People come into our showrooms having read a great deal about saunas and still not knowing the basics. How hot should it actually be? How long do you sit in there? Do you wear anything? Is every day too much?
Fair questions, and the internet answers them badly, mostly because a lot of what is written about saunas is trying to sell you on health outcomes rather than tell you how to use one. This guide does the opposite. It is about the practical mechanics of a good session.
One thing up front: we are a sauna dealer, not a medical practice, and nothing here is health advice. If you have a heart condition, blood pressure issues, are pregnant, or are taking medication of any kind, talk to your doctor before you start using a sauna. That conversation is worth having before you buy, not after.
How hot should a sauna be?
It depends entirely on the type, and this is the piece most people miss. An infrared sauna at 140 degrees and a traditional sauna at 180 degrees are not the same experience at different intensities. They heat you differently.
| Sauna type | Typical temperature range | Humidity | How it feels |
|---|---|---|---|
| Traditional (electric or wood heater) | 150 to 195 F | Low, until you add water to the stones | Hot air surrounds you. Intense, especially on the upper bench. |
| Infrared | 110 to 140 F | Very low | Gentler air, warmth felt more directly on the skin. Longer sessions. |
| Hybrid | Either range, depending on mode | Varies | You choose which experience you want that day. |
A traditional sauna also stratifies. The air at the top bench can be 30 degrees hotter than at your feet, which is why the bench you choose matters as much as the thermostat setting. Start on the lower bench.
If you have not decided which type suits your home yet, our guide to infrared, traditional, or hybrid saunas compares them for New Jersey houses, including basements and garages.
How long should you stay in a sauna?
Shorter than most beginners expect, and that is not a warning so much as a preference. People who push through a first session usually come out feeling wrung out and do not go back for a week.
A reasonable pattern looks like this. For a traditional sauna, 10 to 15 minutes is a normal session once you are used to it, and 5 to 10 minutes is plenty for your first few. Infrared runs longer because it is cooler, commonly 20 to 30 minutes, again starting shorter.
Experienced users often do two or three shorter rounds with a cool down between them rather than one long stretch. Most people find that far more pleasant than sitting it out in one go.
The real rule is simpler than any number: get out when you stop enjoying it. Lightheadedness, a headache, nausea, or a racing heart all mean the session is over. Do not treat it as something to endure.
What to wear in a sauna
At home, whatever you like. In a private home sauna most people go without clothing, or wrap in a towel.
What matters more is what not to wear.
- Always sit on a towel. It protects the wood, and it is far more comfortable than hot bare cedar.
- Skip synthetic athletic wear. Polyester and nylon trap heat against the skin and can hold onto odor permanently.
- Take off jewelry, watches, and glasses. Metal gets hot fast.
- Leave your phone outside. Heat is bad for the battery and the screen, and most manufacturers will not honor a warranty claim on a phone cooked in a sauna.
- Go in clean and dry. A quick rinse beforehand is standard practice and makes a noticeable difference to the air in the cabin.
A first session, start to finish
Before. Drink water. Preheat the cabin, which takes roughly 30 to 45 minutes for a traditional sauna and 10 to 20 for infrared, depending on the unit and the room. Rinse off and dry. Bring a towel to sit on and one to dry off with. Do not go in on a very full stomach, and skip alcohol entirely.
During. Sit on the lower bench for your first session. Get comfortable, breathe normally through your nose, and let your shoulders drop. If you want more heat, move up a bench rather than turning the thermostat up.
Cooling down. Step out, sit somewhere cooler, and let your body settle for a few minutes. A cool shower feels excellent here. If you are doing more than one round, this is the break between them.
After. Rehydrate properly. You have lost fluid and you will feel it later if you skip this. Give yourself a bit of time before doing anything demanding.
How often should you use a sauna?
There is no single right answer, and anyone who gives you one confidently is guessing. In Finland, where home saunas are ordinary, once or twice a week is common and daily use is not unusual.
