Comino's underwater character is defined by an exceptional concentration of caves and caverns, a deliberately sunk patrol boat that now serves as an artificial reef, and reef walls that drop from shallow plateaus into deeper water. The cave systems on the island's north side draw beginners and intermediate divers alike, while the scuttled vessel offers a rare wreck experience at accessible depths. Snorkellers can explore the shallow sandy strait of The Blue Lagoon from shore. Wrasse, Bream, Common Octopus, and European Common Cuttlefish are consistently observed across sites, with the Flying Gurnard and Mediterranean Moray adding character to the reefs.
Monthly water temperature across Comino's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures are coolest through late winter and early spring, making a thicker wetsuit worthwhile for those diving in those months. Warmth builds steadily from late spring through summer, peaking in autumn when conditions are also at their most popular with divers. The peak months cluster around May, October, and the summer season, suggesting calm and clear conditions are most reliable then.
3 more sites to explore
Water temperature around Comino ranges from about 16°C in February to 26°C in September, based on satellite sea-temperature data for its dive sites.
In the warm season (about 26°C) a 3mm full suit is comfortable in Comino; in the coldest months (about 16°C) step up to a 7mm or semi-dry suit.
Fin maps 11 sites in Comino (10 scuba diving sites and 5 snorkelling spots, with some suited to both).
Comino's reefs and caves host a wide variety of observed species. Wrasse species including the Turkish Wrasse and Cleaver Wrasse are very commonly encountered, as are Bream, Painted Comber, and Castagnole. Signature species include the Common Octopus, European Common Cuttlefish, Flying Gurnard, and Mediterranean Moray, while nudibranch fans will find the Mediterranean Violet Aeolid and Cratena Slug reliably present across many sites.
The majority of Comino's dive sites are rated for beginners, including the cave systems at Santa Marija Cave and Santa Maria Caves, the shallow reef and cave at Blue Lagoon, and the scuttled patrol boat wreck. Lantern Point, with its steep wall and vertical tunnel, steps up to intermediate level. All sites are boat-access only, so divers should be comfortable with boat entry and exits.
Santa Marija Cave is a system of at least ten distinct caverns on the north side of the island, offering a broad cavern experience at beginner level. Santa Maria Caves adds drift and reef elements alongside cave and cavern structures. Crystal Lagoon features a long boulder-filled tunnel, while Lantern Point has an L-shaped vertical chimney that appeals to more experienced divers looking for a technical edge within a wall dive.
The P-31 and P31 Patrol Boat sites are both boat-access only, so independent shore access is not an option. The scuttled vessel rests upright on a sandy seabed and is suitable for beginners, making it an easy inclusion on a boat dive itinerary. The Blue Lagoon is the only site in Comino with shore entry, though that is a snorkel-only location rather than a wreck.
