Lake Thun is a freshwater diving destination defined by dramatic wall topography, drop-offs, and a varied mix of artificial reefs and reef structures. Sites range from shallow, gentle slopes suited to beginners through to deep walls that challenge intermediate divers. Common Perch, Burbot, Pike, and American Crayfish are regularly observed across the sites. Shore entry dominates, with a handful of boat-access sites rounding out the roster.
10 operators
Thierachern, Switzerland
Heimberg, Switzerland
Grone, Switzerland
Hilterfingen, Switzerland
Fin maps 39 sites in Lake Thun (37 scuba diving sites and 2 snorkelling spots).
28 more sites to explore
Common Perch is the most frequently observed species across Lake Thun sites, followed closely by Burbot and Snail. Divers also encounter American Crayfish, Pike, Barbel, Chub, Bullhead, Carp, and Trout at various sites. Freshwater Crayfish and Lake Trout have been recorded too, making each dive a reasonable prospect for a varied freshwater catch.
A good number of Lake Thun sites are rated for beginners, including Churchill, Längenschachen, Hotel Bellevue, and Lac des Bousses. These tend to offer shallow to moderate depths and straightforward entry points. Intermediate-rated sites such as Wasserfall, Balmholz, and Gunten Bad involve deeper walls and canyons and are best approached once divers are comfortable with buoyancy and navigation.
Wall and drop-off sites make up the bulk of the diving, with steep structures found at Fischbalme, Gunten Bad, Balmholz, and Wasserfall. Artificial reef sites such as Churchill and Lac des Bousses offer a softer introduction to the lake, with submerged structures attracting freshwater life. Längenschachen stands out for its seagrass beds and gently sloping profile, providing a contrasting experience to the vertical terrain elsewhere.
Several established operators are based around Lake Thun, including Dive Center Thunersee, Nemo Tauchsport KLG, Xtrem Diving, Crazy Divers, Tauchschule Crazy-Divers, and Meliti Travel. Between them they cover guided dives, instruction, and equipment, giving visiting divers good options whether they are looking for a guided introduction or a more independent setup.
