How Do You Use a Japanese Bathtub in a Home or Rental Stay?

Learn the steps for using a deep Japanese soaking tub in a rental apartment or private home, including washing first, lid use, reheating and shared bath water.

Published October 20, 2026 at 10:56 PM JST | By Tokyo Paul

Quick answer: Wash and rinse your body outside the tub first, then climb in to soak, because a Japanese tub is for warming up and relaxing, not for washing. Keep soap and shampoo out of the water, cover the tub with its lid afterward to hold in the heat, and follow your host's instructions about draining or reusing the water.

What a Japanese soaking tub is

The traditional Japanese tub, called an ofuro, is deeper and shorter than a typical Western bathtub. Reference material describes it as about 0.6 meters deep, often with square sides and usually no overflow drain, so you sit upright with water up to the shoulders. Many modern home tubs are made of molded plastic or enamel and sit inside a tiled or prefabricated bathroom with its own drain on the floor.

This design explains how the bath is used. Because the room has a floor drain, bathers wash outside the tub, usually seated on a small stool beside the tap and handheld shower. The tub itself is saved for a long, quiet soak. Visitors staying in a rental or private home may find this setup very different from a standard bathroom at home, so a few minutes of orientation helps.

Step by step: the usual routine

The common routine is simple. Undress in the changing area or entryway of the bathroom, then rinse your body with warm water. Wash with soap and shampoo while seated, and rinse thoroughly, since the guidance for Japanese baths asks bathers to rinse and wash twice if needed before stepping in. Then slowly lower yourself into the tub.

Water temperature is generally hot. General references give a range of roughly 38 to 42 degrees Celsius, though many households choose their own level. Test the water with your hand first. If it is too hot, add cold water or ask your host how to adjust the controls. Soak for a short time, step out to cool down if you feel warm, and consider a second wash if you want one.

Lids, reheating and shared water

Many Japanese tubs come with a folding or roll-up lid that sits on top of the water. The lid keeps the heat in, so the bath stays warm for the next person. Put it back on when you finish. Remove and fold it before you step in. Do not stand or sit on it.

Some tubs have an oidaki function, a recirculating system that reheats the water to a set temperature, and it can be operated from a panel on the wall. Instructions are often in Japanese, so ask your host to show you the buttons before you use it. Reference material explains that the water is not drained after each person, and that refilling takes time and a lot of water, which is one reason bathers keep soap out of the tub.

Because the tub is deep, getting in and out takes a little care. Hold the rim, lower one leg at a time and keep the floor outside the tub free of soap. Many bathrooms also have a small heater or ventilation fan, which can be switched on beforehand in cold months so the room is not a shock after the warm water.

Families, order and special cases

In many Japanese households, the bath water is shared. Reference material on etiquette notes that family members traditionally bathe in order of seniority, with guests given priority, and that parents sometimes bathe together with young children. Because the water is clean when everyone has washed beforehand, it can be shared. Water is also sometimes kept and used again for laundry.

As a guest in a private home, ask your host about the household's routine. Some families drain the tub after each person, and others keep it for the household. In a rental apartment, you are likely to have the bath to yourself, but ask about draining rules, timing and noise, since the bathroom may be next to a neighbor's. Older travelers and children should be careful of the tub's depth and slippery floor.

Mistakes visitors often make

The biggest mistake is washing in the tub, or entering without washing at all. This makes the water unsuitable for the next person. A second mistake is leaving the lid off, which cools the bath quickly, or leaving it on while you get in. Another is draining the tub when the household expects to reuse the water. Ask first if you are unsure.

Other points include leaving hair in the tub, which etiquette references ask bathers to scoop out afterward, and dropping a towel into the water. A small towel can be folded and left on the edge. Do not run the bath too hot or fall asleep while soaking; take breaks, drink water and step out if you feel unwell. This is especially important in winter when cold air outside makes the contrast strong.

Tips for rental apartments and short stays

In an apartment rental, read the house manual or messages from the host before using the bath. Look for notes about filling, draining, reheating and quiet hours, since some buildings ask residents to avoid running water late at night. If instructions are only in Japanese, a translation app or a photo sent to the host can help.

Remember to open the bathroom vent or window after a bath if allowed. Wipe down floors and leave the lid in place. Pack a light towel or use the hosts' towels, and place the bath mat on the dry side. If the unit has a washing machine, ask whether bath water may be used for laundry, because some hosts allow it and others do not.

A calm, safe soak

For visitors who prefer showers, it is fine to skip the tub; the wash area is enough. If you do soak, keep it comfortable rather than extreme. This guide shares general information, not professional advice; for health concerns, talk with a doctor or local clinic. People with heart conditions, high or low blood pressure, or who are pregnant or older should take extra care with hot water and check with a doctor if unsure.

Finish with a cool rinse if you like, dry off, and tidy the bathroom for the next user. Close the lid, hang the towel and switch on the fan. A relaxed bath is one of the most enjoyable parts of a stay in Japan, and a few simple habits keep it pleasant for you and for the household.

Frequently Asked Questions

Do guests in a Japanese rental have to wash before they soak?

Yes, it is the expected custom. Rinse and wash your whole body at the washing area before getting into the tub. This keeps the water clean for the next person and is the main rule of the Japanese bath. If you are unsure, ask the host how the household uses it.

What is the lid on a Japanese tub for?

The lid sits on the water to keep it hot and clean between baths. It slows heat loss, so the next person does not need to reheat as much. Take it off before you get in, fold it aside, and put it back after you finish.

Can visitors drain the bath after use?

That depends on the home. Some households drain the water after each person, while others keep it for family members or for laundry. In a rental, check the host's instructions. If there are no notes, ask politely before pulling the plug.

Want to go deeper? Tokyo Paul's book Japanese Culture and Customs is available on Amazon.

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More guides from Tokyo Paul: How Do I Use the Bath and Shower in a Japanese Hotel Room?, How do you use an onsen for the first time? and Baby Bath Time in Japan: Ofuro Routines From Newborn to Toddler.