Sal, the most developed dive island of the Cape Verde archipelago in the eastern North Atlantic, offers warm 21–27°C water over volcanic walls, collapsed-lava-tube caves, and a sunk Russian trawler, reached on short boat trips from the resort town of Santa Maria.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Sal is the dive hub of Cape Verde (Cabo Verde), a volcanic archipelago roughly 570 km off Senegal in the eastern tropical Atlantic. Diving is centred on the southern resort town of Santa Maria, from which day boats reach most sites within 5–20 minutes; there is no liveaboard scene and conditions are shore-launched day diving. The terrain is volcanic rather than coral-reef tropical — black-rock walls, overhangs, collapsed lava-tube caverns (Buracona's 'Blue Eye', Regona, Tres Grutas), and a deliberately sunk 50 m Russian trawler, the Kwarcit (locally 'Boris'). Marine life skews to Atlantic species: nurse sharks, stingrays, moray eels, jacks, groupers, endemic damselfish, plus seasonal megafauna — humpback whales calve offshore March–May and Cape Verde hosts one of the world's largest loggerhead-turtle nesting populations (nesting Jun–Oct). Honest caveats: this is an Atlantic island, not a calm tropical lagoon. The NE trade winds blow strongest roughly November–June, kicking up swell and chop that can close exposed sites and depress visibility; the warmest, calmest water and best clarity run roughly July–November (with a short, light Aug–Oct wet/humid spell). Visibility is variable (commonly 15–30 m, exceptionally more) and there is no recompression chamber on Sal, so conservative diving and DAN-style evacuation cover matter.
Highlights
What makes this dive worth the trip.
Cape Verde holds one of the world's largest loggerhead sea turtle (Caretta caretta) nesting populations — ranked third globally after Oman and southeast Florida and the largest in the eastern Atlantic, hosting roughly 15% of the global nesting total. Females nest on Sal and Boa Vista beaches from June to October; on Sal alone the conservation NGO Project Biodiversity recorded over 36,500 nests in 2024.
Diving conditions are wind- and swell-driven, not coral-season-driven: the NE trade winds blow strongest from about November to June (also the prime windsurf/kitesurf window), making exposed western sites rough, while the calmest seas, warmest water and best visibility run roughly July through November/December — so the best diving window is the opposite of the classic 'European winter sun' booking habit.
Water temperature swings from about 21–22°C at the late-winter/spring low (Feb–May) to a 26–27°C peak around September, so a 5 mm wetsuit suits the warm season and a 7 mm is advisable in the cool months — warmer than mainland Europe but cooler than equatorial tropics, reflecting Cape Verde's position at the meeting of tropical water and cooler Atlantic currents.
Marine life
24 species you’re likely to encounter on a dive here.
Dive sites
8 signature sites at this destination.
Kwarcit (Boris) Wreck
Sal's flagship dive: a roughly 50 m Russian fishing trawler deliberately scuttled in January 2006 as an artificial reef, sitting upright on a sand-and-gravel bottom south of Sal, about 15 minutes by boat from Santa Maria. The deck lies near 23 m and the seabed at about 28 m; the bridge and storage holds are penetrable, so the dive is restricted to advanced and wreck-certified divers. It has matured into a rich artificial reef populated by nurse sharks, stingrays, schools of jackfish, groupers, moray eels, crustaceans, frogfish and endemic nudibranchs. Current is usually limited, but strong winds can generate noticeable flow.
23–28 madvancedDay boatLightVisibility 15–30 m
Buracona (Blue Eye)
A collapsed lava tube on Sal's rugged northwest coast, famous on land for the 'Olho Azul' (Blue Eye) — a window in the rock where midday sun (roughly 11:00–13:00) floods the cavern with blue light. Underwater it is a cathedral-like cavern system: two entries separated by a large rock, the upper at about 15 m and the deeper at about 28 m, opening into a chamber around 7 m where the light shafts are the spectacle. Best treated as a cavern/cave-aware dive rather than open water, and only dived in calm conditions because the exposed Atlantic-facing coast takes swell.
7–28 mintermediateDay boatLightVisibility 10–25 m
Regona
A labyrinth of interconnected caverns and tunnels on the northwest coast near Buracona, linked by a horseshoe-shaped passage. It shelters large fish and abundant invertebrate life, and is a reliable spot for resting nurse sharks and stingrays tucked into the rock. The overhead environment and the swell-exposed coast make it an intermediate-and-up dive demanding good buoyancy and torch work.
8–22 mintermediateDay boatLightVisibility 10–25 m
Tres Grutas (Three Caves)
A compact reef-and-cavern site whose three small caves sit at around 9 m, draped in coral growth and dense with macro and micro life. The shallow depth and modest overhead make it one of the gentler cavern dives off Sal, suitable for less experienced divers when the sea is calm, though the caves still call for care and a torch.
9–18 mbeginnerDay boatLightVisibility 10–25 m
Cavala
An offshore wall dive about 1 km off Santa Maria for experienced divers, where the reef wall begins near 25–28 m and plunges well beyond recreational limits (reportedly to 60 m+). A cave around 30 m shelters resting rays, and the deep blue water draws pelagics — jacks, tuna, and occasional sharks. Depth and the open-water setting make this an advanced site with real narcosis and gas-management considerations; encounters are not guaranteed.
25–40 madvancedDay boatModerateVisibility 15–30 m
Choclassa
A large offshore reef and pinnacle roughly 4 km off Sal, where diving begins around 14 m and the structure drops away into deep water. Its position out in open Atlantic blue makes it the most likely site for big-animal encounters — moray eels, turtles, stingrays and lobsters on the reef, with pelagic visitors (tuna, jacks, occasional mantas, sharks and, seasonally, whale sharks) cruising the edge. Profiles can stay shallow or go deep, but the exposed offshore setting and depth call for solid experience.
14–40 madvancedDay boatModerateVisibility 15–30 m
Pontinha (Wall)
A wall dive descending from about 14 m to 30 m, scored with nooks and crevices that shelter spiny lobsters, moray eels and rays. A reliable Santa Maria-area site that works for a range of experience levels depending on how deep the profile runs, and a good example of Sal's black volcanic-rock topography.
14–30 mintermediateDay boatLightVisibility 10–25 m
Santo Antão Wreck
A cargo ship that sank in 1966 and now lies broken into three sections on a sand bank at about 11–12 m, off Sal. The shallow depth makes it an accessible wreck for less experienced divers, and the structure has become a fish magnet — trumpetfish, parrotfish, rays and turtles work the scattered wreckage and sand.
11–14 mbeginnerDay boatLightVisibility 10–25 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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