The useful sauna accessories are the ones that solve a problem you meet in the first week: knowing the temperature, having somewhere dry to sit, and getting power to the unit safely. Most of what gets sold alongside portable saunas is optional in a way the listings do not admit, and a year into owning one my own kit is a thermometer and a towel. That is worth saying up front, because the honest version of this list is shorter than the category suggests. Our note on how long these units take to heat up covers the wait that a thermometer helps you stop guessing at.
Quick Verdict
Buy a thermometer and a towel you do not mind getting soaked. If your sauna lives outdoors, an outdoor-rated extension cord is the third thing and arguably the most important. Everything after that is comfort rather than function.
Key Points
- A thermometer turns guessing into knowing, for very little money.
- A quick-dry towel beats a bath towel in a wet enclosure.
- Outdoor units need a cord rated for outdoor use, not a household one.
- A seat cushion matters more than it sounds on a plastic chair.
- Your phone is a perfectly good timer.
How We Picked
Accessories are ranked by whether they solve a problem that actually comes up, rather than by how well they round out a set. Anything that duplicates something most households already own is called out as such rather than padded into a recommendation.
The thermometer and the towel are mine, used with a one-person steam tent. Everything after that is judged on what the accessory is actually for and what product listings state about it.
1. A Sauna Thermometer, Best Overall
Why It Stands Out
Without one you are guessing, and the guess is usually wrong in both directions. A thermometer tells you when the unit has actually reached temperature rather than when it feels like it has, which is the difference between a session that does something and one that ends early.
It also tells you when a unit is underperforming. A tent that used to reach temperature in a given time and now does not is showing you a problem before it becomes a failure, which is the kind of early warning our cold therapy equipment notes make the same argument for.
Worth Knowing
Placement changes the reading substantially. Near the steam inlet it reads high, near the floor it reads low, and somewhere around torso height gives you the number that matters. Mine is the accessory I would replace first if it broke.
This suits every portable sauna owner. Skip it only if your unit has a reliable built-in readout.
Check Price on Amazon2. A Quick-Dry Towel, Best Essential
Why It Stands Out
A regular bath towel in a steam enclosure soaks through and then sits wet in a laundry basket. Quick-dry microfiber handles the same job, dries between sessions, and takes up a fraction of the space.
It also doubles as something to sit on, wipe the interior with, and put under your feet, which in practice is what a sauna towel spends most of its time doing.
Worth Knowing
Microfiber holds odor if it is left damp, so it needs hanging rather than folding. That is the same routine the sauna itself needs, so it is not extra work.
Mine is an ordinary towel doing this job and it works, which is worth knowing before you buy a dedicated one. This suits anyone using a steam unit. Skip it if your sauna is infrared and stays dry.
Check Price on Amazon3. An Outdoor-Rated Extension Cord, Best Safety Buy
Why It Stands Out
If the sauna is outside, this is the accessory that matters most and it is rarely mentioned. Outdoor cords are built with heavier insulation and weather-resistant jackets, and they are rated for the amperage a heating element pulls.
Portable saunas fail at the electrics far more often than at the fabric, and a cord that is undersized or exposed to moisture is a contributor to that rather than a bystander.
Worth Knowing
Check the amperage rating against your unit rather than buying on length alone. Keep connection points off the ground and out of anywhere water pools. Our guide to outdoor sauna placement covers the wider setup.
This suits any outdoor installation. Skip it if the unit plugs directly into a wall indoors.
Check Price on Amazon4. A Seat Cushion or Foot Mat, Best Comfort Upgrade
Why It Stands Out
The chair included with most portable saunas is a basic folding stool, and twenty to thirty minutes on one is longer than it sounds. A cushion changes the session from something you endure to something you sit through comfortably.
A foot mat solves the other half. Bare feet on a tent floor with condensation underneath is the detail nobody mentions before you own one.
Worth Knowing
Anything you put inside a steam unit needs to dry out afterward, so closed-cell foam beats absorbent padding. A cushion that holds water becomes the smell problem.
This suits longer sessions. Skip it if your sessions are short or your chair is already comfortable.
Check Price on Amazon5. An Insulated Water Bottle, Best for Hydration
Why It Stands Out
Hydration is the practical limit on session length, and having water within reach makes it something you do rather than something you meant to do. An insulated bottle keeps it cold next to a unit that is actively heating the air around it.
A bottle with a straw is easier to use through an arm opening than one you have to tip back, which matters if your tent has ports.
Worth Knowing
This is a household item rather than a sauna item, and if you already own one there is nothing to buy. It earns its place on the list because it is the accessory most connected to using the sauna safely.
This suits everyone. Skip it if you already have a bottle you like.
