The India Meteorological Department (IMD) has warned of heavy rainfall across several parts of Tamil Nadu over the next few days as conditions become favourable for the onset of the northeast monsoon over southern peninsular India. According to the report published on October 14, 2026, three districts are under an orange alert today, while rainfall is expected to spread across more districts on October 15 and 16.
Chennai and its surrounding areas may also experience rainfall, with heavy showers possible on October 16.
Orange Alert in 3 Districts Today
The IMD has issued an orange alert for three districts in Tamil Nadu on October 14:
- Mayiladuthurai
- Nagapattinam
- Ramanathapuram
Heavy rainfall is also possible at isolated places in Thanjavur, Tiruvarur and Cuddalore districts.
Residents in the affected areas should remain alert to changing weather conditions and follow official weather updates.
Orange Alert for 4 Districts Tomorrow
On October 15, an orange alert for very heavy rainfall has been issued for four districts:
- Nilgiris
- Coimbatore
- Theni
- Virudhunagar
People in these districts should take precautions, particularly in areas vulnerable to waterlogging, flooding and weather-related travel disruptions.
Heavy Rain Expected in 15 Districts on October 15
According to the report, heavy rainfall is likely in the following 15 districts on Thursday, October 15:
- Mayiladuthurai
- Nagapattinam
- Tiruvarur
- Thanjavur
- Cuddalore
- Tenkasi
- Kanniyakumari
- Kallakurichi
- Salem
- Tiruchirappalli
- Kancheepuram
- Chengalpattu
- Ranipet
- Tiruppur
- Dindigul
Residents should monitor local forecasts and allow additional travel time if heavy rain affects roads and transport services.
Heavy Rain Warning for 29 Districts on October 16
The weather department has forecast the possibility of heavy rainfall across 29 districts on Friday, October 16.
The districts listed in the report are:
Nilgiris, Coimbatore, Erode, Tiruppur, Dindigul, Theni, Virudhunagar, Tenkasi, Kanniyakumari, Ramanathapuram, Sivaganga, Tiruchirappalli, Namakkal, Dharmapuri, Krishnagiri, Salem, Tiruvannamalai, Kallakurichi, Villupuram, Chengalpattu, Kancheepuram, Tiruvallur, Ranipet, Cuddalore, Mayiladuthurai, Nagapattinam, Tiruvarur and Thanjavur.
The report states that heavy showers are possible in these areas. Actual rainfall intensity may vary by location.
When Will It Rain in Chennai?
Chennai and its suburban areas may receive moderate rainfall at some places on October 14 and 15.
The IMD has also indicated the possibility of heavy rainfall in Chennai on October 16. Residents should keep track of updated forecasts, especially when planning road travel or outdoor activities.
Northeast Monsoon Conditions Develop
The forecast comes as weather conditions become favourable for the onset of the northeast monsoon over southern parts of peninsular India.
The northeast monsoon is an important source of rainfall for Tamil Nadu and neighbouring regions. Changes in monsoon conditions can bring widespread showers, with locally intense rainfall in some districts.
Precautions During Heavy Rain
Residents in areas covered by rainfall warnings should:
- Follow official IMD and Tamil Nadu government advisories.
- Avoid crossing flooded roads, overflowing streams and waterlogged underpasses.
- Take extra care when travelling during intense rainfall.
- Keep away from exposed electrical wires and flooded electrical installations.
- Follow local authorities’ instructions if flooding or other emergencies occur.
The district-wise forecast is based on the report published on October 14, 2026. Residents should check the latest IMD bulletins for updated alert levels and local conditions.
