Löyly: the little word at the heart of sauna

First, the spelling

It is written löyly, or loyly when the Finnish characters are unavailable. You may have seen it shortened or misspelt, but the full word is worth getting to know.

At its simplest, löyly describes the steam released when water is cast onto heated sauna stones. UNESCO also describes it in terms of spirit, reflecting its central place in Finnish sauna culture. It is both something you experience physically and a word with cultural meaning. UNESCO

More than a number on a thermometer

Picture the scene: a ladle lifts, water meets the stones, and a brief hiss breaks the quiet. That moment is part of what makes sauna feel like a ritual rather than simply a hot room.

In the Finnish Sauna Society’s bathing guide, adding water to the stones is part of the experience. The guide also reminds bathers that the resulting vapour is hot and that water should only be added when everyone sharing the sauna wants it. Finnish Sauna Society guide

Good manners are part of good löyly

Before reaching for the ladle, check with the people around you. Give everyone space to enjoy the session at their own comfort level. There is no prize for creating the most intense burst of steam.

Use water only where the heater manufacturer permits it, following the equipment instructions. Do not assume that every heater or hot surface is suitable for water.

What we love about löyly is the attention it invites: to the sound of the stones, the changing warmth and the people sharing the moment. A small word, a simple action, and a good reason to be present.

Image: “Sauna steam is called leil” by Estoniansaunas

Steam in a Tallinn smoke sauna. The related Estonian term is leil; this article explores Finnish löyly.

Required credit: “Sauna steam is called leil” by Estoniansaunas, via Wikimedia Commons, CC BY-SA 4.0. Indicate any crop or other changes; adaptations must use the same or a compatible licence.