The coastlines of Asia and the Pacific serve as vital drivers of regional prosperity, generating $7 trillion in annual economic output, but they face escalating environmental hazards that could cause hundreds of billions of dollars in damage unless urgent investments in coastal protection are made.
According to a report released today by the Asian Development Bank (ADB), titled Asia–Pacific Climate Report 2026: Coastal Risks on the Rise—Actions for a Resilient Future, coastal communities across the region are increasingly threatened by rising sea levels and worsening severe weather.
Across 30 coastal economies studied, annual flood damages currently stand at approximately $27 billion. Without proactive adaptation measures, these annual costs could increase more than sixfold by 2050, reaching between $172 billion and $199 billion. By 2100, annual damages could soar nearly twentyfold, ranging from $520 billion to $739 billion.
To ensure continued economic growth and protect vulnerable communities, the report stresses the necessity of strategic investments in coastal resilience. Securing the region’s economic future and keeping annual flood damages close to current levels will require an estimated $9 billion to $19 billion per year dedicated to coastal defense and adaptation measures.
The study underscores that the financial benefits of taking early action far outweigh the costs. Investing in resilience measures now could generate economic returns up to 20 times greater than the initial outlay, avoiding between $178 billion and $360 billion in flood damages each year.