Practically speaking, most home owners settle into two to four sessions a week. Start with once or twice, see how you feel over a couple of weeks, and adjust. Consistency at a comfortable frequency beats occasional long sessions.
Again, if you have any health condition at all, this is a question for your doctor rather than for us.
Adding water to the stones
This applies to traditional saunas only. Never pour water into an infrared unit or onto anything that is not a purpose built heater with stones.
A ladle of water over the rocks produces a burst of steam that raises the perceived heat sharply. Use small amounts, roughly a ladleful at a time, and wait between pours. Plain water is fine. If you want to add a sauna scent, use a product made for the purpose and add it to the water in the ladle, never directly onto the stones.
The first time you do this it will feel much hotter than the thermometer suggests. That is normal and it passes in under a minute.
Common beginner mistakes
- Staying in too long on the first try, then not wanting to go back.
- Starting on the top bench.
- Cranking the temperature instead of moving up a bench or adding water.
- Not drinking enough water before and after.
- Drinking alcohol before or during. This is the one genuinely serious mistake on the list.
- Going in immediately after a hard workout without cooling down first.
- Sitting directly on the wood.
- Assuming the number on the scale after a session means anything. Any weight change is fluid, and it comes back as soon as you rehydrate.
Sauna and cold plunge
Alternating heat and cold is a long standing tradition and it is the reason a lot of our customers end up with both. If you are curious, our post on sauna and cold plunge routines covers how people structure it, and you can see the cold plunges we carry.
Start conservatively. Going straight from a hot sauna into cold water is a significant shock to the system, and it is another thing to raise with your doctor first if you have any cardiovascular concerns.
Using a sauna through a New Jersey winter
Winter is when a sauna earns its place, and an outdoor cabin in the cold is genuinely one of the better experiences available in a backyard. There are a few practical differences in the cold months, from longer preheat times to keeping the path to the door clear. We covered them in using an outdoor sauna through a New Jersey winter.
Try one before you buy one
Reading about sauna temperature only gets you so far. Sitting in a traditional cabin at 180 degrees and then an infrared cabin at 130 tells you within five minutes which one you actually want in your house.
Come see the cabins at Green Brook, Denville, or Toms River. You can browse the full sauna collection, check what is in stock, read through our sauna FAQ, or request pricing when you are ready.
Frequently Asked Questions
How hot should a sauna be?
Traditional saunas typically run 150 to 195 F. Infrared saunas run cooler, usually 110 to 140 F, because they warm you more directly rather than heating the air around you. Hybrid units can do either. Beginners are usually most comfortable at the lower end of whichever range applies.
How long should you stay in a sauna?
In a traditional sauna, 10 to 15 minutes is a typical session once you are accustomed to it, and 5 to 10 minutes is enough at first. Infrared sessions commonly run 20 to 30 minutes because the temperature is lower. Leave whenever you stop feeling comfortable.
What should you wear in a sauna?
In a private home sauna, most people wear a towel or nothing at all. Always sit on a towel. Avoid synthetic athletic fabrics, and take off jewelry, watches, and glasses since metal heats up quickly.
How often can you use a sauna?
Most home sauna owners settle into two to four sessions a week. Start with once or twice weekly and adjust based on how you feel. If you have any health condition, ask your doctor what frequency is appropriate for you.
Can you pour water on any sauna heater?
No. Only traditional sauna heaters designed to hold stones are made for water. Never pour water into an infrared sauna or onto a heater that is not built for it. Use a small ladleful at a time and wait between pours.
How long does a sauna take to heat up?
A traditional sauna usually takes about 30 to 45 minutes to reach temperature. Infrared saunas are ready faster, often in 10 to 20 minutes. Times vary with the unit, the room, and the outdoor temperature in the case of an outdoor cabin.
Should you shower before or after a sauna?
Both. A quick rinse beforehand is standard practice and keeps the cabin fresher. A cool shower afterward is part of the cool down and feels excellent.
