The Calf of Man sits off the southern tip of the Isle of Man in the Irish Sea, where strong tidal currents sustain high marine biodiversity across reefs, caves, and wrecks. All sites require boat access from Port Erin, and strong currents at several of them, including Calf Sound Drift and Chickens Rock, mean careful tide planning is essential. Highlights include the cavern system at the Sugarloaf Caves, the wreck of the Clan MacMaster, and the kelp-fringed reef at Burroo Ned. Grey seals and harbour seals are present year-round. Water temperatures are cold, sitting around nine degrees in winter and reaching fifteen degrees at the warmest point in late summer.
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Monthly water temperature across The Calf of Man's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures are cold for most of the year, sitting around nine degrees from late winter through spring and reaching fifteen degrees only in September. Summer offers the most practical conditions, both for boat access and for the slightly warmer water.
1 operator
Port Erin, Isle of Man
Water temperature around The Calf of Man ranges from about 9°C in February to 15°C in September, based on satellite sea-temperature data for its dive sites.
In the warm season (about 15°C) a 7mm or semi-dry suit is comfortable in The Calf of Man; in the coldest months (about 9°C) step up to a drysuit.
Fin maps 6 sites in The Calf of Man (6 scuba diving sites), organised into 2 areas.
Across The Calf of Man's dive sites, February, March and July are most often reported as the best months to visit.
2 more sites to explore
