Climate in the heads, South Asia’s heat is becoming an economic crisis

Dhaka, 16 August 2026: Extreme heat is increasingly disrupting work, incomes and economic activity across South Asia, forcing governments to treat rising temperatures as more than a seasonal weather problem. A new World Bank assessment says extreme heat already subtracts the equivalent of 31 million full-time jobs from the region’s economy each year, while unchecked warming could reduce South Asia’s GDP by nearly 7 percent by 2050.

The impact is particularly severe for workers whose incomes depend on daily physical activity. Construction workers, farmers, transport workers, street vendors and others in the informal economy often cannot simply stop working when temperatures become dangerous.

Heat is no longer only a climate risk. It is increasingly a jobs, productivity and growth risk.

When heat becomes an economic shock

South Asia faces a difficult combination of high temperatures, rapid urbanisation, large informal economies and limited access to cooling. The World Bank estimates that the number of people exposed to at least one month of dangerous heat stress each year could rise from about 120 million today to 520 million by 2070.

Heat affects economies through several channels. Workers slow down or reduce working hours, businesses face operational disruptions, electricity systems come under greater pressure and households spend more on water, cooling and healthcare.

The burden is also uneven. A heatwave can cause informal workers to lose around 40 percent of their earnings while simultaneously increasing their daily costs, according to the World Bank.

This makes extreme heat an economic-distribution issue as much as an environmental one. People with fewer savings, weaker social protection and limited access to air conditioning or safe workplaces are generally less able to absorb the shock.

Bangladesh on the frontline

Bangladesh illustrates how quickly heat can translate into economic losses. World Bank research published in 2025 estimated that extreme heat caused about 250 million lost workdays in Bangladesh in 2024, with an associated economic cost of US$1.3–1.8 billion, equivalent to roughly 0.3–0.4 percent of GDP.

The effects extend beyond immediate productivity. Higher temperatures can increase health risks, reduce agricultural performance and raise demand for electricity as households and businesses seek cooling.

Bangladesh also faces a particular vulnerability because a large share of economic activity depends on outdoor and physically demanding work. When extreme heat reduces the number of hours people can safely work, the consequences can reach household income, food security and wider economic growth.

The World Bank has also found that Bangladesh’s rising temperatures are already affecting living standards, with earlier projections estimating a potential 6.7 percent reduction in GDP by 2050 under climate-change impacts.

Cities, productivity and the cost of adaptation

The challenge is becoming increasingly urban. South Asia’s cities concentrate workers, businesses, transport networks and energy demand, while dense construction and limited green space can intensify local heat through the urban heat-island effect.

That means economic policy and climate policy can no longer operate separately. Governments need to consider heat resilience when planning housing, transport, workplaces, public spaces, electricity systems and health services.

Practical measures include:

Expanding shade, trees and heat-resilient public spaces.

Improving access to drinking water and cooling facilities.

Adjusting working hours during periods of dangerous heat.

Strengthening heat-warning and public-health systems.

Investing in energy-efficient cooling rather than relying solely on higher electricity consumption.

These measures should be treated as productivity investments rather than simply climate expenditure. A worker who can remain healthy and productive during extreme heat represents economic capacity protected.

From weather warning to economic strategy

South Asia needs to rethink how it measures the cost of extreme heat. Conventional economic statistics can overlook lost working hours, reduced productivity, unpaid care work and health effects that accumulate gradually rather than appearing as a single disaster.

The region is also facing a major employment challenge. The World Bank estimates that South Asia needs to create jobs for roughly 280 million additional working-age people by 2050. At the same time, rising temperatures threaten precisely the sectors and workers that must sustain that growth.

The policy question, therefore, is no longer simply how to survive hotter summers. It is how to build an economy capable of functioning in a hotter climate.

For Bangladesh and its neighbours, heat resilience should increasingly be considered part of economic security, labour policy and development planning. If governments treat extreme heat only as a weather emergency, they risk addressing symptoms while allowing a deeper productivity crisis to grow.