Floating saunas in Oslo: shared sessions, private rental and how to book

💡 The Short Version: Wood-fired saunas moored along Oslo’s harbour quays are open all year, with a ladder into the Oslofjord for the cold dip. The non-profit Oslo Badstuforening runs sauna clusters at Sukkerbiten (behind the MUNCH Museum) and Langkaia (opposite the Opera House); a 90-minute shared session (fellesbadstue) costs NOK 260 for non-members and NOK 150 for members, daily from 07:00 to 22:00. KOK runs design saunas and electric sauna boats at Aker Brygge and Langkaia from NOK 320. Book online in advance. Or book a tour: a 1.5-hour scenic fjord cruisead on an electric ship from NOK 430 shows the harbour and the inner islands from the water.

⚠️ You must bring two towels, and reservations open 21 days in advance. One goes under you on the wooden benches; the other stays dry for afterwards. Friday evenings and weekend afternoons sell out first.

Overview of Oslo’s floating sauna operators

Over the past decade the old container docks have become a bathing area. Floating saunas heated by wood stoves, in the Finnish style, are moored along the central waterfront, and you cool off by swimming in the fjord (isbading, ice bathing, in winter):

• Oslo Pass concession: holders of the Oslo Pass receive a 15% discount on drop-in shared sauna sessions booked at Oslo Badstuforening reception desks.
• Session duration: standard tickets provide 90 minutes total on the raft, which includes changing in and out of swimwear.

1. Oslo Badstuforening (Sukkerbiten and Langkaia)

Oslo Badstuforening was founded in 2016 as a non-profit cooperative that built a single floating sauna from reclaimed driftwood (Måken). It now runs several clusters:

Sukkerbiten (Bjørvika)

On the southern tip of the Sukkerbiten peninsula, across the footbridge from the MUNCH Museum:

• The saunas: seven wooden sauna cabins on floating pontoons. Skarven and Havørnen take up to 12 people around Harvia wood stoves, with picture windows onto the fjord and passing ferries. Anda and Måken are four- to six-person cabins.
• Trosten (universal access): opened in 2024, with a wide wheelchair ramp straight into the hot room and lower benches. The operator describes it as Norway’s first universally designed floating sauna.
• Facilities: outdoor freshwater showers, unheated timber changing cubicles and metal ladders into the fjord.

Langkaia

Along the quay opposite the Oslo Opera House:

• Bademaschinen: a multi-tiered floating bathhouse in the style of nineteenth-century sea-bathing houses, with two hot rooms, upper sun decks and a view of the Opera House roof.
• Sauna boat: the motorised wood-fired Ulka Curie can be hired for private fjord cruises or booked for sessions at the pier.

Booking: reserve shared sessions online at oslobadstuforening.no. Bookings open 21 days ahead at 08:00. You can reschedule online up to 24 hours before; a cancellation at least 48 hours ahead gives a credit voucher valid for twelve months.

2. KOK Oslo (Aker Brygge and Langkaia)

KOK runs design-led saunas and sauna boat cruises:

• Locations: floating cabins at Aker Brygge (along Stranden, facing Akershus Fortress) and at Langkaia (near Oslo S).
• Shared sessions: called FELLESKOK, for a maximum of eight people in an insulated pine cabin with floor-to-ceiling double-glazed windows onto the water. A sauna master tends the stove and pours water over the stones (aufguss), with essential oils.
• Sauna boats: KOK’s electric-outboard sauna boat takes a private group for two hours through the inner islands with a licensed skipper, anchoring in island bays for swims between sessions. Book private charters at koknorge.no.

3. SALT Art & Music (Langkaia)

SALT fills a large stretch of the Langkaia quay opposite the Opera House. It is an arts and music venue, with timber structures modelled on northern Norwegian fiskehjell (wooden fish-drying racks):

• Árdna pyramid sauna: a triangular timber pyramid for up to 100 people, with stepped seating facing a DJ booth and stage, and a glass back wall onto the harbour.
• Skroget and private barrel saunas: smaller wood-fired cabins for private bookings or quiet mid-week sessions.
• Atmosphere: sauna bathing alongside food stalls, craft beer bars, comedy nights and live acoustic music.

The fjord dip ritual and winter safety

In winter, follow these rules:

1. Warm up first: spend 10 to 15 minutes in the hot room before a cold plunge.
2. Never dive headfirst: go down the metal ladders backwards, holding the handrails with both hands. Cold water makes you gasp, and a gasp underwater means inhaling water.
3. Keep winter dips short: from December to March the fjord is 1°C to 4°C. Stay in 20 to 30 seconds at first, and climb out as soon as you go numb.
4. Protect feet and head: spray freezes into invisible ice on the boardwalks. Wear rubber sandals or neoprene shoes between the sauna door and the ladder. Many regulars wear a woollen hat into the water.
5. Drink water: the heat dehydrates you, so drink before, during and after. Alcohol is banned in shared sessions.

What to pack and practical etiquette

• Swimwear: required in all shared sessions. Nudity is allowed only in sessions advertised as single-gender or in private charters.
• Two towels: one under you on the benches, one kept dry in the changing room.
• Padlock: bring your own for the lockers at Sukkerbiten and Langkaia.
• After heavy rain: the municipality monitors the inner fjord’s water quality daily. After torrential summer rain that overwhelms the drains, a swimming advisory may be posted for 24 hours; check the Oslo municipality website.

The saunas sit between two sights: the footbridge leads to MUNCH and the marble roof of the Oslo Opera House is opposite. For the islands, see Oslofjord cruises and island hopping; for what to wear, packing for Oslo.