Korčula's diving spans reef walls, wrecks and caves across a wide range of depths and skill levels. The Common Octopus and Mediterranean Moray are consistently sighted, alongside Scorpionfish, Madeira Rockfish and Mediterranean Cardinalfish on nearly every reef. Sites like the technical Dubrovnik Wreck and advanced B-24 Liberator sit at the demanding end, while Kamena offers a shore-accessible reef suitable for beginners. Most sites are boat-accessed, and conditions suit warm-season diving from late spring through October.
Monthly water temperature across Korčula's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures rise steadily from spring, peaking in summer before easing through autumn. The warmest months bring the most comfortable conditions, and the best-months data shows a strong concentration of diver activity from late spring through October. Winter diving is possible but temperatures drop noticeably, making a thicker suit necessary.
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Water temperature around Korčula ranges from about 14°C in February to 26°C in August, based on satellite sea-temperature data for its dive sites.
In the warm season (about 26°C) a 3mm full suit is comfortable in Korčula; in the coldest months (about 14°C) step up to a 7mm or semi-dry suit.
Fin maps 21 sites in Korčula (17 scuba diving sites and 5 snorkelling spots, with some suited to both).
Across Korčula's dive sites, May, June, July, August, September and October are most often reported as the best months to visit.
The Common Octopus and Mediterranean Moray are the signature species and are observed across the majority of sites. Scorpionfish, Madeira Rockfish, Mediterranean Cardinalfish and Fireworm are also very frequently recorded. Divers with a keen eye may also spot the Mediterranean Violet Aeolid, Cratena Slug and occasional Gorgonian on the reef structure.
Some sites are well suited to beginners. Kamena is explicitly rated for all levels and can be entered from shore as well as by boat, making it a good first dive in the area. Garma also carries a beginner rating, though its reef and cave topography means depth awareness remains important. The majority of sites, however, are rated intermediate or above.
The vast majority of dive sites in Korčula are boat-access only, so planning around a dive operator or charter is advisable. Kamena is the notable exception, offering both shore and boat entry. Lumbrela is also a shore-entry site, giving self-sufficient divers a couple of options without requiring a boat.
Korčula has a varied selection of wrecks. The B-24 Liberator is an advanced-rated deep wreck requiring boat access, while the Garda Wreck suits intermediate divers at moderate depth. The Dubrovnik Wreck sits at significant depth and demands technical diver qualifications with decompression training. All three are boat-access sites.
