Most parts of Tamil Nadu are set to face sizzling weather until mid-September, despite predictions of light to moderate rainfall in certain coastal and interior districts.
- Sizzling weather is expected to persist across most of Tamil Nadu until mid-September.
- Palayamkottai recorded temperatures exceeding 40.2°C for the third consecutive day.
- Light rainfall was observed in Chennai, Nilgiris, and Thoothukudi.
- El Niño and rising sea surface temperatures are driving the extreme heat.
The scorching heatwave is expected to continue across much of Tamil Nadu, according to the Regional Meteorological Centre (RMC). While most of the state braces for high temperatures until mid-September, there is a glimmer of relief for some, as light to moderate rainfall is predicted for north coastal and interior districts through September 8.
On Thursday, light rainfall was recorded in Chennai and its outskirts, as well as in the Nilgiris and Thoothukudi districts. However, the absence of a significant weather system and a weakened Southwest monsoon mean that most areas will continue to experience temperatures significantly above normal. In a stark indicator of the heat, Palayamkottai hit 40.2 degrees Celsius, marking its third consecutive day above the 40-degree mark.
Why This Matters
BozokMedia analysis shows that the combination of a weak monsoon and El Niño-induced warming is creating a dangerous thermal environment. This prolonged heat stress can lead to increased water scarcity and significant health risks for the vulnerable population in southern India.
The southern peninsular region lacks a significant weather system, as monsoon activity is currently concentrated around West Bengal and Odisha.
RMC officials noted that a feeble trough along the Tamil Nadu coast could trigger light rainfall in coastal areas. Meanwhile, interior regions like Tiruchi and Madurai, currently suffering under sweltering conditions, may see convective rainfall as early as Friday.
Historical Context of Heat Extremes
The state has witnessed an unusual number of 'hot days' this season. In June, temperatures crossed 40°C on 15 different days. July was even more extreme, recording 20 hot days—the highest in recent history, surpassing the previous high set in 2019. August followed with eight hot days, highlighting a consistent upward trend in thermal intensity.
| Month (2026) | Days with Temp > 40°C |
|---|---|
| June | 15 Days |
| July | 20 Days |
| August | 8 Days |
According to V.R. Durai, Head of the RMC, the primary drivers behind this thermal surge are El Niño conditions and the warming of sea surface temperatures. The RMC anticipates a marginal increase in rainfall activity starting September 8, particularly benefiting the Western Ghats and north coastal regions.
Frequently Asked Questions
1. Why is Tamil Nadu experiencing such high temperatures?
The heat is primarily attributed to El Niño conditions, warming sea surface temperatures, and a weak Southwest monsoon.
2. Will Chennai receive rain soon?
While Chennai has seen light convective rainfall, more organized rainfall is expected to increase slightly around September 8.
