The safest thing to wear in a sauna is a clean towel, a swimsuit, or loose natural-fiber clothing. The right choice depends on where you are, who shares the room, and what the rules say.
Here is the simple rule: wear as little as the setting allows, keep it clean, sit on a towel, and avoid anything tight, sweaty, heavy, metal, plastic-heavy, or rude to the people around you.
This question comes up all the time because first-time sauna users do not want to look awkward. People ask if a towel is enough, if swimwear is expected, if gym clothes are gross, what women should wear in a coed sauna, and whether shoes or phones are allowed. Let’s break it down by setting so you can walk in with confidence.
Quick answer: what should you wear in a sauna?
- Public gym sauna: swimsuit, towel wrap, or clean loose clothing.
- Coed sauna: swimsuit or modest towel wrap unless the facility says otherwise.
- Home sauna: towel, swimsuit, loose cotton, or nothing if that is your preference.
- Infrared sauna: towel, swimsuit, or light loose clothing.
- Traditional sauna: towel or minimal clothing works best because the room is hotter.
Always sit on a towel. It keeps sweat off the bench and makes the session cleaner for everyone.
Quick sauna outfit chart
| Sauna setting | What to wear | What to avoid |
|---|---|---|
| Gym sauna | Swimsuit, towel wrap, or clean loose clothing | Sweaty workout clothes, shoes on benches, phone |
| Coed sauna | Swimsuit or secure towel wrap | Anything see-through, loose in the wrong places, or against the dress code |
| Home sauna | Towel, swimsuit, loose cotton, or nothing | Metal jewelry, heavy layers, electronics |
| Infrared sauna | Towel, swimsuit, or light natural-fiber outfit | Compression gear and plastic-heavy fabrics |
| Traditional sauna | Towel, swimsuit, or very light clothing | Hoodies, sweatpants, sauna suits, metal trim |
Why sauna clothing matters
Sauna clothing affects comfort, hygiene, and safety. A sauna is hot enough that small clothing choices feel bigger than they would in a locker room or home gym.
Clothing that is tight can trap heat and sweat. Clothing that is dirty can bring odor into a shared room. Metal trim can get hot against your skin. Thick layers can make it harder to notice when your body needs a break.
The sauna type also matters. Cleveland Clinic says infrared saunas often run from 110°F to 135°F, while traditional saunas often run from 150°F to 195°F. That temperature gap changes how much clothing feels comfortable. A light outfit may feel fine in a lower-temperature infrared session, but too much clothing can feel stifling in a hotter traditional sauna.
What to wear in a gym sauna
For a gym sauna, wear a swimsuit, towel wrap, or clean loose clothing that has not just been through a workout.
The key word is clean. Do not finish a hard training session and walk straight into the sauna wearing the same sweaty shirt, shorts, sports bra, or leggings. Shower first, dry off, then put on clean swimwear or wrap in a towel.
Good gym sauna options include:
- Swim trunks
- One-piece swimsuit
- Simple two-piece swimsuit
- Clean towel wrap
- Loose cotton shorts
- Loose cotton shirt or tank top
Wear shower sandals in the locker room or wet areas if you want foot protection. Once you enter the sauna, keep sandals on the floor and never place shoes on the bench.
Some gyms have strict dress codes. Others rely on shared etiquette. If the sign says swimsuits required, wear a swimsuit. If the sauna is in a single-gender locker room, a towel wrap may be fine. When you are not sure, ask the front desk before your first session.
What to wear in a coed sauna
For a coed sauna in the US, the safest choice is a swimsuit or a secure towel wrap.
This is the setting where people feel the most unsure. A coed apartment sauna, hotel sauna, spa sauna, or gym health suite usually has a more modest dress code than a private home sauna. You are sharing space with strangers, neighbors, or other guests, so the goal is to feel covered without overheating.
