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For a first visit, Löyly is the best sauna in Helsinki for the sea, Allas Sea Pool for convenience and Kotiharju for tradition. Löyly and Allas are mixed saunas where swimwear is required; Kotiharju is wood-heated, nude and separate for men and women. Expect to pay €16 to €29 for a visit.
For families, groups or anyone who prefers privacy, a private sauna works better, such as our private forest sauna with dinner outside the city.
Choosing a sauna in Helsinki comes down to four practical questions: will you wear swimwear, do you want the sea, are you happy to share the heat with strangers, and how much time does your stay allow. Answer those and the choice narrows quickly. Löyly gives you the seafront and a two-hour session, Allas Sea Pool is the easiest stop in the centre, and Kotiharju is the traditional wood-heated neighbourhood sauna where locals bathe nude.
Public saunas suit most adults on a first visit. A private sauna makes more sense for families with younger children, guests who would rather not share, and groups who want the sauna to end with dinner. This guide explains what each option is really like, what the rules are and how to fit a sauna into a short Helsinki stay.
How Public Saunas in Helsinki Work
Sauna is part of ordinary life in Finland rather than a spa treatment. UNESCO added sauna culture in Finland to its Representative List of the Intangible Cultural Heritage of Humanity in 2020 and counts 3.3 million saunas in a country of 5.5 million people. Helsinki's public sauna tradition goes back more than 200 years, and the city's tourism board lists at least 60 public saunas open today.
Most public saunas sell a timed visit, usually two hours. You shower before entering, sit on a bench cover or towel, and alternate between the heat and cooling down outside, in a pool or in the sea. Throwing water on the hot stones raises the steam, which Finns call löyly; in a shared sauna it is polite to ask before adding more.
House rules differ from one sauna to the next, especially on swimwear, so check them before you go. At Allas Sea Pool, for example, phones and cameras are not allowed inside the saunas. If you would rather not deal with tickets, rules and transport at all, our private forest sauna with a chef's dinner includes door-to-door transport from your Helsinki hotel.
Löyly: Sea, Design and a Two-Hour Session
Löyly, at Hernesaarenranta 4 on the southern waterfront, is the sauna most visitors picture when they think of Helsinki. It has a traditional smoke sauna and a wood-burning sauna, each for about 20 bathers, and both open onto an outdoor terrace and the sea. Löyly says swimming is possible all year round, depending on the weather.
The saunas and public areas are mixed, with separate changing rooms and showers for men and women. Swimwear must be worn at all times; you can rent it for €8 per two hours if you forget yours. A two-hour visit costs €29 for an adult, with towel, seat cover, shampoo and shower gel included, and each extra hour is €12.
Book ahead: Löyly recommends reserving your session, and cancellations need 24 hours' notice. The minimum age is 18, but younger guests can come with a guardian, and children under ten enter free when sharing a locker with a parent. On Wednesdays and Saturdays there is also a morning sauna from 9:00 to 11:00, available with breakfast for €49. Löyly is a restaurant as well, so a table after the sauna is booked separately.
Allas Sea Pool: The Easiest Sauna in Central Helsinki
Allas Sea Pool sits at Katajanokanlaituri 2 A, right next to Market Square and just over a kilometre from the main railway station. It is the simplest choice for a short stay, a layover with time to spare or a family, because you can walk there from most central hotels and the pools are open every day of the year.
There are five saunas. The Panorama Sauna (80°C) and the Corner Sauna (90°C, where you throw the water yourself) are mixed, with swimwear mandatory. Three small floating saunas (70°C) on the pool deck look over Market Square: one is mixed with swimwear required, and the separate men's and women's saunas make swimwear optional. Between rounds there is a warm pool at 27°C and a sea water pool, which showed 12°C when we checked in late October.
A two-hour ticket costs €19 from Monday to Thursday and on Friday until 14:00, and €24 from Friday afternoon to Sunday and on public holidays. Children aged 3 to 12 pay €11 or €14. Towels are not included and cost €8.90 to rent. The pools and saunas open at 6:30 on weekdays and 8:00 at weekends, and sauna time ends at 20:40. Advance tickets are sold online up to two weeks ahead and are worth buying for weekends, but they cannot be exchanged or cancelled.
Kotiharju: The Traditional Wood-Heated Sauna in Kallio
Kotiharju, at Harjutorinkatu 1 in Kallio, near Sörnäinen metro station, was built in 1928 and is the only remaining public wood-burning sauna in Helsinki. It is the everyday version of Finnish sauna rather than a designed experience, which is exactly why many travellers go.
Men and women bathe separately: the men's sauna is on the ground floor and a women's sauna of the same size is upstairs. Swimming trunks and underwear are not allowed, although you can cover yourself with a fresh towel. Cooling down happens outdoors in front of the building, on the street.
Kotiharju is open from Tuesday to Sunday, 14:00 to 20:00, with bathing until 21:30. Entry is €16 and a towel is €4. It is closed on Mondays, and it has announced a closure on Sunday 8 November 2026.
Swimwear, Nudity and Mixed Saunas: What to Expect
The rules are easy once you know the pattern. In Helsinki's mixed saunas, swimwear is the norm: Löyly requires it everywhere, and Allas requires it in its mixed saunas. In single-sex saunas, nudity is normal: Kotiharju does not allow swimwear at all, and the separate floating saunas at Allas leave it to you.
