Explore Lake Thun

Lake Thun, nestled in the picturesque Bernese Oberland, offers a unique diving experience in Switzerland's largest lake situated entirely within one canton. This alpine lake invites divers to explore its clear, freshwater depths, surrounded by stunning mountain scenery. With water temperatures ranging from 13°C–16°C/55°F–60°F in spring and fall, 16°C–18°C/60°F–64°F in summer, and chilling to 10°C/50°F in winter, Thunersee provides diverse conditions suitable for both recreational and technical diving throughout the year.

Diving in Lake Thun is particularly appealing due to its average visibility of 6–10 meters/20–33 feet, allowing for clear views of the underwater landscape. Adventurous divers can explore its maximum depth of over 46 meters, making it an intriguing destination for those interested in deeper dives. Whether you're interested in altitude diving or curious about the unique freshwater environment, Lake Thun's combination of stunning natural beauty and varied conditions makes it a must-visit location for divers seeking an unforgettable experience.

Dive Activity

Diving in Lake Thun

Lake Thun, nestled in Switzerland's Bernese Oberland, offers diverse freshwater diving experiences. One notable site is the "Beatenbucht," ideal for shore diving, featuring steep walls and rock formations, where divers often spot trout and perch. The "Längenschachen" is popular for its underwater forest, offering a unique experience of swimming among submerged trees.

Divers can explore "Weissenau," known for its remnants of an ancient submerged village, adding a historical dimension to the dive. The lake's pristine waters allow for clear visibility, making it perfect for both novice and experienced divers. Encountering pike and eels adds to the adventure, enriching the overall diving experience in Thunersee.

Top Wildlife Sightings in Lake Thun

ake Thun, located in Switzerland, offers divers a unique glimpse into its diverse freshwater wildlife. The lake is home to a variety of fish species, including perch, roach, and whitefish, which are commonly seen on dives. Divers may also encounter special sightings such as catfish and sturgeon, particularly if exploring deeper areas where these larger fish tend to dwell. Visibility in Thunersee can vary significantly with the seasons, impacting the ease of wildlife sightings. During spring and autumn, improved visibility often coincides with the spawning activities of certain fish species, providing a dynamic underwater spectacle. Dives planned during these times are likely to yield more vibrant encounters, as increased fish activity makes for exciting exploration. The depth of the dive also influences what can be seen, with shallower areas offering easy access to common species, while deeper dives can reveal the more elusive catfish and sturgeon.

Wildlife Sightings are Based on User Generated Content

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 3

Perch

1.7k Sightings
J
71
F
48
M
70
A
27
M
100
J
124
J
147
A
521
S
279
O
173
N
100
D
77

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 5

Pike

1k Sightings
J
67
F
25
M
48
A
15
M
34
J
56
J
71
A
293
S
178
O
101
N
87
D
62

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 19

Bass

410 Sightings
J
25
F
17
M
0
A
4
M
17
J
25
J
43
A
122
S
34
O
40
N
56
D
27

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species: 600

Crayfish

166 Sightings
J
16
F
3
M
2
A
2
M
2
J
4
J
4
A
28
S
32
O
33
N
16
D
24

The best Months to dive in Lake Thun

Lake Thun, in Switzerland, offers diverse freshwater diving conditions throughout the year. In winter, water temperatures can drop to 4°C/39°F, with visibility often exceeding 10 meters/33 feet due to reduced algae growth. However, ice cover may limit access, making proper equipment essential. Spring brings rising temperatures, reaching around 10°C/50°F, but increasing runoff from melting snow can reduce visibility.

Summer months, particularly July and August, are ideal for diving, with temperatures climbing to 20°C/68°F and visibility varying between 5 and 15 meters/16 and 49 feet, depending on algal blooms. Autumn sees cooling temperatures and improved visibility once more. Divers should consider local regulations and weather forecasts for safe diving conditions, with the best months being late summer and early fall for optimal experiences.

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