What to bring to a hot spring or sauna depends largely on the type of facility you visit. The essentials differ between a ryokan with towels, robes, and shampoo provided, and a traditional sento where you are expected to prepare your own items.

So the key takeaway is simple: decide what to bring based on what the facility already has. Towels and amenities may be free, rented, sold, or unavailable depending on the place, so it is better to think by facility type than to memorize a single packing list. In this article, we cover what to bring by situation, what can be borrowed or bought on site, useful extras, and the points inbound travelers often overlook.

First, check what the facility provides

Before packing, find out what the facility already offers. Towels, shampoo and body soap, robes, sauna mats, hair dryers, and lockers all vary by location. Even if all of them are “bath” facilities, a ryokan, day-use hot spring, super sento, and sento can differ a lot in what you can expect. Checking the official website before you go removes most uncertainty.

The quick table below gives a clear overview of what to bring and what you can borrow or buy on site by facility type. This is only a general trend, and the details can vary widely from place to place.

What this table shows is that the three items that most often differ are towels, indoor wear, and washing products. If you get those right for the facility, the rest is usually covered by a change of clothes and a bag.

Day-use hot springs and super sento: close to hands-free, but check first

At day-use hot springs and super sento, shampoo and body soap are often provided in the bath area, so your toiletries can stay light. Towels, however, are often rented or sold, so bringing your own is a good way to save money. A face towel and a towel for drying off are the basics, and having an extra set is reassuring if you plan to visit more than one place.

Whether indoor wear is available depends on the facility. Leisure-style super sento often offer rentals or sales. If you plan to stay for a long time, it is worth checking in advance. Whether you can borrow or buy towels and amenities is one of the main points that determines whether you can stop by empty-handed.

Ryokan: focus on overnight essentials rather than bath items

At a ryokan, towels, indoor wear such as yukata or samue, and basic amenities are often provided in the room. That means you can keep bath-related items to a minimum, and the main part of your packing shifts to overnight essentials such as regular medicine, chargers, and clothes for the next day.

That said, skin care products that suit your skin, or any specific medicine you rely on, are hard to replace even at a ryokan. Do not assume amenities will suit everyone; bring only the items you care about. Also, the same rule applies here as elsewhere: do not bring your phone or electronic devices into the bath area or changing room.

Sauna facilities: same basics, plus a few comfort upgrades

Even at a sauna-focused facility, the core packing list is basically the same as for a day-use hot spring. With a towel, hydration, and a bag for wet items, you should be fine, and then you can add items that make the experience more comfortable.

Useful extras include a sauna hat, a bottle that is easy to drink from, and a light outer layer for outdoor cooling breaks. A sauna hat helps reduce the intense heat felt on the head, making longer sessions more comfortable. It is not essential, but it can help people whose head feels too hot first. Sauna mats are sometimes provided, while some facilities strongly encourage you to bring your own, so there is no single rule. Beginners can start with the basics and add items only after they know what they need.

Sento: assume you need to bring your own washing products

A traditional sento has different expectations. Shampoo, conditioner, and body soap may not be provided, so the basic rule is to bring what you use yourself. Small bottles or travel sets keep your bag compact. A towel is also something you should bring.

Do not leave your washing products sitting around the washing area; keep them neatly in a place where they do not get in the way. In particular, avoid placing bottles on or near the edge of the bathtub, since liquid could run into the bathwater. A spa bag with a handle makes it easy to hang your items on a hook. In Tokyo sento, the bathing fee for a public bath is capped by ordinance, and adults aged 12 and over pay 550 yen as of the 2024 August revision, unchanged in 2025. The amount differs by region, but it is wise to carry a few coins for admission and vending machines. You can also see How to Enjoy a Sento and How to Bathe for more tips.

Handy extras worth bringing

These are not essential, but they can make your visit more comfortable. Choose only what you need so your bag does not get too heavy.

• Hair tie or hair clip: Useful for people with hair longer than shoulder length. In Japan, it is standard not to let your hair touch the bathwater, and tying it high at the back makes that easier. The facility may not provide one, so bringing your own is safest.
• Zip bag or waterproof pouch: Convenient for wet swimwear, towels, and small items.
• Coins: You may need them for lockers or vending machines. Some facilities still rely on cash.
• Moisturizing items: If you tend to get dry after bathing, bring lotion, emulsion, or lip balm.
• Contact lens items and eye drops: If you use them regularly, a carrying case is reassuring.

You only need to add these items if you feel they are necessary; there is no need to prepare everything from the start.

Points inbound travelers often miss

One thing visitors from overseas often overlook is that towels and amenities are not always provided. If you go empty-handed expecting a hotel-style bath, you may end up without shampoo or towels at some sento and certain day-use facilities. Another important point is that phones and cameras are generally not allowed in bath areas or changing rooms, to protect privacy in spaces where people are nude. Also, some facilities still require 100 yen coins for lockers, so preparing small change at the airport or a convenience store can save you from hassle on site.

It is also important not to overpack

A hot spring or sauna trip becomes more tiring when you carry too much. Especially for day trips, it is best to keep things to the bare minimum. Towels and toiletries can often be bought on site, and forgetting something does not ruin the whole trip. On the other hand, it is better to leave expensive accessories and items that should not get wet at home. Some minerals in hot spring water can discolor metal, so it is safer not to bring valuables you do not need for bathing.

FAQ

Do hot springs or sento have towels and shampoo?

It depends on the facility. Ryokan often provide towels and amenities in the room, while day-use hot springs and super sento often supply shampoo and body soap, with towels available for a fee. Traditional sento may not provide shampoo or body soap, so bringing your own is the basic rule.

What is the minimum I should bring to a sento?

A towel, washing products such as shampoo and body soap, and some coins for admission and vending machines are the basics. Since sento may not provide supplies, it is reassuring to bring the items you need for washing.

Do I need a sauna hat or a personal sauna mat?

No, they are not essential. A sauna hat is useful for people whose head feels hot first or who often use high-temperature saunas, and some facilities provide sauna mats. It is enough to add them after you have visited a few times and decided you need them.

Should I bring a hair tie?

If your hair is longer than shoulder length, it is a good idea to bring one. In Japan, it is standard not to let hair touch the bathwater, so people tie it up with a hair tie or clip. The facility may not have one available.

Summary

The best way to decide what to bring to a hot spring or sauna is not by memorizing a list, but by checking what the facility already provides. The three items that vary most are towels, indoor wear, and washing products. Ryokan often provide most things, day-use hot springs and super sento often charge for towels, and traditional sento usually require you to bring your own washing products. After that, you can add items like a hair tie, zip bag, coins, or a sauna hat as needed. Check the facility’s setup first and bring only the items you truly cannot do without. It is better to avoid missing the essentials than to over-prepare.

Sources

• Tokyo Metropolitan Government: Regulation of Public Bath Fees (adults 550 yen, implemented in August 2024, unchanged in 2025)
• Tokyo Bathhouse Association: Bath Fee Notice (adults 550 yen)
• Japan National Tourism Organization (JNTO): How to Best Enjoy Japan’s Onsen (small towels, amenities at washing stations, valuables storage)