BSAC local diving page says Oban visibility averages 5-20m, water temp is about 14C in July to September, and tides/slack water can be unpredictable.
Sheltered Oban shore dive with a granite wall.
Sheltered Oban shore dive with a granite wall.
Local operators know the tide window, the safest return line, and the bay rules around boats and trainee divers.
Gallanach Reef is a sheltered Oban shore dive on a granite wall with a shallow top, easy slipway access, and predictable navigation when you plan around the tide. It suits entry-level divers who want a calm-bay drill site with cold-water marine life, local boat and trainee traffic, and an easy out-and-back reef circuit.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
1.5m - 9m
Depth Note
Public pages describe a granite wall from about 9m on the seabed up to about 1.5m at the top, with the reef followed as an out-and-back shore dive.
Best Season
July to September, when the local water temperature and visibility are usually most practical.
Typical Conditions
Sheltered cold-water shore diving with a granite wall, tidal planning, and visibility that shifts with weather and slack-water timing.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Use an SMB, keep an eye on boat movement near the pier, and stay alert to tide timing on the return.
Access Restrictions
High tide brings the easiest access and clearest water; bay and slipway users must follow Puffin rules and boat-speed limits.
Legal Notes
Follow Puffin water rules for the bay, especially the marked reef zone and the low-speed requirements for boats.
Community notes to help plan your visit.
Scuba Diving
A shore dive that follows the reef edge and wall out from the slipway, then returns along the granite structure.
Freediving
Not a freedive-first site. Cold water, tide timing, and bay traffic make scuba the normal fit.
Snorkeling
The bay can be explored at the surface in calm water, but the site is mainly a scuba shore dive.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
BSAC local diving page says Oban visibility averages 5-20m, water temp is about 14C in July to September, and tides/slack water can be unpredictable.
Puffin says Gallanach Bay has shore access, an easy slipway, launch and recovery, air fills, guest moorings, kit wash areas, toilets, changing rooms, parking, and crew space.
Know this site? Improve Spot Details.

Sheltered Sound of Mull wall dive base with wreck access.

Loch Long shore dive on old pier remains and A-frame structures.

Loch Long shore dive with a boulder reef, small wall, and anemone rock.

Sheltered shore dive on Loch Long

Slack-water Clyde wreck-and-pipe dive off Wemyss Bay.

Sheltered Cumbrae shore dive with reef, wall, and anchor.