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Helsinki Public Sauna Guide: Best Saunas & Finnish Sauna Etiquette

Finnish Traditions

Discover the best public saunas in Helsinki and learn the essential Finnish sauna etiquette to enjoy this authentic tradition like a local.

Why Sauna Is the Heart of Authentic Finland

If you want to understand the Finnish soul, you have to step into a sauna. In Finland, the sauna is not a luxury spa treatment — it is an everyday ritual, a place for physical cleansing, and a cornerstone of Finnish Traditions.

Many international visitors feel a bit nervous about visiting a public sauna Helsinki has to offer, mostly due to the rules around nakedness. Do not worry! This guide covers the essential Finnish sauna etiquette to ease your mind, followed by our top picks for the best saunas Helsinki offers for travelers.

Finnish Sauna Etiquette (How to Sauna Like a Local)

1. Swimsuit or Naked?

This is the most common question! The rule is actually very simple:

• Gender-segregated saunas: If the sauna has separate sides for men and women (like Kotiharjun Sauna), the tradition is to go completely naked. You can sit on a small towel (pefletti) for hygiene.
• Mixed-gender saunas: If men and women share the same sauna room (like at Löyly or Sompasauna), you are generally required or expected to wear a swimsuit.

2. Understanding Löyly

Löyly (pronounced roughly like “low-loo”) is the steam created when water is thrown onto the hot sauna rocks. It creates a sudden, intense wave of heat. Anyone sitting near the bucket can throw water, but it is polite to ask the others in the room first: “Lisää löylyä?” (More steam?).

3. The Birch Whisk (Vihta/Vasta)

You might see locals gently hitting themselves with a bunch of leafy birch branches. This is called a vihta (or vasta). It might look strange, but it is actually a massage technique that boosts blood circulation and releases a beautiful, natural forest aroma into the air. If offered, give it a try!

4. Listen to Your Body

There is no hourglass or time limit in a Finnish sauna. The goal is not to see who can endure the heat the longest. Stay as long as it feels good, step out to cool down, drink plenty of water (or a traditional Finnish Long Drink), and go back in.

The Best Public Saunas in Helsinki

Whether you want raw authenticity, historic charm, or modern architecture, here are the top places to experience a true public sauna in Helsinki.

1. Löyly (Hernesaari)

The Vibe: Modern, stylish, and welcoming for beginners. It is a striking wooden building sitting right on the open sea cliffs.

Address: Hernesaarenranta 4, 00150 Helsinki

Etiquette: Mixed-gender, so swimsuits are mandatory.

The Experience: Löyly features traditional wood-fired saunas and a smoke sauna. Between sessions, you can cool off by jumping directly into the Baltic Sea — even in winter! Afterward, enjoy a meal on the massive sun terrace.

Tip: Combine this with our Helsinki Seaside Walks & Coastal Cafes guide.

2. Kotiharjun Sauna (Kallio)

The Vibe: Deeply traditional and authentic. Operating since 1928, it is the last remaining public wood-fired sauna block in Helsinki.

Address: Harjutorinkatu 1, 00500 Helsinki

Etiquette: Gender-segregated, so nakedness is the norm (towels are okay if you feel shy). No swimsuits allowed inside the hot rooms.

The Experience: You will find an authentic neighborhood atmosphere here. It is common to see locals sitting outside on the street wrapped in their towels, enjoying a cold drink and cooling down before their next round.

3. Sompasauna

The Vibe: Underground, bohemian, and community-run. Sompasauna has been built and rebuilt by volunteers.

Address: Sompasaari (follow the smoke and the sound of laughter)

Etiquette: Completely mixed, free, and open 24/7. Swimsuits are optional, and you will see a mix of both.

The Experience: There are no staff, no lockers, and no showers — just wooden shacks, a fire, and the sea. If you want to experience pure wilderness in an urban setting, this is the most unique, raw sauna experience in Helsinki.

Website: sompasauna.fi

Explore More of Helsinki

Ready to explore more of Helsinki after cooling down?

• Perfect 6 Hours in Helsinki — a compact itinerary for cruise visitors
• Helsinki Lunch Culture & Buffet Guide — where to eat like a local before or after your sauna
• Helsinki Seaside Walks & Coastal Cafes — combine sauna with a shoreline walk

This guide is updated regularly. Opening hours and seasonal availability may change — check sauna websites or social media before visiting.