Heatwaves now form a regular part of summer across the Indian subcontinent. They disrupt daily life for millions of people. These events also place heavy pressure on systems designed to protect communities. Even small rises in temperature create large real-world effects.
People lose wages and face more hospital visits. Productivity drops while electricity bills rise. The hardest impacts fall on the most vulnerable groups. Therefore, solutions must target those who need support the most.
Heatwaves stand out among extreme weather events. They strongly affect people’s ability to work and earn. The Lancet Countdown estimated that heat cost India around 247 billion potential labour hours in 2024. This loss equalled about 194 billion dollars in income. A recent study from the University of California further suggested that one day of extreme heat can cause as many as 3,400 additional deaths across India.
Temperatures near 50 degrees Celsius appear more often across South Asian plains. Researchers need clearer understanding of how extreme heat affects people. They also need practical safeguards against these risks.
Outdoor workers and manual labourers face high exposure. So do people who care for children or elderly family members. Residents of crowded urban areas and those without adequate healthcare remain especially vulnerable. One UNEP estimate found that around 82 percent of India’s informal workforce lacks proper protection.
Construction workers often illustrate these challenges. Many must complete fixed hours and bring their families to work sites. Children then face risks of dehydration, heat stroke and injury. Workers themselves also suffer. Some avoid bringing cooked food because heat spoils it quickly. Illness or childcare needs can then remove income from the household.
People running households face harder daily choices. They decide whether to send children to school during extreme heat. They spend long hours in water queues. Even simple cooking decisions add stress. When millions face similar problems at once, health systems, urban infrastructure and the economy all feel the pressure.
Communities need solutions that protect individuals while strengthening larger systems. Protecting livelihoods forms a clear priority. Parametric insurance offers one useful tool. It pays out based on a specific trigger rather than assessed damage. This approach delivers fast and predictable relief.
Health systems can improve readiness before peak temperatures arrive. Early warning systems work best when linked to local health responses. Primary health centres should identify and treat heat exhaustion, dehydration and heat stroke. Frontline workers need proper training. Rising heat also expands the range of diseases such as dengue and malaria. Therefore, heat preparedness should connect with broader disease surveillance.
SEWA’s parametric insurance programme serves as a practical example. It supports informal women workers in India. Women pay 250 rupees each year. When temperatures stay above 40 degrees Celsius for two days, they receive automatic cash assistance. This money helps cover income loss, buy essentials or avoid emergency debt.
The South Asia Climate-Health Desk provides another useful model. The WHO-WMO Climate and Health Joint Programme launched this initiative. Partners including IITM and IMD help develop decision-support tools. The programme turns climate and weather data into timely health action. Vulnerable communities and health authorities can then respond before and during dangerous heat events.
Every solution must match how people actually live through heat. Many receive heat alerts on their phones. Yet staying home is rarely possible. Preparedness must therefore support those most exposed and least protected. Workers need ways to earn without risking their health. Children and older people need safety. Cities must keep functioning without shifting the full cost of heat onto those least able to bear it. Building these safeguards remains an urgent priority.