By: Chris ⎜ Last updated
Oslo's waterfront is lined with saunas. On any given day, you'll see people in swimwear along the harbour piers at Langkaia and Sukkerbiten, stepping from hot wood-fired saunas into water that is around 4°C in winter. Then back into the sauna again.
This certainly isn't a novelty experience marketed at tourists, Norwegians do this any day of the week. The sauna boom in Oslo over the past decade has turned the harbour into something of a wellness district and swimming hole. Three major operators have sauna facilities within a few minutes' walk of each other along the Bjørvika waterfront, all close to the Opera House, MUNCH, and 5-10 minutes from Oslo Central Station.
A note of caution though. These facilities are far from luxury spas, if that´s what you´re after, check our guide to Oslo´s best hotel spas.
At a glance
| Sauna | Best for | Fjord swimming | The vibe | Book this if… |
|---|---|---|---|---|
| Groups wanting a night out | No. Cold tanks only. | Festival, social, loud on weekends | You want DJs, food, a party mood | |
| Couples, small groups | Yes, ladder off the boat | Intimate, wood-fired, personal | You want a more intimate experience | |
| Same as Langkaia | Yes, but no shower after | Same boat, different view | You're staying near Aker Brygge | |
| Budget-conscious, repeat visitors | Yes, ladders and rooftop jumps | Local, no-frills, lots of variety | You want the most saunas to choose from and the best value | |
| Same audience | Yes, diving towers | Bademaschinen's towers are the draw | You want the diving platform experience | |
Sagene Folkebad | Bad weather, non-swimmers | No. Indoor cold plunge and pool. | Historic, quiet, phone-free | You want an indoor bathhouse with a swimming pool |
The Operators
All five main sauna locations are along the waterfront between the MUNCH Museum and Aker Brygge.
Oslo Badstuforening
Oslo Badstuforening Sukkerbiten and Oslo Badstuforening Langkaia are run by a volunteer non-profit organisation that started with a single driftwood raft in 2016. Sukkerbiten is now Norway's largest floating sauna village, with around ten architect-designed saunas, each with its own character, and one even has a climbing wall you drop off into the fjord. Langkaia's centrepiece is Bademaschinen, a massive colourful retro structure with two large sauna rooms with views of the fjord and the Opera house, diving towers, changing rooms and a warm/cold water shower.
These are the cheapest saunas along the waterfront. Facilities are basic with communal, unisex changing rooms. Sukkerbiten is slightly better equipped, where the major benefit is easier toilet access. Both locations have occasional Aufguss rituals with trained sauna masters, but the rituals don't run every day, you need to time your visit to coincide with these.
At Oslo Badstuforening you can use any of the saunas that are not booked for private use during your session.
The association also runs naked sauna sessions at Sukkerbiten on Wednesdays (in the sauna called Anda) and at Sagene Folkebad on Tuesdays and Fridays. Every other session here and at the other sauna operators require swimwear.
KOK
KOK Langkaia and KOK Aker Brygge are floating sauna boats. The locations are pretty similar, but different locations and different views. Langkaia faces the Opera House, while Aker Brygge faces Akershus Fortress and the islands. Both are wood-fired. You feed the fire yourself, pour water on rocks for steam, and jump into the fjord from a ladder off the side of the boat.
You will get allocated a sauna boat which you will be using for the duration of your session, as opposed to Oslo Badstuforening where you can use any of the saunas that are open. The boats hold up to 10 people, and will feel crammed if all show up at the same time. A sauna master is on site the whole time.
The two locations aren't fully identical. Langkaia has a cold freshwater shower on the jetty. Aker Brygge has nothing, just a hose that only works above freezing. Neither of them has toilets on the pier. Aker Brygge also puts you right next to the boardwalk promenade where tourists are eating ice cream and couples are strolling. You will be watched when you climb out in your swimwear and jump in.
KOK also runs a sauna cruise where the Sauna master drives the boat through the inner Oslofjord for two hours. The sensation of being in 85°C heat while the boat rocks gently past Akershus Fortress is the most memorable version of this experience, and the most expensive. Sauna cruises are not available for shared sessions, you need to book the whole boat privately.
