Satellite monitoring indicates 2026 is on course to be at least the second-largest sargassum year recorded, while Mexico’s Caribbean coast is facing unprecedented beach accumulation. Quintana Roo expects about 119,000 tonnes ashore this year, prompting closures and an emergency federal response; Reuters estimates annual economic losses of roughly US$2 billion in the state.

Why it matters to the Caribbean: This is a basin-wide environmental, public-health, and tourism threat. Heavy strandings can force beach closures, damage fisheries and coastal ecosystems, expose workers and residents to harmful decomposition gases, and impose major cleanup costs on tourism-dependent islands.

Implications for Antigua and Barbuda: Antigua and Barbuda could face increased shoreline cleanup expenses, reputational risks for affected beaches, and pressure on hotels, fisheries, and coastal communities. The exact local impact will depend on currents and winds, so national monitoring and rapid-removal planning are important.