A sauna is a shared space built on an unspoken contract: everyone gets to relax, and everyone helps keep it that way. Whether it's your first visit or your fiftieth, knowing the local rules turns an awkward guessing game into a genuinely restorative session. Most of it comes down to a handful of habits – shower first, sit on a towel, keep the heat in, keep your voice down.
Key takeaways:
- Shower for at least a minute or two before entering – it's the single biggest factor in how a public sauna smells and feels (Visitsauna.com, 2025).
- Mayo Clinic Proceedings recommends 15-20 minute sessions for healthy adults, with beginners starting at 5-10 minutes (Mayo Clinic Proceedings, 2018).
- Dress codes flip entirely by country – nude is standard in Finland, swimwear is mandatory across most of Australia and the US.
- A towel under you isn't optional in most public saunas – it's the main hygiene barrier between you and the next person.
After a few months talking to customers about how they actually use their saunas, the question we get asked most isn't “how hot should it be” – it's “am I doing this wrong?” Most sauna etiquette breaks down because nobody explains the unwritten rules out loud, not because people are being rude on purpose.
why does showering before a sauna matter?
Showering before you enter is the single most important hygiene habit in a public sauna, and it's non-negotiable in Finnish sauna culture and in most Australian gyms and spas (Visitsauna.com, 2025). A 1-2 minute rinse removes sweat, deodorant, lotion and skincare residue from your skin before the heat has a chance to bake it into the air everyone else is breathing.
It's not just about smell. Clean, damp skin sweats more efficiently once you're inside, which is part of what makes the session feel better in the first place. Rinsing off also opens your pores ahead of time, so your body gets straight into producing sweat rather than spending the first five minutes “warming up” through a layer of product.
Walking in clean is the easiest favour you can do for everyone else in the room – and for yourself.
what should you wear in a public sauna?
What you wear depends entirely on where you are, and getting this wrong is the fastest way to feel out of place. In Finland, Sweden and Norway, nudity is the default and treated as completely unremarkable (Finland Naturally, 2024). In Australia, the US, and most commercial gyms and day spas, swimwear is required, full stop.
Here's the regional breakdown:
Finnish and Nordic tradition: nudity is standard practice, viewed as a natural and non-sexual part of wellness culture rather than something to think twice about.
Australian and North American standards: swimwear is required in almost every public gym, spa and wellness centre. Don't assume otherwise just because you've read about Nordic norms.
German and Austrian saunas: often sit in between – many require swimwear but keep a fairly matter-of-fact, unbothered attitude about bodies in general.
Korean and Japanese facilities: in jjimjilbangs and onsen, nudity is customary in the bathing areas, and swimwear typically isn't allowed at all (Korean Tourism Organization, 2024).
When in doubt, check the signage at the door. It's there for a reason, and ignoring it is the quickest way to get an awkward tap on the shoulder.
what should you bring to the sauna?
At minimum, bring a towel to sit on – it's mandatory in most public saunas – plus a water bottle and something to help keep your head cool. Beyond that, everyone builds their own kit over time.
If this is your first session, our beginner's guide to sauna walks through hydration timing, what to eat beforehand, and a fuller packing list. And if you're setting up at home, our complete guide to setting up a home sauna routine walks through the whole routine. The short version: two towels (one to sit on, one to dry off with), a water bottle, and swimwear if your sauna requires it.
One thing that's easy to overlook: your head is the most heat-sensitive part of your body, and it's often the reason people cut sessions short before they get the full benefit. A wool sauna hat insulates your head so the rest of you can keep absorbing heat – we cover why that matters in our guide to the benefits of a sauna hat.
why shouldn't you prop the sauna door open?
Every time the door opens, hot air escapes and the heater has to work harder to bring the room back to temperature for everyone inside – which is why quick, quiet entries and exits matter more in a sauna than almost any other shared space. A few seconds of door-holding can cost the room several degrees, especially in smaller saunas where the heater is sized for a sealed box, not a revolving door.
In our experience, this is the etiquette rule first-timers break most often, usually without realising it. If you need to step out, do it decisively – open, step through, close. Save the chat for the changeroom.
why do you need a towel in the sauna?
A towel does two jobs at once: it's a hygiene barrier between your skin and the bench, and it's a comfort layer between you and hot wood that can genuinely burn bare skin. Always sit or lie on your towel rather than directly on the bench – this is one of the most consistently enforced rules across Finnish, Australian, German and Korean sauna cultures alike.
It's a small habit, but skipping it is one of the most noticeable etiquette breaches to regular sauna-goers – right up there with not showering first.
is it okay to talk and add steam in the sauna?
Quiet conversation is generally fine, but the sauna is widely treated as a space for low-key reflection rather than a social lounge – keep voices down, and save longer chats for outside. If you're pouring water over the rocks to create steam (known as löyly in Finnish), always ask the room first: “is it okay if I add some water?”