SALT
SALT is the biggest and loudest of the saunas. It's an art and culture project built from pyramid-shaped timber structures, and it happens to contain saunas, food trucks, bars, fire pits, and a stage for DJs. Árdna, the main sauna, seats 80 people and was named the world's best cultural sauna in 2024. It's not very hot, around 50°C, which makes it more of a social lounge than sweat lodge.
The serious heat is in Ulven, and the guided Aufguss rituals in Skroget you need to sign up for as space is limited. Sessions are a generous 2.5 hours (vs 1.5 hours at KOK and Oslo Badstuforening) with bar access and rituals included. On Friday and Saturday nights there are DJs in Árdna and the whole complex turns into a heated nightclub.
Note that you cannot swim in the fjord from SALT. The council prohibits it due to boat traffic. You cool off in cold water tanks and outdoor showers instead. If the hot-to-ice-cold fjord experience is what you came for, SALT isn't where you'll get it.
Sagene Folkebad
If the idea of standing on a frozen pier in your swimwear while tourists are photographing you sounds terrible, there's an indoor option.
Sagene Folkebad is a public bathhouse completed in 1899, at the top of Grünerløkka, recently reopened by Oslo Badstuforening after careful renovation with the city antiquarian. There are two saunas seating about 42 people in total, a cold plunge, proper changing rooms with curtains and lockable lockers, hot showers, and a 12.5-metre swimming pool available during most sessions. The building itself has original tilework, period detailing and the kind of craftsmanship you just don't get in a new construction.
Volunteer aufguss masters run sauna rituals on Tuesday afternoons and evenings, which is included in the ticket. Coffee and tea are served on weekday mornings from 06:30. There's no fjord dipping here, obviously, but the cold plunge pool serves the same purpose.
The visit here is worth combining with a walk around Grünerløkka.
The Fjord Dip
The sauna is half the experience. The other half is the water.
Winter fjord temperatures are around 3–5°C. On the coldest days the fjord freezes and the sauna masters make holes in the ice for you to swim. The instinct is to get out immediately. Fight it for about 30 seconds and the panic subsides into something closer to euphoria. Get back in the sauna, warm up completely, and go again.
Summer water is 16–20°C, which is refreshing enough but certainly not the same experience. You can stay in longer, swim around, but the contrast with the sauna heat is less dramatic.
Booking
Book in advance for all the locations. All three operators offer drop-in, but weekend afternoons and evenings regularly sell out. Showing up without a booking on a Saturday at Sukkerbiten or SALT you might get turned away. Weekday mornings are the easiest slots for drop-in or last minute bookings.
In general you don't need to book far ahead, the night before is usually sufficient.
What to Bring
Swimwear is mandatory at all the shared saunas (except the designated naked sessions at Sukkerbiten).
Two towels: one to sit on inside the sauna and one for drying off after swimming.
A water bottle you can refill on site. Note that KOK does not have faucets for you to refill so you should bring all the water you need.
Flip-flops or crocs for the pier surfaces and sauna floors.
Padlock for the lockers at Oslo Badstuforening and SALT. KOK does not have lockers, but each sauna has its designated changing room, directly outside the sauna itself, so you can keep an eye on your belongings.
No outside alcohol is permitted at SALT or in any shared saunas. KOK allows moderate amounts on private bookings only. SALT and KOK sell alcohol on site. SALT has full bars and food trucks. KOK sells water and light beer from the sauna master.
When to Go
Time of day matters for your experience. Early mornings, the 07:00–10:00 at Oslo Badstuforening or the 07:30 ritual sessions at SALT on weekdays, are the calmest, but at Oslo Badstuforening not all saunas will be open. You will share the session with a handful of regulars. Weekend evenings are the opposite, especially at SALT where the DJ sessions turn Árdna into something that has very little to do with traditional sauna culture.
Winter (November through March) is when the fjord dipping in frigid cold water is the most extreme.
Age Limits
SALT has a 20-year age limit after 3pm on Fridays and Saturdays. Oslo Badstuforening has no age limit but requires children to be accompanied by an adult. KOK welcomes families on private bookings. If you're travelling with teenagers, check the session rules for your specific time slot before booking.