Good coed sauna outfits include:
- A one-piece swimsuit
- A simple two-piece swimsuit
- Swim trunks
- A clean towel wrap that stays secure
- Loose cotton shorts and a loose cotton top
Avoid see-through fabrics, anything that slips when you sit down, and swimwear with metal rings or sharp trim. You do not need a perfect sauna outfit. You need one that follows the rules, stays put, and lets your skin handle the heat.
What to wear in a home sauna
A home sauna gives you the most freedom. You can wear a towel, swimsuit, loose cotton clothing, or nothing at all. You choose the rules because you are not guessing what strangers expect.
This is one reason many people prefer a sauna at home. Public sauna stress often has nothing to do with heat. It comes from not knowing what to wear, how long to stay, whether to talk, or whether other people are judging. At home, you can keep a dedicated towel stack, hang robes near the door, keep water outside the room, and set a routine that feels calm.
For most home sauna owners, the most comfortable setup is simple:
- One clean towel to sit on
- One towel or robe for after the session
- A hook or shelf outside the sauna
- A water bottle outside the hot room
- A laundry basket for used towels
Thinking about a home sauna? If public sauna rules make every session feel awkward, a home sauna lets you build the routine around your space, privacy, and comfort level.
What to wear in an infrared sauna
In an infrared sauna, wear a towel, swimsuit, or light loose clothing. Since infrared saunas often run at lower air temperatures than traditional saunas, some people feel more comfortable wearing a little more coverage.
That does not mean you should wear thick layers. Infrared heat still makes you sweat. Tight synthetic clothes can cling to your skin, trap heat, and feel unpleasant fast. A towel, swimsuit, or loose cotton outfit is usually better.
If your infrared sauna is at home, wear as little as you feel comfortable wearing. If it is at a spa, studio, gym, or apartment, follow the dress code.
What to wear in a traditional sauna
In a traditional sauna, lighter is usually better. Traditional saunas often run hotter than infrared saunas, so a towel wrap, swimsuit, or very light clothing will feel better than layers.
Avoid sweatpants, hoodies, heavy robes, and sauna suits inside the heat room. Save the robe for after your session, when you cool down and rehydrate.
In a very hot traditional or Finnish sauna, some people also wear a wool sauna hat. The purpose of a sauna hat is to insulate your head and hair from the intense heat, which can make a high-temperature session feel more comfortable.
If the sauna has hot stones and a water bucket, ask before adding water. A burst of steam can make the room feel much hotter for everyone inside.
What not to wear in a sauna
Sweaty workout clothes
Do not wear the same clothes you just trained in. They can bring sweat, odor, and gym-floor grime into a shared sauna. Shower first and change into something clean.
Tight synthetic clothing
Compression shirts, leggings, spandex-heavy shorts, and tight sports bras can trap heat and sweat. They may feel great during training, but sauna heat can make them sticky and uncomfortable.
Metal jewelry and watches
Take off rings, necklaces, bracelets, watches, smartwatches, and body jewelry when you can. Metal can heat up and feel uncomfortable against your skin. Swimwear with metal hardware can cause the same issue.
Shoes on the bench
Sandals are useful in locker rooms and wet areas, but they do not belong on sauna benches. Keep feet, shoes, and sandals off the sitting area unless your feet are on a towel and the room is not crowded.
Your phone
Leave your phone outside the sauna. Apple says iPhone and iPad devices are made for ambient temperatures from 32°F to 95°F. Sauna rooms are often far hotter than that, and high heat can shorten battery life.
Heavy lotions, oils, and makeup
Heavy products can run into your eyes, transfer onto benches, or bother other users. A quick shower before sauna use is cleaner and more comfortable.
What to bring to a sauna
Bring less than you think. A sauna should feel simple, not cluttered.
- Towel to sit on: this keeps sweat off the bench.
- Towel to dry off: useful after showering or cooling down.
- Water: drink before and after, and keep water nearby when allowed.
- Shower sandals: helpful in public locker rooms and wet areas.
- Dry clothes: change into them after you cool down and shower.
- Robe: helpful for a home sauna, spa, or backyard sauna setup.
For a home sauna, place these items outside the hot room. Heat and electronics do not mix, and the sauna feels better when the space stays uncluttered.
