Could the Sauna Cure Britain's Loneliness Crisis?

There is a peculiar intimacy that comes from sitting in a small, very hot wooden room with a group of strangers. You are sweating. They are sweating. Nobody is looking at their phone. Within minutes, the conversation starts — slowly at first, then easily, with the kind of candour that usually takes months of friendship to arrive at. This, it turns out, is not an accident. It is exactly what Britain has been craving.

Across the country, something remarkable is happening. Public saunas are appearing on beaches, at the edges of urban docks, in converted railway arches and on the shores of Welsh lakes. They are being visited not primarily by athletes or wellness devotees, but by people who are lonely, burnt out, and desperate for something that feels real.

From 45 to 600: The Numbers Behind the Boom

The scale of growth is striking. According to the British Sauna Society, the UK had approximately 45 public saunas in early 2023. By early 2025 that figure had risen to 147 — and by 2026, the Society’s own UK Sauna Map now lists over 600 public sites. That is more than a tenfold increase in under three years, at a pace that has surprised even those at the centre of the movement. What began as a niche interest imported from Finland and Lithuania has evolved into something distinctly, stubbornly British.

The question worth asking is not simply why people want saunas — the health evidence is well established — but why they want them now, and why they want them together.

The Loneliness Problem Nobody Wants to Talk About

Britain is, by most measures, one of the lonelier nations in the developed world. A government-commissioned review found that over nine million adults in the UK reported feeling lonely often or always — a figure that has barely shifted since the pandemic. More troubling still, research cited by the British Sauna Society draws on analysis showing that poor social relationships carry a health risk comparable to smoking fifteen cigarettes a day. Loneliness is not a social inconvenience. It is a public health emergency.

Into this gap, the sauna has arrived with unexpectedly good timing. New research published in Social Science and Medicine — the first experimental study into British sauna culture specifically — found that shared sauna rituals significantly boosted social connectedness, belonging, and emotional synchrony among participants. Conducted by Dr Martha Newson of the University of Greenwich and Rachael McGrath of the London Interdisciplinary School, the study found that the benefits were felt most strongly by those from lower socioeconomic backgrounds and minority groups — precisely the communities most at risk from chronic loneliness.

Why the Sauna Does Something the Pub No Longer Can

For decades, the pub served as Britain’s unofficial third space — that vital territory between home and work where people could meet without agenda. That role has been eroding. Pub closures have accelerated sharply since 2020, and even those that remain face a generation increasingly uninterested in alcohol-centred socialising. The sauna, proponents argue, fills that void with something arguably better: a space that is inclusive, sober, affordable, and profoundly levelling.

"Once everyone is sitting there in swimsuits, the usual social hierarchies and judgments fall away," noted one analysis of the community sauna movement. "You are all slightly uncomfortable, slightly exhilarated, and sharing the same sensory experience." Community sauna operators frequently report that sessions costing as little as £9.50 attract a far wider demographic than traditional spas — people who would never describe themselves as wellness enthusiasts, but who return week after week regardless.

The Global Wellness Summit has identified the social sauna surge as one of the defining wellness trends of this era, noting that these community spaces force guests to put down their phones and engage in authentic face-to-face interaction — something increasingly difficult to find in modern daily life.

A Peculiarly British Version of an Ancient Ritual

What is striking about the UK’s sauna boom is how distinctly it differs from the tradition it ostensibly imports. Research from the University of Greenwich notes that many Continental European bathers prefer silence and introspection in public saunas. In Britain, operators report the opposite: the sauna has become a venue for conversation, community sessions, DJ nights, grief circles, poetry workshops, and yoga classes. The heat, it seems, has given the British permission to talk to one another again.

This social dimension has not gone unnoticed by public health researchers. The same Greenwich study suggests that communal sauna bathing could serve as a meaningful intervention in social prescribing — the practice by which GPs refer patients to community activities rather than medication. Several operators already offer doctor-referred sessions, and the British Sauna Society has engaged NHS commissioners about the potential role of community saunas in preventative health.

The Science of Sweating Together

The physiological explanation for why shared heat produces connection is rooted in the same mechanisms that underpin bonding in other intense shared experiences — from team sport to religious ritual. Dr Newson draws parallels with the concept of collective effervescence — Durkheim’s term for the heightened sense of unity that arises when people undergo a shared, embodied experience together. The sauna, particularly during an Aufguss ceremony where a Sauna Master waves towels to circulate superheated air across the room, creates precisely this kind of synchronised intensity.

Add to this the well-documented release of endorphins and oxytocin during heat exposure, and you have a biological basis for why people leave the sauna feeling not just relaxed, but warmly disposed towards the people they were sweating alongside. The science supports what anyone who has survived a sauna round with strangers already knows intuitively.

Who Is Going, and Why

The demographic profile of community sauna users in the UK defies easy categorisation. The Big Issue has reported that operators view their spaces as a serious answer to some of the country’s most persistent social challenges — rebuilding communities, fighting loneliness, improving mental health, and providing wellness access to those who cannot afford private gyms or therapy. The client base reflects this ambition: parents recovering from postnatal depression, people in addiction recovery, older adults who live alone, young professionals alienated by screen-heavy social lives.

Women-only community sauna sessions have grown particularly quickly. Initiatives such as Mothers Recharge at London’s Community Sauna Baths offer weekly affordable sessions to mothers seeking uninterrupted recovery time. The testimonials from such sessions echo a common thread: the sauna gives people something hard to find elsewhere — permission to stop, to be present, and to be with others without any agenda at all.

The Heat Is Only the Beginning

Britain did not invent the sauna, and it has not always taken to it easily. The association with exclusive hotel spas, the unfamiliarity with nudity norms, the sheer peculiarity of sitting in a very hot room by choice — all of these created cultural barriers that kept the practice niche for decades. What has changed is not the sauna itself, but the country’s relationship with connection, solitude, and the limits of digital social life.

If the British Sauna Society’s trajectory is any guide — growing from a small advocacy group to a nationally recognised organisation hosting championship events and engaging NHS commissioners within a few years — then the boom is far from over. The 600 public saunas on its map today may look modest by the standards of a decade from now. Britain, it appears, has found its new gathering place. It is just rather hotter than anyone expected.