German vs Austrian Sauna Rules: The Real Differences

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

If you are travelling through Germany and Austria on the same trip, the sauna rules look interchangeable. Both countries run their thermal baths textile-free, both require a towel under you, both expect you to cover up once you leave the cabin. Underneath that shared core there are four differences that actually change what you do at the door — and one of them is the single most useful thing an anxious first-timer can know.

Where these rules come from

This page compares two published rulebooks: Therme Erding’s Haus- und Badeordnung (Germany, in force since 23 February 2026) and Therme Wien’s published sauna rules and Badeordnung (Austria, page last updated 1 September 2026). We have not tested either in person. House rules are set per venue, so the signage at your door beats anything written here — but these two are among the largest thermal complexes in their countries and they are a fair read on each convention.

The four differences

	Therme Erding (Germany)	Therme Wien (Austria)
Minimum age	16 for the sauna world	14
Layout	one mixed textile-free sauna world	separate women’s, men’s and mixed sauna areas
Phones	all devices, photography and filming banned in the textile-free area	photography and filming banned, phone on silent, calls permitted in the Sauna-Bistro
Swimsuit option	textile areas exist elsewhere in the building	none in the sauna areas; the Laconien in the thermal landscape allow swimwear

1. The age limit is two years lower in Vienna

Therme Erding restricts its sauna world and Vitaloase to guests aged 16 and over. Therme Wien sets the sauna at 14 and up, and repeats it in its own FAQ: the sauna may be used from the completed 14th year of life.

This catches families out in both directions. The pool side of either building is full of children while the sauna side is not, and a fifteen-year-old who can join you in Vienna cannot in Erding.

2. Vienna lets you choose a single-sex sauna. This is the big one.

Therme Wien runs three separate sauna areas — a women’s sauna, a men’s sauna and a mixed sauna — each with its own cabins, plunge pool and outdoor space. You pick which one you walk into.

For anyone hesitating about the textile-free rule, that is the most useful fact on this page, and it is almost entirely absent from English-language writing about central European saunas. The German model at a large Therme is generally one mixed textile-free world; the Austrian model here gives you a door to choose. If the mixed room is the part you are not ready for, Vienna solves it without asking you to keep a swimsuit on.

The rest of the etiquette does not change between the three areas. Each has its own 18 °C plunge pool, and the order is the same everywhere: sauna, then shower, then the cold water.

3. Vienna has a phone exception. Erding does not.

Erding’s rules prohibit using a smartphone, tablet or any recording device anywhere in the textile-free area, along with all photography and filming. It is a blanket ban.

Therme Wien forbids photographing and filming in the sauna too, and asks you to keep your phone on silent because the sauna is a quiet zone — but it explicitly permits phone calls in one place: the Sauna-Bistro. If you are travelling with someone who genuinely cannot be unreachable for three hours, that exception is worth knowing. It does not extend to the cabins or the rest areas.

4. In Vienna there is no swimsuit fallback inside the sauna

Therme Wien states it plainly in its rules — wearing swimwear in the sauna is not permitted — and confirms in its FAQ that there is no textile sauna in the sauna areas at all. The Laconien over in the thermal landscape may be visited in swimwear, but that is a different part of the building.

German houses vary more here. Kurhessen Therme, for instance, states that sauna operation is fundamentally textile-free but that certain areas or times may have different rules, signposted on site. So in Germany it is worth reading the board; in Vienna’s sauna areas the answer is simply no.

What is the same in both countries

Everything that matters most, which is why the two feel alike once you are inside:

• No swimwear in the cabin. Both houses forbid it outright. Vienna phrases it as “covered with a towel”.
• A towel under you. Erding specifies it must be large enough for your whole body including your feet.
• Cover up outside the cabin. Erding requires a robe or towel after your round and cool-down, including in the gastronomy areas. Vienna is even more specific: visit the Sauna-Bistro only in a bathrobe.
• Quiet. Both treat the sauna and rest areas as silent zones.
• No photography. In both, pointing a camera at anything is the fastest way to be asked to leave.
• Shower first, and again before the plunge pool. Erding requires you to clean yourself thoroughly and dry off before entering; Vienna describes the sequence as sauna, shower, then the Tauchbecken.

What this means for what you pack

A bathrobe earns its place more clearly in Austria than in Germany. The bistro rule at Therme Wien is explicit, and a robe is what you will be wearing between rounds if you want to eat. In Germany a second towel does the same job. Beyond that the list is identical to the German sauna rules checklist: a towel long enough to lie on, a second dry one, flip-flops, water, and a book instead of a phone.

If you are booking a family day, check the age limit before you buy the ticket rather than at the turnstile — it is the difference that most often ruins an afternoon.

Frequently asked questions

Are Austrian saunas naked too?

In the sauna areas, yes — swimwear is not permitted and there is no textile sauna. The difference from Germany is that Therme Wien lets you choose a women-only or men-only area instead of the mixed one, and that you are expected to be covered by a robe or towel everywhere outside the cabins.

Can men and women go to the sauna together in Austria?

Yes. Therme Wien has a mixed sauna alongside the two single-sex areas. You choose which to use; nothing obliges you to take the mixed one.

What age can children go into the sauna in Austria?

At Therme Wien, from the completed 14th year of age. That is a house rule, not national law, and it differs from venue to venue — Therme Erding in Germany sets 16.

Can I take my phone into an Austrian sauna?

Photography and filming are forbidden and your phone should be on silent. Therme Wien permits calls only in the Sauna-Bistro. At Therme Erding in Germany devices are banned in the textile-free area altogether.

Do the same rules apply in Switzerland?

The broad convention is similar across the German-speaking countries, but we have not read Swiss house rules and are not going to guess. Check the venue’s own Hausordnung — they publish it, and it is usually a single page.

Read next

The full German rulebook, traced clause by clause, is in German sauna rules. The packing side is in what to bring to a German sauna or Therme. For sauna as part of a trip rather than an afternoon, our guides cover Finnish Lapland and Lofoten, where the culture is informal and almost nothing is written down.

Whichever country you end up in, the sequence inside is the same: see the step-by-step first visit guide and Aufguss etiquette.

Germany handles the mixed-sauna question with a weekly Damentag where Austria often uses permanently separate areas, and the age limits differ by venue in both countries.

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
• Therme Wien — published Saunaregeln and Badeordnung, page last modified 1 September 2026
• Kurhessen Therme — published bathing rules

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, is not a claim of personal testing, and is not medical advice.