From Bali to London, new science confirms what luxury hotels already knew, the sauna’s real value is as much emotional as it is physical
The idea that saunas are having a moment is, frankly, misleading. In the world of luxury hotels, they never left.
I have written about them repeatedly over the years — from Nordic-inspired spa circuits in alpine retreats to ocean-facing heat rituals in Bali and the Maldives — as part of a broader shift toward immersive, experience-led wellness.
What is new, however, is not the practice itself, but the strength of the evidence now emerging around it. A series of recent studies from UK researchers, including work connected to the University of Oxford and the University of Greenwich, has given scientific weight to something the best hotels have long understood intuitively: sauna use is associated with improved physical and mental wellbeing, and crucially, the benefits extend beyond the heat.
The data suggests that regular use, particularly weekly sessions, is linked to stronger physical outcomes, while both monthly and weekly use support mental wellbeing, with more frequent engagement delivering greater impact.
But the most compelling finding is not physiological. It is social. The research indicates that the sense of belonging, ritual and shared experience within sauna environments may be just as “medicinal” as the heat itself.
For luxury travellers who have spent years inside the world’s leading hotels, this is less a revelation than a validation. The most successful spa and wellness environments have never been purely about treatment menus or facilities; they have been about how a guest feels moving through them.
A well-designed sauna is not simply a place to sit. It is a transition space, a decompression point, a subtle social room where the pace of interaction shifts and something more human begins to unfold.
What is changing now is the way hotels are beginning to understand and programme these spaces. For much of the past decade, luxury wellness has been driven by optimisation — diagnostics, longevity protocols, biohacking, measurable outcomes.
These elements remain highly relevant, particularly at the top end of the market. But alongside them, a quieter recalibration is taking place. Guests are not only seeking improvement; they are seeking connection.
This is where sauna culture becomes particularly interesting. In destinations including Sydney, London, New York and across parts of Southeast Asia, communal sauna environments are evolving into something closer to modern social clubs. Bondi Icebergs in Sydney has had a communal sauna for years that might as well have its own instagram account – it is a VIP club for those willing to swim in the ice cold ocean pool and warm up side by side in the sauna afterwards. And whilst the sauna is a tough daggy, the A list crowd certainly is not.
But the new generation of saunas within luxury hotels are not loud or performative, but curated, atmospheric and intentionally designed. Music, scent, light and guided rituals are being layered into the experience, creating a rhythm that feels both ancient and contemporary. It is less about endurance and more about immersion.
Luxury hotels are uniquely positioned to lead this shift. Brands including Six Senses, Aman, Capella, COMO Hotels and others operating at the very top of the market have long understood the value of integrating hydrothermal experiences into a broader narrative of place, design and emotional journey.
Across their global portfolios, from Europe to Asia and the Middle East , sauna and heat-based rituals are increasingly being framed not as isolated amenities, but as part of a holistic experience that moves guests through states of restoration, reflection and renewal.
In my own experience reviewing these properties, what stands out is not the presence of a sauna, but how it is used. The difference between a functional heat room and a truly memorable experience is intention. At its best, the sauna becomes a space where the outside world drops away. Conversations slow. Time stretches. Guests linger longer than they expect. And, increasingly, they return.
The latest research reinforces why this matters. The association between sauna use and improved wellbeing is not purely a function of temperature or duration. It is linked to ritual, repetition and, importantly, shared experience. The feeling of belonging — of being part of something, however fleeting — has measurable effects on both physical and mental health. For an industry built on creating environments where people feel cared for, this is powerful.
It also aligns with a broader shift taking place across luxury travel. Experiences are becoming more layered, more emotionally intelligent, and less rigidly defined. The traditional spa, with its quiet corridors and private treatment rooms, is being complemented by spaces that invite interaction without demanding it. Guests can engage or retreat, observe or participate, all within a carefully designed environment.
This does not mean that privacy and discretion are disappearing. They remain fundamental to luxury. But alongside them, there is a growing recognition that connection — to self, to others, to place — is equally valuable. The sauna, in its simplest form, offers all three.
There is, of course, a commercial dimension. Hotels that understand how to activate these spaces effectively are seeing increased engagement, longer dwell times and stronger guest loyalty. A well-programmed sauna experience can function as both a wellness offering and a social anchor, supporting everything from spa revenue to membership models. It becomes not just a feature, but a reason to return.
Perhaps what is most striking is how seamlessly this fits into the direction luxury hospitality is already moving. The industry has been edging toward experience-led travel for some time, designing stays that feel curated rather than transactional. The sauna, with its combination of ritual, atmosphere and shared presence, sits naturally within that framework.
So while it may be tempting to frame sauna culture as a trend, that would miss the point. What we are seeing now is not the emergence of something new, but a deeper understanding of something enduring. The research simply confirms what the best hotels have long practised: that wellbeing is not only about what happens to the body, but about how we feel in a space, and who we share it with.
In an era where luxury is increasingly defined by experience rather than excess, that insight feels particularly timely.