Sauna etiquette for first-time users
Most sauna etiquette is simple. Show up clean, respect the dress code, sit on a towel, and avoid making the room worse for the next person.
Here is a quick etiquette checklist:
- Shower before entering, especially after exercise.
- Sit on a towel, even if you are wearing a swimsuit.
- Keep your voice low in public saunas.
- Do not stare, film, or take photos.
- Leave your phone outside.
- Ask before adding water to sauna stones.
- Leave if you feel dizzy, nauseous, faint, or unwell.
UCLA Health recommends drinking plenty of water before, during, and after sauna use, starting with short sessions if you are new, and avoiding alcohol before or during sauna bathing.
Safety notes before your sauna session
Clothing helps you feel comfortable, but it does not replace body awareness. Heat affects people differently. Start short, cool down slowly, and listen to warning signs.
The CDC lists heat exhaustion symptoms such as headache, nausea, dizziness, weakness, thirst, heavy sweating, high body temperature, and lower urine output. If you feel faint, confused, very weak, or unwell, leave the sauna and cool down. Source: CDC.
Harvard Health says saunas appear safe for most people, but people with uncontrolled high blood pressure or heart disease should check with a doctor before sauna use. Source: Harvard Health.
This article is general education, not medical advice. If you are pregnant, take medicine that affects heat tolerance, have a heart condition, or have been told to limit heat exposure, talk with a clinician before starting sauna use.
FAQ: what to wear in a sauna
What do you wear in a sauna?
What you wear in a sauna depends on the setting. In a public, coed, or gym sauna, a clean swimsuit or a secure towel wrap is the safe choice. In a private or home sauna, a towel, loose cotton, or nothing at all works. Whatever you wear, sit on a towel and avoid tight synthetic clothing, metal jewelry, and sweaty workout gear.
What do you wear in a YMCA sauna?
YMCA and gym saunas usually expect a clean swimsuit, a secure towel wrap, or clean loose clothing, not the sweaty clothes you trained in. Many YMCA locations post a dress code, so check the sign or ask the front desk. When in doubt, a swimsuit is the safest sauna clothing for a shared gym setting.
What is the purpose of a sauna hat?
The purpose of a sauna hat is to insulate your head from the intense heat of a hot traditional or Finnish sauna. A wool or felt sauna hat keeps your head and hair cooler, which can make a high-temperature session more comfortable and help you stay in a little longer. It is optional, and it is mostly used in hot traditional saunas rather than cooler infrared ones.
Is wearing only a towel in a sauna normal?
Yes, a towel is normal in many private, home, and single-gender sauna settings. In many US coed gyms, apartments, hotels, and spas, a swimsuit is often the safer choice.
Should I wear a swimsuit in a sauna?
Wear a swimsuit when the sauna is coed, near a pool, connected to a gym health suite, or governed by a posted dress code. Choose a clean suit without metal trim.
Can I wear gym clothes in a sauna?
You can wear clean loose gym clothes if the facility allows them. Do not wear sweaty workout clothes straight from training. Shower and change first.
Do I need a towel to sit on?
Yes. Bring a towel to sit on, even if you wear a swimsuit. It protects the bench from sweat and makes the room cleaner for everyone.
Can I bring my phone into the sauna?
No. Sauna rooms are usually much hotter than the temperature range Apple gives for iPhone and iPad use. Leave your phone outside.
Should I shower before or after the sauna?
Shower before entering, especially after training or swimming. Shower after if you can, since you will sweat during the session.
What should a woman wear in a coed sauna?
A one-piece swimsuit, two-piece swimsuit, secure towel wrap, or loose cotton shorts and top can work. Pick the option that follows the rules and lets you sit and stand without adjusting your outfit the whole time.
What should men wear in a sauna?
Men can wear swim trunks, a towel wrap, loose cotton shorts, or nothing in a private or single-gender setting where that is allowed.
Related reading and next steps
If you are new to sauna use, these guides make strong next reads:
