The Outer Hebrides sit within Atlantic and Minch waters, where conditions are cold and clear year-round. All sites in our database are shore-entry, ranging from sheltered beginners' bays like Seilamol Bay and Hushinish Beach to the advanced deep kelp zone at Hushinish Slipway. Seagrass meadows, kelp forests, and reef habitats appear across the islands, with species including conger eels, catshark, and European spiny lobster recorded at local sites. Water stays cold throughout the year, sitting in single figures through winter and reaching the low to mid teens only in late summer, so a drysuit is standard.
Monthly water temperature across Outer Hebrides's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures remain cold all year, sitting around eight degrees in late winter and rising only to fourteen degrees by August and September. The summer months offer the most comfortable conditions and the best visibility, which can extend to thirty metres on good days in the more exposed sites.
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Water temperature around Outer Hebrides ranges from about 8°C in February to 14°C in August, based on satellite sea-temperature data for its dive sites.
In the warm season (about 14°C) a 7mm or semi-dry suit is comfortable in Outer Hebrides; in the coldest months (about 8°C) step up to a drysuit.
Fin maps 8 sites in Outer Hebrides (2 scuba diving sites and 6 snorkelling spots).
8 more sites to explore
