Tamil Nadu Northeast Monsoon 2026: Rainfall 32% Above Normal, Check District-Wise Details

Tamil Nadu has recorded above-normal rainfall during the 2026 Northeast Monsoon season, according to the Chennai Regional Meteorological Centre. Between October 1 and October 30, the state received 217.9 mm of rainfall against the normal average of 165.6 mm, marking a 32% increase.

The Northeast Monsoon began on October 15, bringing widespread rainfall across several parts of Tamil Nadu. The Western Ghats districts and southern districts have recorded particularly high rainfall.

Districts That Received the Highest Rainfall

More than 30 districts have recorded rainfall above their respective normal levels. Coimbatore reported the highest departure from normal rainfall, followed by Tiruvallur, Dindigul and Karaikal.

Districts That Received Below-Normal Rainfall

Some districts recorded rainfall below their normal levels during the same period. Tenkasi reported the highest rainfall deficit among the districts mentioned in the weather bulletin.

Chennai Records Above-Normal Rainfall

Chennai usually receives around 260 mm of rainfall during the period. However, the city recorded 296 mm between October 1 and October 30, which is approximately 14% above normal.

Low-Pressure System Likely to Intensify

According to the weather bulletin issued on October 30, a low-pressure area over the South Andaman Sea and adjoining regions is expected to move west-northwestwards. It is likely to intensify into a depression over the Southeast Bay of Bengal and adjoining Andaman Sea areas on October 31.

The system is expected to move towards the Andhra Pradesh coast over the following two days.

Tamil Nadu Rain Forecast for October 31 and November 1

The Meteorological Centre has forecast light rainfall at isolated places in the Western Ghats districts and coastal Tamil Nadu on October 31. Puducherry and Karaikal may also receive light rain.

On November 1, northern coastal districts, Western Ghats districts and several interior districts, incncluding Madurai, Tiruchirappalli, Namakkal, Salem, Erode and Karur, may experience light to moderate rainfall accompanied by thunder, lightning and strong winds.

Chennai and its suburban areas are also likely to receive light rain on October 31. However, the maximum daytime temperature is expected to remain around 95°F.

Disclaimer: Weather forecasts may change depending on atmospheric conditions. Follow updates and alerts issued by the India Meteorological Department for the latest information.