Cayo Guillermo offers a compact set of coral reef sites spread across sheltered and boat-access locations in Jardines del Rey. The reefs range from very shallow entries suited to beginners through to intermediate-depth walls at La Puntilla. Grunt is a constant presence across the sites, with Barracuda, Yellowtail Snapper, European Parrotfish, and Tarpon appearing regularly. Occasional sightings of Grey Reef Shark give the diving a rewarding edge.
Monthly water temperature across Cayo Guillermo's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water stays warm throughout the year, rising to its peak through the summer months and easing slightly in winter without becoming cold. The summer peak aligns with the best-rated diving months, when conditions across the reef sites tend to be most settled. Sites like La Puntilla carry mild currents, so divers should check conditions before entry.
10 operators
7 more sites to explore
Water temperature around Cayo Guillermo ranges from about 26°C in January to 30°C in July, based on satellite sea-temperature data for its dive sites.
In the warm season (about 30°C) a rash guard or 3mm shorty is comfortable in Cayo Guillermo; in the coldest months (about 26°C) step up to a 3mm full suit.
Fin maps 11 sites in Cayo Guillermo (7 scuba diving sites and 5 snorkelling spots, with some suited to both).
Grunt is the most consistently observed species across the reefs. Barracuda, Yellowtail Snapper, European Parrotfish, Tarpon, and Spadefish appear on a regular basis. Grey Reef Shark sightings are occasional but observed, making them a real highlight for divers visiting the area.
Several sites cater well to less experienced divers. La Corona and Caleta 1 are both rated beginner-level, with shallow reef structures that provide a comfortable introduction to diving. Las Pajuals is also very shallow and sheltered. La Puntilla is the one site rated intermediate, carrying mild currents at greater depth.
Most sites require a boat, including La Corona and Caleta 1. La Puntilla is the notable exception, offering shore entry directly onto the reef. Cuba Santa Clara Dive Center is the operator listed in the area and would be the practical starting point for arranging boat-based excursions.
The sites range from very shallow reef patches to moderate-depth coral structures. Caleta 1 is the only site that functions well for both diving and snorkelling. Snorkel-focused sites tend to be shallower and more sheltered, while dive-only sites like La Puntilla sit deeper and may see mild current. All sites listed are reef formations rather than wrecks or walls.
