The rooms
Three heats
and one cold
Every room keeps its own temperature and its own mood. Most guests move through all four in a visit. The numbers here are live.
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Langkaia 4, Bjørvika, Oslo
Open now until 23:00
Wood-fired saunasfloating on the Oslo fjord
84°
Storsalen, top benchRight now
Alder
Birch and alder fire 3 stoves
Fjord tested weekly 1 m depth
Wood from Nordmarka FSC
Open 365 days 06:30–23:00
Robes and towels included
Tram 13 4 min walk
Alder Bathhouse, on the water since 2020
Alder is a floating bathhouse in Bjørvika 
with three saunas heated by birch and alder, a ladder into the fjord 
and a kettle that stays warm in the pier house 
all day. Come for two hours and walk home slower.
wood-fired saunas on one pier
seats on the Storsalen benches
visits in 2025, our sixth winter
days a year, storms included
Three heats
83°
Storsalen
The big room · 40 seatsAufguss sessions run here all day around a wood-fired stove with 600 kg of stones. Stand at the top bench for the full heat, or sit low on your first round.
80–85°C3 bench levelsAufguss 7× a day
71°
Svart
The quiet room · 12 seatsBlack walls, a window at bench height and soft heat that builds slowly. No talking and no phones. Bookable for private groups on Sunday evenings.
68–74°CSilentPrivate from 18:00 Sun
77°
Utsikt
The view · 16 seatsA glass wall faces west over the water and the door opens straight onto the deck. Busiest at sunset, almost empty at seven in the morning.
75–80°CWest-facing glassDoor to the deck
10.6°
Fjorden
The cold · as deep as you likeClimb down the ladder into the fjord for ten seconds or a full minute. When the harbour freezes we cut a pool in the ice, and two plunge pools stay open all year.
1–19°C by season2 ladders2 plunge pools
Utsikt, the window sauna
Wipe the glass
The west wall of Utsikt is one sheet of glass over the fjord. At 77 degrees it fogs up in minutes, so guests draw on it. Go ahead.
Inside77°
Outside9°
Sunset18:09
Drag to wipe. It fogs up again.
Plan a visit
Two hours,
in degrees
A round is heat, then cold, then rest. Pick how many and how hot, and watch the temperature around you over the visit.
Rounds3
HeatUtsikt
ColdLadder
First time? Two gentle rounds with the shower. Most people add the fjord on their second visit.
77°
Utsikt, round 1minute 12 of 106
1 h 46in rounds
36 minin heat
3 minin cold
16:16done, from 14:30
Aufguss programme, Thursday 15 October
Today on
the pier
14:0000
The cold room has no walls
Down the ladder
10.6°C
Fjord water at 1 m, measured at 06:00 today. Touch it.
A first visit, minute by minute
- ArriveRobe, two towels and a locker are waiting. Shoes stay at the door.
- First heatTen minutes on the low bench in Storsalen.
- The ladderTen seconds or a minute. Breathe out slowly.
- Rest, then againTea on the deck, two more rounds, soup at 16:00.
Prices in NOK
Pick a key
from the rail
Students and seniors pay 195 for any drop-in. Gift cards are sold at the desk.
Questions
Before
you come
Can’t find it here? Write to hei@alderbad.no and someone on the pier replies the same day.
Just swimwear. Robes, towels, shampoo, a locker and drinking water come with every visit. Flip-flops are for sale at the desk if you forget yours.
From about 1° in February to 19° in late July. We measure every morning at 06:00 at one metre depth. Today it’s 10.6°.
Book the 15:00 Fjord round. A host walks a small group through three short rounds and shows you the ladder. Take it slow and leave whenever you like.
Yes, all shared saunas are mixed and swimwear stays on. Tuesday evenings from 19:00 are for women only.
Children from 12 can come with an adult before 17:00. For younger kids, book Private Svart for the family.
Cancel for free up to 24 hours before. After that you can move your booking once, to any day within a month.
Book a session
The stove
is lit
Drop-ins start every two hours from 06:30. Pick a day and a time and we hold your places for ten minutes while you pay.
- Langkaia 4, 0150 Oslo
- hei@alderbad.no
- +47 22 41 08 30