General diving ban and permit rules.
Tyrol's alpine lake with clear water and freshwater life.
Tyrol's alpine lake with clear water and freshwater life.
Diving is permit-controlled and is generally handled through local clubs or schools.
Achensee is a large alpine lake in Tyrol, set in a high-country basin between surrounding mountain ranges. It is known for clear water, strong visibility for a mountain lake, and an above-average mix of freshwater fish. Plan it as a shore-based, permit-controlled cold-water dive where designated access points, seasonal rules, and entry choice matter as much as the underwater scenery.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
Up to 130m
Depth Note
Maximum depth stated as 130 m.
Best Season
1 April to 30 November.
Typical Conditions
Cold mountain-lake water with shore-entry diving, good clarity on better days, and wind-driven surface chop rather than surf.
Hazards, restrictions, and access requirements.
Safety Notes
The lake reaches depths around 130 m; plan dives conservatively and stay within training and gas limits.
Access Restrictions
Valid diving permit required; diving is limited to the seasonal window and the rules that apply to clubs and schools.
Legal Notes
Achensee has had a general diving ban since 1991, and scuba diving is only allowed under specific regulations and individual permits.
Community notes to help plan your visit.
Scuba Diving
Suitable for lake diving with reported impressive visibility; depth can extend to 130 m.
Freediving
Experienced freedivers can use calmer shore areas, but the cold water and permit rules make Achensee mainly a scuba and training lake.
Snorkeling
Snorkeling is possible in calmer areas, especially in warmer months, but the lake is more useful for diving than surface-only visits.
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
General diving ban and permit rules.
Lake water quality and visibility baseline.
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