Since 2015 the Caribbean’s sargassum blooms have turned Tulum’s beach — its entire product — into a seasonal variable. Some summers the strip is postcard-clean; others, the seaweed arrives in tonnes, the smell clears the beach clubs by noon, and the photos travel faster than any marketing.
The math is brutal in its simplicity: Tulum sells a beach with rooms attached. A heavy sargassum month discounts the beach to zero, and the room must be repriced against what remains — pool, design, gastronomy, cenotes inland. Operators with real inland programming (lagoon access, cenote clubs, Cobá excursions) hedge the variable; pure beachfront operators absorb it fully.
Three hedges have emerged: physical barriers (expensive, partial, politically contested), inland product (the Aldea Zama and lagoon-side shift of new development), and transparency — hotels that publish daily beach conditions convert the variable from a nasty surprise into a managed expectation, and keep their shoulder-season bookings. The unhedged remainder is where the correction bites hardest.
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