Nobody expects visitors to know every rule, but staff will expect you to shower first and to sit on a towel or bench cover. If anyone in your group feels unsure, choose a sauna where swimwear is required for everyone. The rule removes the question and lets everyone relax.
Sauna and a Winter Sea Dip
In winter, cooling down between rounds can mean a dip in icy sea water. At Löyly you step from the sauna onto the terrace and into the sea, with swimming possible all year depending on weather and ice. At Allas the cold option is the sea water pool, filtered and treated with UV, next to a warm pool at 27°C, which makes it the gentler place for a first cold plunge.
Keep the dip short, follow the venue's instructions and go back into the heat afterwards. Bring a warm hat and sandals for walking between the sauna and the water, and treat the sea itself as a possibility rather than a promise, because ice and weather decide on the day.
When a Private Sauna Is Worth It
A public sauna is the right call for most adult couples and friends. A private one starts to make sense in four situations: you are travelling with younger children, someone in the group would rather not share with strangers, you want to talk freely as a group, or you would like dinner straight after without changing venues.
In the city, Löyly rents a private sauna for up to ten people with its own shower room, a small terrace and sea access. It costs €500 for two hours from Monday to Thursday and €600 from Friday to Sunday, towels included, with free cancellation up to three days before. At Allas, the Corner Sauna can also be booked for private use.
Outside the city, our private forest sauna in Nuuksio National Park runs for four to six hours, from €350 per person. It includes transport from your accommodation in Helsinki, a private sauna with lake views and a seasonal three-course dinner cooked by a private chef. Swimwear is your choice. In summer, the archipelago cottage and sauna experience takes you by boat to a family-owned island for a wood-fired sauna, a sea swim and lunch. If you are unsure which suits your group, tell us your date and who is travelling and we will confirm availability and timing.
How to Fit a Sauna into a Helsinki Itinerary
Plan the sauna for the end of a day. A two-hour session, the journey there and time to dry off and eat afterwards add up to most of an evening, and the heat makes people slow and relaxed rather than ready for more sightseeing. On a four-day Helsinki itinerary, the evening after a walking day works well.
Check the calendar before you fix a day. Kotiharju is closed on Mondays, Löyly's morning sauna runs only on Wednesdays and Saturdays, and weekend slots at Löyly and Allas fill first. Over the holidays, Allas has published reduced hours on Christmas Eve (7:00 to 17:30) and opens on Christmas Day, Boxing Day, New Year's Eve and New Year's Day; our guide to Christmas in Helsinki covers what else is open.
If you have a long stopover, a sauna is realistic with ten hours or more between flights, as our guide on whether Helsinki is worth visiting on a layover explains. In winter, a sauna evening is also a good way to start a Helsinki and Lapland trip after the flight, before the colder days further north.
Planning a Sauna-Focused Trip to Finland
If sauna is a reason for the trip rather than one evening of it, our Private Finland Sauna Tour follows the tradition through very different settings over ten days: Löyly on the Helsinki seafront, a guided traditional sauna ceremony in Sipoo, a private underground smoke sauna on Kemiönsaari, a private sauna boat in the Tampere region and two nights beside Lake Saimaa. It starts from €8,900 per person, based on two guests sharing. The route was designed for private groups of 6 to 12, and we adapt it for couples.
For a single sauna evening inside a wider Helsinki stay, we can book the session, the restaurant and the transfers around your hotel and flights. Send us your dates and who is travelling and we will reply within 24 hours with options that fit.
Continue planning
- 4 Days in Helsinki: A First-Time Itinerary with Porvoo and Finnish Sauna
- Christmas in Helsinki: Markets, What's Open and How to Plan It
- Helsinki in Winter or Summer: Which Season Is Right for Your Private Trip?
- Forest Private Sauna and Dinner from Helsinki
- Private Finland Sauna Tour: Helsinki to Lake Saimaa
At a glance
- Helsinki seafront sauna and a Sipoo sauna ceremony
- Private underground smoke sauna on Kemiönsaari
- Private sauna boat cruise in the Tampere region
- Two nights at Järvisydän on Lake Saimaa
This ten-day Finland sauna tour follows the tradition through several very different settings rather than repeating the same experience each day. Helsinki provides an easy introduction, combining a guided look at the capital with seafront sauna culture before the route moves into the countryside for a more traditional ceremony in Sipoo.
The character changes again on Kemiönsaari, where the group stays overnight and has private use of a distinctive underground smoke sauna built among granite and forest. From there, the journey continues towards the Tampere region, adding a slower country-hotel base and a private sauna boat cruise on the lake. The final inland chapter is beside Lake Saimaa, with two nights at Järvisydän, time for nature and a private lakeside sauna session.
Four Helsinki nights bookend the route, while the middle of the journey uses three smaller bases to keep each sauna experience connected to its landscape rather than turning the programme into a sequence of day trips. Private airport transfers are included at the beginning and end. Intercity transport is set out in your proposal.
The route works particularly well for private groups travelling together, including friends, associations and special-interest groups. The route was designed for 6–12 participants, and an adapted version for couples can also be arranged.
