Sargassum Inundates Key Cancun Beaches, Turning Turquoise Waters Brown

Brown sargassum covering a Cancun beach in the hotel zone

Cancun, Quintana Roo — The turquoise waters that define Cancun’s beaches are turning brown in several stretches of the Hotel Zone as a massive sargassum arrival hits some of the most popular spots for domestic and international tourists.

According to the latest Sargassum Traffic Light Map, released May 26, 2026, at least four beaches are under red alert for “excessive” algae accumulation: Playa Gaviota Azul, Playa Coral, Punta Cancun, and Playa Chacmol.

The most visible impact is at Playa Gaviota Azul, near the bar and nightclub district, where sargassum covers large areas of sand and darkens the water. At Playa Coral, Punta Cancun, and Chacmol, cleanup crews continue removing tons of algae to minimize disruption to tourism and recreational activities.

Beaches including Marlin and Ballenas remain under orange alert due to abundant algae. Experts attribute the increase to strong southeast winds and recent wave action, which have pushed large quantities of sargassum toward the Mexican Caribbean coast.

Despite the challenging conditions, some beaches still offer good conditions for visitors. Playa Caracol, Tortugas, Langosta, Las Perlas, and Playa del Niño remain under green alert, thanks to the natural protection provided by the Bahia de Mujeres.

Authorities urged residents and tourists to check daily updates of the traffic light map before heading to the beach, as cleanup efforts continue at various points in the Hotel Zone.

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By Ana Reyes

Ana Reyes covers environmental policy, conservation initiatives, infrastructure projects, and political developments across the Yucatán Peninsula for Riviera Maya News & Events. She reports on issues from sargassum management and reef conservation to the Maya Train, coastal development, and state and federal policy affecting Quintana Roo and the broader peninsula.Ana has covered environmental and political news since 2023, tracking key developments in Mexico's environmental regulations, coral reef protection, coastal zone management, and the intersection of tourism development with conservation efforts. Her reporting spans from Cancun's hotel zone to the Sian Ka'an Biosphere Reserve and the culturally significant regions of the Yucatán interior.Ana is fluent in English and Spanish, and draws from a wide range of sources including government environmental agencies, conservation organizations, academic researchers, and local community leaders to provide balanced, well-sourced coverage. She is particularly focused on how environmental policy decisions affect the daily lives of residents and the long-term sustainability of the region.For story tips: ana@rivieramayanews.mx