A floating sauna is essentially a wood-fired sauna on a raft in the Oslo fjord. You get 60-90 minutes of very hot, very quiet time with big windows looking straight onto the water. The ritual is simple: bake until you can’t stand it, jump off the platform into the cold fjord, then climb back in and repeat. Expect temperatures around 80-90°C inside and 4-12°C water depending on season. It’s self-service during public slots so you share with strangers but everyone tends to keep to themselves. The whole thing feels refreshingly no-frills compared to fancy spas.
Best time is May to early September when the water isn’t painfully cold and you can stay outside longer between rounds. June and August usually have the most pleasant weather. Expect to pay around 250-450 NOK per person for a standard public session; private bookings cost significantly more. Bring your own towel, swimsuit, and flip-flops. Most places have basic changing areas but nothing luxurious.
Tip: book the earliest morning slot if you can — fewer people, better light, and you still have the rest of the day. Skip the add-on “wellness package” with robes and snacks unless you really want the convenience; it’s easy and cheaper to bring a thermos of coffee and a cinnamon bun yourself.
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