Chennai, March 25: Tamil Nadu is set to experience a rise in temperatures starting Thursday, just before the onset of the intense summer season. The Regional Meteorological Centre has forecast a gradual increase in heat levels over the next few days.
According to the weather bulletin, dry conditions are expected in Tamil Nadu and Puducherry until Friday, with little to no significant rainfall across most parts of the state. However, light scattered rain may occur in the hill regions of Coimbatore and Nilgiris on Friday.
Moderate rainfall is anticipated in several districts of the Western Ghats for three days starting Saturday, which may provide some relief from the rising temperatures.
The meteorological department indicated that maximum temperatures on Wednesday would remain around normal, but could increase by up to 3 degrees Celsius over the next three days. In Chennai and surrounding areas, no rain is expected, with daytime temperatures likely hovering around 34 degrees Celsius, accompanied by dry weather.
Experts have warned that global climate change and a potentially powerful El Niño could lead to extreme heat in the state this year.
M. Rajeev, former secretary of the Ministry of Earth Sciences, cautioned that emerging climate signals suggest a strong likelihood of El Niño developing in the upcoming monsoon season. He noted that this could evolve into a significant event.
While uncertainties remain, a clearer assessment is expected by May 2026. He emphasized the need for authorities to stay vigilant and initiate preparedness measures.
El Niño events are known to disrupt India’s monsoon systems, particularly the northeast monsoon, which is crucial for Tamil Nadu’s annual rainfall.
An intense seasonal event could delay or weaken these rains, increasing the risk of prolonged drought and water shortages. Such a scenario could place significant pressure on reservoirs that supply drinking water to Chennai and surrounding areas. Reduced rainfall in agricultural regions like the Cauvery Delta could adversely affect crop cycles and yields, while increasing reliance on groundwater could further deplete reservoirs, raising serious concerns about long-term water security.
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