Beyond high temperatures: understanding heat stress in Tamil Nadu

For Tamil Nadu, peak summer traditionally ends in May. But this season, temperatures hovering around 40 degrees Celsius in several districts extended the searing conditions well into June, leaving residents grappling with exhausting days and uncomfortable, warm nights. Clearly, the time has come to go beyond seasonal, templated responses. It is against this backdrop that the State has recently rolled out its Heat Action Plan 2026, introducing measures such as local heat vulnerability mapping, early warning systems, and targeted interventions for vulnerable communities. At the same time, meteorologists are closely monitoring the tropical Pacific for strengthening of El Nino, which could influence weather patterns, rainfall, and heat risks in the months ahead. From outdoor workers and children to the elderly in dense urban neighbourhoods, rising temperatures and heat stress are a true test of endurance for all.