Basics
At its core, a Finnish sauna is remarkably simple: a wooden room with a stove full of stones that you pour water over. From that water comes the steam – the löyly – that makes the sauna.
But what makes a sauna Finnish is less the construction than the practice. You decide yourself when to throw water on the stones. You stay as long as you like. You talk, stay silent, laugh, have a beer. You jump into the lake or under a cold shower to cool down, and go back in. No show, no choreography, no obligation to stay quiet.
In Finland there are around 3.3 million saunas for 5.5 million inhabitants – sauna there isn't a wellness experience but everyday life. Finnish sauna culture has been recognised by UNESCO as intangible cultural heritage since 2020.
Löyly is the Finnish word for the steam that rises when you pour water onto the hot stones of a sauna stove. It isn't simply an “Aufguss” (infusion) – it's what a Finnish sauna is really all about.
Good löyly is soft, penetrating and fills the room. Bad löyly is a thin, lashing burst that fades quickly. The difference comes mainly from the amount of stone on the stove and how hot the stones really get.
In Finnish, löyly carries an almost spiritual connotation. In Finnish tradition it's seen as the “spirit” of the sauna – reborn with every pour of water.
No.
A bundle of fresh birch twigs that you gently tap yourself with in the sauna. It smells wonderfully of birch, stimulates circulation and – once you've tried it – is hard to do without. In western Finland it's called vihta, in the east vasta. They mean the same thing.
In Finland, vihta is standard above all in summer, when fresh birch twigs are available. In Germany you'll find it almost nowhere. A sauna that offers vihta earns plus points with us.
Practical
Yes, but rarely. Most public saunas in Germany are designed as wellness facilities – with an Aufguss schedule, a sauna master and a show character. That makes business sense, but it has nothing to do with Finnish sauna culture.
There are exceptions, though. Saunas in the Finnish tradition – often run by Finns or Scandinavians, sometimes in clubs or small private facilities – do hold the standard. These exceptions are exactly what we're looking for.
Use our suggestion form – the name and town of the sauna are enough. We're glad of every tip, whether it's a genuine Finnish gem or a creative “Finnish” fake.
Our rating
Five criteria a sauna must all meet to qualify as Finnish at all. If even one of them isn't met, the sauna isn't Finnish for us – no matter how lovely it may otherwise be.
You can find the full rating standard, including core criteria and plus points, here.
A common assumption is that only a wood stove is truly Finnish. That's not quite right. In Finnish city flats and most public saunas, the electric stove is standard, simply because open fires aren't practical there. Anyone running a sauna in a Helsinki rental flat rarely has the choice.
What really counts is the quality of the löyly. A stove with enough stone mass, one that gets the stones really hot, produces good löyly – whether it runs on wood or electricity. A wood stove with too few stones is worse than a good electric kiuas.
In our rating, a wood stove earns plus points, but it isn't a knock-out criterion. What matters is what comes out in the end.
We go into a sauna, we sauna as we always do, and afterwards we check against our standard: Are the five knock-out criteria met? How about the four core criteria (löyly quality, room climate, atmosphere, social culture)? Which of the five plus points apply?
From that comes a clear classification: if at least one knock-out criterion isn't met, the sauna counts as not Finnish. If all five are met, it counts as Finnish – the star ratings in the core criteria then show how well it pulls it off.
We're not professionals. We rate as people who know and love Finnish sauna culture. That's subjective – but we keep our criteria transparent, so anyone can follow our assessment or see it differently.