Cagarras & Niterói offers a varied mix of reef, wall, cave and drift sites spread across shallow coastal entries and boat-access island dives. The Green Sea Turtle is a common presence, while the Brittle Star and Snail appear across virtually every site. Ilhas Cagarras combines reef and wall diving for intermediate divers, whereas shallower sites such as Costao de Itaipu and Praia Vermelha keep things accessible for beginners. Conditions favour diving most strongly from late spring through early autumn.
Monthly water temperature across Cagarras & Niterói's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature stays relatively stable year-round, warming slightly in late summer and cooling marginally through winter months. The best-months data points toward May through October as the period when conditions are most consistently favoured by local operators. Exposed sites such as Ilhas Cagarras can carry noticeable current, while sheltered shallows like Costao de Itaipu remain calm throughout the year.
25 operators
10 more sites to explore
Water temperature around Cagarras & Niterói ranges from about 21°C in August to 24°C in March, based on satellite sea-temperature data for its dive sites.
In the warm season (about 24°C) a 3mm full suit is comfortable in Cagarras & Niterói; in the coldest months (about 21°C) step up to a 5mm suit.
Fin maps 18 sites in Cagarras & Niterói (18 scuba diving sites and 2 snorkelling spots, with some suited to both).
Across Cagarras & Niterói's dive sites, April, May, June, September and October are most often reported as the best months to visit.
The Green Sea Turtle is a common sighting across the majority of sites, making it the region's signature species. Brittle Star and Snail are observed at essentially every site. Occasional encounters include Bottlenose Dolphin, Wrasses, Spotfin Burrfish, Drum & Croaker, and Crab, while rarer sightings include Eagle Ray, Barracuda, and Humpback Whale.
The majority of sites in the region are rated for beginner divers, including shore-accessible spots like Praia Vermelha and Costao de Itaipu, as well as boat dives such as Face Norte, Portinho, and Mae Ilha Caves. Ilhas Cagarras is rated intermediate and suits divers comfortable with reef and wall diving and some current. The broad skill-level spread means most visiting divers will find appropriate options.
Most sites require a boat, including Ilhas Cagarras, Ilha Rasa, Portinho, and Mae Ilha Caves. Shore entry is possible at Praia Vermelha, while Costao de Itaipu can be reached from either shore or boat. Operators such as XDivers, Dive Soul, Smart Dive, Dolphin Dive Brasil, and Mergulho Carioca, among others, serve the area.
Shallow muck and reef sites like Costao de Itaipu suit slow, observational dives where Seahorse and small invertebrates reward patient divers. Ilha Rasa adds artificial structures alongside natural reef. Mae Ilha Caves offers cave formations at shallow depth. Ilhas Cagarras is the most varied site, combining reef and wall diving with a deeper profile, and is best suited to divers with some prior experience.
