German Sauna Rules: What the House Rules Actually Require

Part of The German Sauna Guide — built from venues’ published house rules, not from a personal visit.

Almost everything written in English about German saunas leads with the nudity. That is the least useful place to start, because it gets the actual rule backwards. In a German Therme you are generally naked inside the sauna cabin and expected to be covered outside it.

Therme Erding states both halves in the same paragraph of its house rules: the sauna world is a textile-free zone, and that zone “is not a naturist facility” — so once you have finished your sauna round and the cool-down that goes with it, you put on a bathrobe or wrap a towel around yourself. That applies in the restaurants too.

Get that one distinction right and most of the rest follows.

Where these rules come from

This page is built from the published house rules of German thermal baths, not from one person’s visit. The main source is Therme Erding’s Haus- und Badeordnung, the version in force since 23 February 2026 — it is among the most detailed published, and Erding is the largest thermal complex in Germany. Two other venues are quoted where their own rules add something.

We have not tested any of this in person, and this is not medical advice. House rules are venue-specific: the signage at your door overrides anything on this page. What follows is the common core, with the source named each time so you can check it yourself.

The rules that are actually written down

1. Shower before you go in — and dry off

Everyone knows about the shower. The second half is the part visitors miss: Erding’s rules require guests to clean themselves thoroughly and dry off before using the facility. Dripping wet skin cools you instead of letting you sweat, and water on the benches is exactly what the towel rule exists to prevent.

2. Your towel has to cover your whole body, including your feet

This is the rule most often stated vaguely elsewhere, and it is written precisely. In the sweat rooms, Erding requires a sitting and lying towel large enough to go under the entire body, including the feet, so that nothing touches the bench.

That is a size specification, not a suggestion. A compact travel towel that stops at your knees does not satisfy it. If you are flying in with hand luggage, check the length before you pack — see the packing checklist.

3. No swimwear in the textile-free area

In the textile-free sauna area, swimwear is out. Kurhessen Therme’s published rules put the default plainly — sauna operation is fundamentally textile-free, and any area or time where something different applies is signposted. So the pattern to look for is signage: Textil means swimwear, textilfrei means none.

Most large German Thermen also have a separate swimsuit-on thermal pool area. If the textile-free part is not for you, that section is a normal spa day and nobody minds.

4. Cover up the moment you leave the cabin and cool down

This is the flip side of rule 3, and the one that surprises people who arrived expecting a nudist resort. After the sauna and its cool-down phase you are required to put on a robe or a towel — at Erding explicitly including the food and drink areas. Mauritius Therme makes the same point in its own rules: the wellness area “is not a naturist facility.”

Practically: naked in the cabin and at the plunge pool, covered while walking around, lounging, and eating.

5. The sauna area may be adults-only

At Therme Erding, entry to the sauna world and the Vitaloase is 16 and over. That is a house rule rather than national law, and it varies — but it catches families out, because the pool side of the same building is full of children while the sauna side is closed to them.

6. No alcohol before the sauna

Erding prohibits using the saunas under the influence of alcohol outright, and reserves the right to limit service and to refuse entry to anyone who is drunk. Heat and alcohol both drop your blood pressure; the rule is a safety rule, not etiquette.

7. The Aufguss is staff-only, and you may not bring your own oils

An Aufguss is the ritual where a sauna master pours water and essential oils on the stones and moves the heat around with a towel. Erding’s rules are explicit on both points: guests may not bring or use their own Aufguss essences, and only staff may perform an Aufguss.

So do not ladle water on the stones yourself in a public German sauna. In a rented private sauna or a hotel cabin the convention differs, but in a Therme this is written down.

8. No phones, no cameras, anywhere in the textile-free zone

Not “be discreet” — banned. Erding’s rules prohibit using a smartphone, tablet or any recording device, and any photography or filming, in the textile-free area. In the swimwear area, photography that would violate someone else’s personality rights is also prohibited.

This has a practical consequence people do not plan for: you cannot use your phone to pass the time between rounds. Locals bring a book, and there are usually reading lounges built for exactly that.

9. Nothing on the heater or the stove

Erding’s rules forbid covering technical fittings — heaters, ventilation inlets, sauna stoves, guards and sensors — with objects or towels, and give the reason in brackets: fire risk. Hanging a wet towel to dry over a warm surface is a normal reflex at home and a genuine hazard here. Mauritius Therme bans hanging towels up to dry inside the cabins as well.

10. Quiet, and no reserving loungers

Erding requires quiet throughout the bathing and rest areas and specifically in the saunas and steam rooms. Separately, reserving seats or loungers with towels, bags or other items is not allowed, and staff may simply remove things left for that purpose. Draping a towel over a lounger to claim it for the afternoon is the single most reliable way to irritate everyone.

11. The smaller prohibitions that still get enforced

• No street shoes in the barefoot areas, the showers or the guest areas.
• No shaving and no dyeing your hair on site.
• No swimming or diving goggles in the pools of the textile-free areas.
• No glass, no bringing in your own food and drink, no smoking outside the marked spots.
• Public displays of affection are to be kept to a minimum and not at all in the cabins, pools and lounging areas. Sexual acts carry a ban and a police report.

