Tulum tide times

Tulum is on the Caribbean coast of the Yucatán Peninsula, south of Playa del Carmen, where a late Maya archaeological zone sits on a cliff directly above the beach. The ruins-on-cliff-above-turquoise-water composition is the most recognised image in Mexican beach tourism. The Caribbean tidal range here is diurnal and small: one high and one low per day, mean range about 0.3 to 0.5 metres. Water level changes are more significantly driven by wind and swell than by the astronomical tide.

The Gran Cenote and the Dos Ojos cave system — just inland from Tulum beach — are the headline snorkelling and diving experiences. The Yucatán Peninsula sits on a massive porous limestone platform with an underground cave system (Sistema Dos Ojos and Sac Actun) that is the world's largest flooded cave system by mapped length (approximately 380 km explored). The cenotes (sinkholes where the cave roof has collapsed) give access to the cave system; visibility in the freshwater sections exceeds 100 metres. Snorkelling in the Gran Cenote is accessible to anyone who can swim; cave diving requires technical cave certification.

The Caribbean reef just offshore from Tulum Beach is part of the Mesoamerican Barrier Reef — the world's second-largest coral reef system. Snorkelling from the beach is possible in calm conditions but the reef section offshore from the hotel zone is damaged by boat anchoring; the best reef snorkelling requires a short boat trip to healthier sections. Dive boats from Tulum operate to the Cozumel channel (30 minutes north) for world-class wall diving.

Humpback whale sharks aggregate in the open Caribbean north of Tulum from May through September — day trips from Puerto Morelos (1.5 hours north) or Cancún access the aggregation sites. The experience is ocean-based, more exposed than La Paz in Baja, requiring comfortable ocean swimming skills.

Tulum town has shifted dramatically from a backpacker destination to a high-end 'boho-luxury' beach resort in the past decade. The hotel zone on the beach road has very high accommodation prices; the town centre (Tulum Pueblo) 3 km inland is more affordable. The archaeological zone entry is by foot or bicycle from the parking area; no vehicles inside the site.

Predictions on this page come from Open-Meteo Marine, a gridded global ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height — model-derived, not from a local gauge. For Mexican tide data, consult SEMAR at digmer.semar.gob.mx.