By Muhammad Taher and Mihir R. Bhatt

As this issue highlights, the challenges of coastal disasters and extreme heat are not separate—they are converging. Therefore, South Asia needs a multi-pronged, integrated, and justice-focused approach to protect its most vulnerable coastal communities. While each country in the region faces distinct geographical and contextual challenges, this issue highlights several shared priorities that call for coordinated action. Based on these insights, we recommend the following key areas for collective focus:

1. South Asia must address its inequality issues: There is an urgent need for coordinated and sustained action to mitigate the worsening impacts of rising heat. Although global in scope, the effects of extreme heat are particularly acute in South Asia, where high population density intersects with deep-rooted socioeconomic vulnerabilities. As highlighted by contributors to this Issue, a large section of the population of this region experiences systemic disadvantage, rendering them especially exposed to climate-related stresses such as heat. Political leaders must therefore treat the reduction of structural inequality and poverty as a central climate priority. We know that the people living in the coastal region in South Asia contribute the least to greenhouse gas emissions, but unfortunately, they are the most affected by the consequences of that. In response, climate policy—both mitigation and adaptation—must be grounded in principles of equity and social justice.
2. Integrating Extreme Heat into Coastal Disaster Plans:
   Coastal Disaster Management Plans in South Asia must formally recognise extreme heat as a standalone and compounding hazard—affecting early warning, shelter, health, water, and livelihoods.
3. Investing in Gender-Responsive Heat Adaptation:
   Women and children bear the brunt of heat-induced water stress, health burdens, and caregiving responsibilities. Programs must explicitly address their needs, leadership, and local innovations.
4. Supporting Youth and Community-Led Innovations:
   From clay-based coolers to mangrove-based microclimates, youth-led solutions are emerging. These efforts must be scaled through funding, incubation, and recognition.
5. Strengthening Cross-Border and Regional Collaboration:
   Extreme heat events do not stop at national borders. We have many experiences in the region, and so much to learn from here, yet we do not seem to care enough about it. A South Asia-wide platform—spanning ocean science, public health, disaster risk, and community resilience—can accelerate knowledge sharing and coordinated action.
6. Creating Heat-Resilient Coastal Infrastructure:
   Cyclone shelters, schools, and health centres in coastal zones must be upgraded to withstand not only wind and water but also heat stress. Nature-based solutions, such as mangroves, green roofs, and shaded water stations, must be prioritised.
7. Promoting Ocean and Marine Heatwave Research:
   As marine ecosystems collapse under prolonged warming, there is a need for regionally coordinated research on ocean temperatures, fisheries decline, coral bleaching, and the health of seagrasses and mangroves.
8. Embeding Climate Justice in Risk Finance:
   Coastal populations, least responsible for climate change, are bearing its harshest impacts. Heat adaptation and coastal protection must be financed through global climate justice mechanisms—including the Loss and Damage Fund (of UNFCC/UNDP).

This issue is not a conclusion. It is a call to action to you and us—as policymakers, practitioners, researchers, and communities—to recognise extreme heat in coastal areas as the next frontier of climate risk and resilience in South Asia.

Let us act not only in response to crisis but in anticipation of a hotter, harsher, and more unequal future—cool one shoreline at a time.