharmapuri, Tiruchy, Ariyalur, Perambalur, Madurai, Dindigul, Cuddalore, Kallakurichi, Namakkal, Karur, Thanjavur, Tiruvarur, Mayiladuthurai, Nagapattinam, Pudukkottai and Sivaganga districts, as well as Karaikal.

Residents in the affected districts should follow official weather updates and take precautions during thunderstorms and periods of heavy rainfall.

Chennai Weather Forecast

Chennai is expected to record a maximum temperature of around 36°C and a minimum temperature of approximately 26°C on Tuesday, October 13. Light to moderate rain accompanied by thunderstorms and lightning is likely in some areas.

Southwest Monsoon Ends Below Normal

According to the India Meteorological Department (IMD), the Southwest monsoon ended with 759.4 mm of rainfall against the normal average of 868.6 mm, representing a 12.6% deficit.

The weather outlook k for the coming weeks will be important as Tamil Nadu prepares for the Northeast monsoon, which brings a significant share of the state`s annual rainfall.