The box on the beach: how Britain is becoming a sauna nation

Britain is becoming a sauna nation, slightly to its own surprise. The British Sauna Society counted 45 public saunas in the country in January 2023 and 147 by January 2025. Today its UK Sauna Map lists more than 800 — and most of that growth has come not from spas or gyms but from small operators building wood-fired cabins wherever there’s cold water and somewhere to put a stove.

You’ll know the new arrival when you see it. A timber box the size of a garden shed, up on skids or a trailer hitch above the shingle, a stovepipe out of the roof, a small crowd of damp people in wool hats standing around it drinking tea. Ten years ago it would’ve needed explaining. Now it has a queue and a booking page.

What changed: the sauna got a public life

The sauna’s been in Britain for decades, but mostly as an ornament — a warm pine cupboard off the hotel pool, entered in a dressing gown and endured for eight minutes. What it never had here is what it’s always had in Finland and the Baltics: a public life. A place you go on purpose, with other people, on a schedule, as a habit rather than a treat.

That’s the part that’s changed. The new British sauna is communal by design — booked by the session, shared with strangers, run by people who talk about löyly with the seriousness other small operators reserve for coffee. The British Sauna Society has given the scattered scene a shared culture and a sense of standards, and there’s now enough of it to fill a guidebook. Emma O’Kelly’s Wild Sauna (Wild Things Publishing, 2025) covers more than 175 outdoor saunas across Britain. Five years ago it would’ve been a pamphlet.

Why so many are on beaches

The coastal box sauna solved a problem the hotel spa never could: the cold half of the ritual. Contrast is the whole point of the practice, and Britain’s most abundant natural resource is cold water with a view. Put the cabin within fifty metres of the sea and the whole thing assembles itself — heat, a short barefoot walk over the shingle, the North Sea, and back. No plunge pool, no chiller unit, no membership.

It helps that the sea swimmers got there first. Cold-water swimming had already normalised the sight of people in bobble hats walking into a grey sea in February, so the sauna arrived as the missing half of a ritual they were already performing. The two practices share a temperament — unglamorous, weather-dependent and quietly evangelical — and on much of the coast they’ve simply merged.

Beyond the coast — and why now

It’s not only a coastal story any more. In London, Rooftop Saunas runs four hand-built aspen cabins on the roof of Netil Corner beside London Fields, with plunge barrels alongside and the East London skyline beyond. Near Stockbridge in Hampshire, The Fallen Willow and The Woodland pair wood-fired heat with swimming in the Test valley. Outside Towcester, brothers George and Josh Taylor run Suku Saunas, a wild sauna and cold plunge in a Northamptonshire field. A rooftop, a riverbank, a field — the pattern repeats wherever there’s cold water and a place to put a stove. We have no connection to any of them — they’re simply places we’ve visited and loved, and the sort the revival is made of.

As for why now: the appetite for offline, gently communal places has sharpened over the past few years into something closer to a need, and the sauna answers it almost too neatly — a small hot room where a phone would die and conversation is optional. The first experimental research into British sauna culture — a 2026 study in Social Science & Medicine by Newson and McGrath — points the same way: shared sauna rituals were associated with a stronger sense of belonging and better reported wellbeing. The British version has none of central Europe’s marble. It’s plywood and reclaimed windows, and better for it.

How to try it

If you’ve been waiting for a way in, this is a good moment. Find a public session within reach — coastal or otherwise — and book it. You don’t need more preparation than a towel and an open mind. We’ve written a short guide to the headwear you’ll see on the benches. The wool hat has come along on this revival for the same reason it survived every Baltic winter — it lets you stay in the room long enough to see the point.

More than 800 public saunas would’ve sounded far-fetched five years ago, and this is still a young culture — new stoves, new regulars, a booking page and a weather app. But the cabins keep arriving, and the queues keep forming. It has the look of something that’s staying.