South Brittany and Morbihan is defined by its wreck-heavy dive roster, rocky reefs and the sheltered island clusters of the Morbihan Islands sub-area. Currents run strong at many sites, shaping the marine life: European Common Cuttlefish, Conger Eel and Marbled Electric Ray are regularly observed, alongside Hermit Crab, Brittle Star and the occasional Gray Seal. The site range spans shallow beginner wrecks to deep advanced dives, with most access by boat.
Monthly water temperature across South Brittany & Morbihan's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures rise from cool spring conditions through a warmer summer peak in July and August, making the summer months the most comfortable for longer dives. Currents can be strong across many sites, and visibility is moderate, so timing dives around slack water is worthwhile. Autumn sees temperatures drop gradually, extending reasonable conditions into October for those prepared with appropriate exposure protection.
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Water temperature around South Brittany & Morbihan ranges from about 10°C in January to 18°C in August, based on satellite sea-temperature data for its dive sites.
In the warm season (about 18°C) a 5mm suit is comfortable in South Brittany & Morbihan; in the coldest months (about 10°C) step up to a drysuit.
Fin maps 87 sites in South Brittany & Morbihan (62 scuba diving sites and 26 snorkelling spots, with some suited to both).
Across South Brittany & Morbihan's dive sites, June, July and August are most often reported as the best months to visit.
European Common Cuttlefish are observed across the vast majority of sites and are the region's most recognisable encounter. Conger Eel, Wrasses, Tompot Blenny and Cod are commonly recorded, while Marbled Electric Ray, Common Octopus and Gray Seal appear on occasion. Invertebrate life is rich, with Hermit Crab, Brittle Star, Common Sea Star and Sea Slug featuring on most dives.
Yes, several sites are rated for beginners. The Thuringen wreck off Île de Groix is shallow and accessible from shore or boat, making it a straightforward first wreck dive. The Laos Wreck and Pointe de Pen Men also sit within comfortable depth ranges for newly qualified divers. More advanced sites like the U 171 wreck should be reserved for experienced divers comfortable with depth and current.
Shore entry is available at a small number of sites, including Men Du in the Morbihan Islands and the Thuringen wreck off Île de Groix. Most sites in the region, however, require boat access, and several operators based locally run regular trips across the main dive areas.