That burst of humid heat changes the experience for everyone in the room, not just you, so a quick check-in before you reach for the ladle goes a long way. Most people will say yes – it's the asking that matters.
how much space should you give other sauna-goers?
If the sauna is empty, stretch out and use the space – nobody expects you to sit bolt upright on a bench built for six just because you're alone. As more people arrive, sit up, pull your legs in, and make room without being asked. The general rule: read the room, and adjust before someone else has to ask you to.
Avoid staring at others. A public sauna is, by design, a judgment-free zone, and most people are there to switch off, not to be looked at.
how long should you stay in a sauna?
For most healthy adults, Mayo Clinic Proceedings recommends sessions of 15-20 minutes, with first-timers starting at just 5-10 minutes and building up gradually as heat tolerance improves (Mayo Clinic Proceedings, 2018). Going longer than that doesn't add much benefit and increases the risk of dehydration.
There's also a cardiovascular angle worth knowing. A 20-year Finnish cohort study following more than 2,300 men found that sessions longer than 19 minutes were associated with a 52% lower risk of sudden cardiac death compared with shorter sessions (Laukkanen et al., JAMA Internal Medicine, 2015) – though that's a long-term population finding, not a target to chase on your first visit.
A few safety basics that apply regardless of experience level:
- People with cardiovascular conditions, uncontrolled high blood pressure, or who are pregnant should check with their doctor before regular sauna use (Mayo Clinic, 2023).
- Drink water before, during and after – dehydration is the most common reason sessions go from pleasant to unpleasant.
- If you feel dizzy, nauseous, or simply “off,” exit immediately and cool down gradually. There's no etiquette points for toughing it out.
what should you leave outside the sauna?
Phones, smart watches and any personal grooming or exercise routines all belong outside the sauna door – heat and humidity can damage electronics, and grooming or working out in a shared sauna is unhygienic and disruptive to everyone else.
Leave devices in your locker rather than a bag near the bench; the intense heat can permanently damage batteries and screens, and it's one less distraction from the point of being there in the first place. Save stretching, shaving, or anything else for the changeroom.
sauna etiquette: frequently asked questions
Do you have to shower before using a public sauna?
Yes. A 1-2 minute rinse before entering removes sweat, lotion and skincare residue, and is treated as mandatory in Finnish sauna culture and most Australian and international facilities (Visitsauna.com, 2025).
Is it rude to talk in the sauna?
Quiet, low-key conversation is generally accepted, but the sauna is considered a space for reflection rather than socialising. Save longer conversations for the changeroom or lounge area.
Can you wear a swimsuit in a Finnish sauna?
In traditional Finnish, Swedish and Norwegian saunas, nudity is the norm and swimwear isn't expected. This differs sharply from Australian and US facilities, where swimwear is typically required (Finland Naturally, 2024).
How long should a beginner stay in the sauna?
Mayo Clinic Proceedings recommends first-timers start with 5-10 minute sessions and build up to 15-20 minutes as heat tolerance increases (Mayo Clinic Proceedings, 2018).
Why do you need to sit on a towel in the sauna?
A towel acts as a hygiene barrier between your skin and the bench, and protects you from hot wood. It's one of the most universally enforced rules across sauna cultures worldwide.
enjoy your sauna
None of this is complicated once you've done it a few times – it's mostly common sense applied to a hot wooden room full of strangers. Shower first, sit on your towel, keep the door movements quick and the conversation quieter, and ask before you reach for the ladle. Get those right, and you've covered nearly everything that matters.
The cultures that have practised sauna the longest – Finland, Korea, Japan – tend to have the fewest written rules about it, because the etiquette is absorbed early and just becomes habit. For everyone else, a little explicit guidance closes that gap fast.
references
- Visitsauna.com. (2025). Should you shower before entering a sauna?
- Finland Naturally. (2024). Finnish Sauna Etiquette for International Visitors.
- Spas of America. (2025). The Ultimate Guide to Sauna Etiquette at the Spa.
- Mayo Clinic Proceedings. (2018). Cardiovascular and Other Health Benefits of Sauna Bathing: A Review of the Evidence.
- Mayo Clinic. (2023). Sauna Use: Health Benefits and Safety Considerations.
- Laukkanen, J. A., et al. (2015). Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events. JAMA Internal Medicine, 175(4), 542-548.
- Kukkonen-Harjula, K., & Kauppinen, K. (2006). Health effects and risks of sauna bathing. International Journal of Circumpolar Health, 65(3), 195-205.
- Hannuksela, M. L., & Ellahham, S. (2001). Benefits and risks of sauna bathing. American Journal of Medicine, 110(2), 118-126.
- Korean Tourism Organization. (2024). Jjimjilbang Culture and Etiquette Guide.