12. Who should not go in at all

Erding refuses entry to anyone with a contagious or notifiable illness, with open wounds, or who is drunk or under the influence of drugs. Its sauna section adds that only healthy people should use the saunas and that you should ask a doctor first if you are unsure. If you are pregnant, on blood-pressure medication, or have a heart condition, that question is for your doctor, not a website.

What is custom rather than rule

These are not in any house rules, and nobody will stop you. They are simply what regulars do, and doing them makes you invisible in a good way.

• Sit on the upper benches for more heat, lower for less. Newcomers usually start low.
• A round is roughly 8 to 15 minutes — until it stops being pleasant, not until a clock says so.
• Cool down properly between rounds: cold shower first, then the plunge pool, then rest for as long as the round lasted. The rest is not optional if you want to feel good afterwards.
• Do not walk into a cabin in the middle of an Aufguss. The door lets the heat out and it is the one thing that will earn you a look. Wait for it to finish.
• Sit up for a moment before standing after a hot round.
• Applause after a good Aufguss is normal in some houses and not in others. Follow the room.

What actually happens if you break a rule

Worth knowing, because the published consequences are more concrete than the internet suggests. Staff exercise the house right and their instructions have to be followed. Guests who breach the house rules can be removed from the building, and Erding’s rules state that the entry fee is not refunded in that case; management can also issue a ban. Deliberate soiling carries a cleaning charge — €30 at Erding at the time of writing.

In practice, for a first-timer getting the towel or the cover-up wrong, what happens is that someone tells you. Politely, usually in German, and once.

Two things that cost money and are easy to miss

• Bathing time ends before closing time. At Erding the thermal, sauna, slide and wave-pool areas must be vacated 20 minutes before the building closes, and if you overrun your booked tariff you pay the difference.
• The wristband is expensive to lose. Erding charges a flat €45 for a lost key-and-transponder, and requires you to keep it on your body the whole visit. It is also how you pay for everything inside, so the bill lands at the exit rather than at the bar.

Frequently asked questions

Do I have to be naked in a German sauna?

In the textile-free sauna area, yes — swimwear is not permitted there. You are not naked for the whole visit: the rules require you to cover up with a robe or towel once you leave the cabin and finish cooling down. And most large Thermen have a separate swimwear-on thermal pool area where normal swimming costume rules apply.

What does textilfrei mean?

Literally “textile-free”: no swimwear in that area. It is not the same as a naturist venue, and at least two Thermen say so in their own rules. Signs saying Textil mark the areas where swimwear is worn.

Can I keep a towel wrapped around me in the sauna?

Generally yes, and many people do. The requirement is what is under you: a towel large enough for your whole body including your feet.

How many towels should I bring?

At least two — one to lie on, one that is still dry at the end — plus a robe or a third towel for walking around, since covering up outside the cabin is required. Full list on the what to bring page.

Can I take my phone in?

Not into the textile-free area. Phones, tablets and any recording device are prohibited there, along with photography and filming. Leave it in the locker.

Are German sauna rules the same everywhere?

No. The core — shower first, towel under your whole body, no swimwear in textile-free areas, cover up outside the cabin, quiet inside — repeats across venues. Age limits, mixed or single-sex days, and the details differ per house, and Austria and Switzerland have their own conventions again. Read the signs at the entrance.

Crossing into Austria on the same trip? The core is identical, but the age limit, the phone rule and whether a single-sex sauna area exists all differ — set out side by side in German vs Austrian sauna rules.

Where this fits if you are planning a trip

Sauna culture is the reason to go to some places rather than a bonus once you are there. Our destination guides cover how it fits into an actual trip: Finnish Lapland, where sauna is a daily habit rather than a treatment; Lofoten, where it follows a day on steep terrain; and Iceland, where the geothermal water works differently again.

Every German term used above — textilfrei, Aufguss, Ruhebereich, Liege- und Sitztuch — is explained where you will meet it in German sauna words and signs.

Two companion pages go deeper where this one stays broad: the step-by-step walkthrough of a first visit puts these rules in the order you will meet them, and Aufguss etiquette covers what you are expected to do when the sauna master arrives.

Two questions come up often enough to have their own pages: age limits, which are set per venue and range from no-under-4s to strictly 18-and-over, and women-only sauna days, which most German public baths run once a week.

Sources and verification

This page is assembled from documents the venues publish themselves, not from a personal visit. Everything stated above can be checked against the sources below — that is the point of the page.

• Therme Erding — Haus- und Badeordnung, in force since 23 February 2026
• Kurhessen Therme — published bathing rules
• Mauritius Therme — Nutzungsregeln

Last verified: 20 September 2026. House rules, opening arrangements and schedules change without notice, and individual venues differ from one another by design. The signage at the entrance and the venue’s own current page are the authority; this page is a starting point for planning, not a substitute for either.

Some pages on this site contain Amazon affiliate links, from which we earn a commission on qualifying purchases. This page is researched from published house rules and is not a claim of personal testing, nor medical advice.