UN urges urgent global action as rising seas threaten coastal communities

Friday 25 September 2026 - 18:32

By: Azzat Manal

UN urges urgent global action as rising seas threaten coastal communities

The United Nations is calling for urgent international action to address the accelerating threat posed by rising sea levels, warning that coastal communities, small island states and low-lying countries are facing increasingly severe consequences from climate change.

The appeal came during a high-level meeting at UN headquarters in New York on September 24, where world leaders and experts discussed the growing risks associated with rising seas. The meeting also resulted in the adoption by consensus of a new UN declaration focused on stronger international cooperation and coordinated action.

UN Secretary-General António Guterres warned that the consequences of rising seas extend far beyond environmental damage, affecting housing, infrastructure, food and water security, livelihoods and cultural heritage. The UN says these risks are already being felt by communities in coastal areas around the world.

According to the United Nations, global sea levels recorded their largest annual increase in 2024, rising by almost six millimetres. Around 770 million people live less than five metres above the high-tide line, leaving large populations increasingly exposed to flooding, erosion and saltwater intrusion.

Guterres linked the acceleration of sea-level rise to global warming driven largely by greenhouse gas emissions from fossil fuels. He called for faster reductions in emissions, a rapid expansion of renewable energy and stronger efforts to improve energy efficiency, while also urging countries to reduce methane emissions and halt deforestation.

The UN chief also stressed the need to strengthen adaptation measures. He called for greater investment in resilient infrastructure, wider access to early-warning systems and more predictable financing for countries facing unavoidable climate impacts. The UN has identified small island developing states, coastal countries, delta regions and low-lying cities among those particularly exposed to the consequences of rising seas.

Another issue highlighted during the meeting was the legal and social impact of sea-level rise. The UN has warned that displacement, loss of land, saltwater intrusion and damage to cultural heritage could create complex challenges for affected communities and governments. The newly adopted declaration addresses these concerns alongside science, adaptation, finance and resilience.

The declaration reflects growing international recognition that sea-level rise requires coordinated action across multiple areas. Its priorities include improving scientific knowledge and data, strengthening adaptation and resilience, addressing social and economic impacts, protecting livelihoods and heritage, and examining the legal dimensions of a changing coastal environment.

The United Nations has emphasized that the latest agreement must now be followed by concrete measures. For vulnerable countries and communities, the challenge is not only to limit future warming but also to prepare for changes that are already affecting coastlines, economies and populations around the world.