Image Source : India Today
On March 18, 2026, the India Meteorological Department (IMD) forecast light to moderate rainfall with thunderstorms in several parts of Tamil Nadu. Chennai, Coimbatore, and Thoothukudi are expected to see scattered showers this week, offering relief from rising summer temperatures and high humidity levels.
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Chennai will remain partly cloudy with isolated showers likely in the evening. The maximum temperature is expected around 32°C, with humidity levels staying high. Rainfall chances range between 5–14%, particularly in coastal areas.
Coimbatore And Thoothukudi Outlook
Coimbatore and Thoothukudi are likely to experience light to moderate rainfall accompanied by thunderstorms. These showers will provide temporary relief from heat while maintaining humid conditions. Farmers in these regions may benefit from the rainfall, especially for short-term crops.
Weekly Weather Pattern
The IMD has predicted intermittent rainfall across Tamil Nadu until March 24. Thunderstorms and lightning are expected in select districts, with coastal regions seeing more frequent showers. This spell is expected to ease water stress and provide short-term relief to residents.
Key Highlights
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IMD predicts light to moderate rainfall on March 18
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Chennai may see isolated evening showers
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Coimbatore and Thoothukudi likely to witness thunderstorms
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Rainfall expected intermittently across Tamil Nadu until March 24
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Relief from intensifying summer heat anticipated
Sources: IMD Chennai, The Hindu, Times of India, MSN Weather
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