Check Price on Amazon6. An Interior Cleaning Kit, Best for Upkeep
Why It Stands Out
Steam units need wiping and drying after use, and that is the part of ownership most people like least. A soft brush and a non-abrasive cleaner suited to coated fabric make the routine quick enough that it actually happens.
The alternative is a tent that develops a smell, and once that starts it is difficult to reverse.
Worth Knowing
Harsh cleaners can degrade the interior coating on tent-style units, so mild is the right choice rather than strong. Airing the unit open is doing most of the work regardless of what you wipe with.
This suits steam units used several times a week. Skip it for infrared, which stays dry.
Check Price on AmazonSauna Accessories at a Glance
| Accessory | Problem it solves | Necessary | Skip if |
|---|---|---|---|
| Thermometer | Knowing when it is ready | Yes | Unit has a reliable readout |
| Quick-dry towel | Wet towels between sessions | Close to it | You have towels you can spare |
| Outdoor extension cord | Safe power outdoors | Yes, if outside | The unit plugs into a wall |
| Seat cushion or foot mat | Comfort on a folding chair | No | Sessions are short |
| Insulated water bottle | Hydration within reach | Functionally yes | You already own one |
| Cleaning kit | Keeping a steam unit fresh | No | Your unit is infrared |
What to Look For in Sauna Accessories
Will it survive being wet?
Anything going inside a steam unit gets damp and stays damp until you dry it. Materials that hold water are the ones that cause problems later, so closed-cell and quick-dry beat plush and absorbent every time.
Do you already own it?
Towels, water bottles, and timers are things most households have. The sauna-branded versions are rarely better, and the money is more usefully spent on the cord or the thermometer.
Does it fit your heat type?
Steam and infrared units have different needs. Cleaning supplies and quick-dry materials matter for steam; infrared owners can skip most of that entirely.
Is it rated for the load?
This applies to the cord specifically. A heating element draws real current, and a light-duty indoor cord run outdoors is the setup that causes failures.
What You Do Not Need
A dedicated sauna timer
Your phone does this. I time my sessions on mine and have never wanted a sand timer or a wall unit, and this is the accessory I would tell people to skip first. If the session is part of an evening routine, our guide to winding down before bed covers where it fits.
Aromatherapy kits for steam units
Oils in a steam generator can leave residue in the pot and the hose, and the pot is a component you want working. If you want scent, keep it outside the unit.
Sauna hats and specialty robes
These belong to traditional high-temperature saunas where head protection is a real concern. Portable units do not reach those temperatures, so the problem they solve does not arise.
Replacement rocks or stones
Portable steam units generate steam from a pot of water rather than by pouring water over heated stones. Stones sold for traditional saunas have nothing to do here.
Recommended Reading
See our notes on how long a session should run, a look at whether saunas help with sleep, our guide to portable sauna safety, and picks for recovery tools at bedtime.
Sauna Accessories FAQ
What accessories do you actually need for a portable sauna?
A thermometer, a towel, and if the unit is outdoors, a cord rated for outdoor use. That is the functional list. Everything else improves comfort rather than making the sauna work, which is worth knowing before buying a bundle.
Where should the thermometer go?
Around torso height, away from the steam inlet. Close to the inlet it reads higher than the air you are actually sitting in, and near the floor it reads lower. Consistent placement matters more than the exact spot, since what you want is a number you can compare between sessions.
Do I need a special extension cord?
If the sauna is outdoors, yes. Outdoor-rated cords have heavier insulation and weather-resistant jackets, and they need an amperage rating that matches the unit. Portable saunas fail at the electrics more often than anywhere else, so this is not a corner worth cutting.
Can I use essential oils in a portable sauna?
Not in the generator pot. Oils leave residue in the pot and the steam hose, and those are the parts that keep the unit working. If you want scent, use it in the room or on a cloth outside the enclosure.
What should I sit on?
The chair that came with the unit, ideally with a closed-cell cushion on it. Avoid absorbent padding, which soaks up condensation and holds it. A foot mat is worth adding if the tent floor collects water.
How do I clean a portable sauna?
Wipe the interior with a mild cleaner and a soft cloth, then leave it open to air out fully before packing or zipping it shut. Airing does most of the work. Harsh cleaners can damage coated tent fabric, so mild is the right choice.
Do I need a sauna timer?
No. A phone timer does the same job and you already have one. Dedicated timers are the clearest example of an accessory that exists because the category expects one rather than because it solves anything.
Should I keep water inside the sauna with me?
Yes. Hydration is the practical limit on how long a session can run, and having water in reach makes a difference. An insulated bottle keeps it cold, and a straw lid is easier to use in a confined space.
