Arima Onsen — photo: 663highland · CC BY 2.5 · Wikimedia Commons
Onsen day trips: bathing without staying the night
It is 15:20. You have walked up from the station to the inn with the old wooden front and the sign that says 日帰り入浴, and the woman at the desk crosses her forearms into an X and says something apologetic. Day bathing finished at 15:00. The guests are arriving. You have a towel in your bag and nowhere to use it.
The word, and what it covers
日帰り入浴 (higaeri nyūyoku) means "bathing and going home the same day". Plenty of Japanese people have never stayed a night at a hot spring inn and still bathe in hot springs every month, because a day visit is cheap and needs no booking. Of the 1,538 onsen towns in our records, 24 list no inn at all. In those places the day visit is the only way in, and the bath is usually a single building run by the town or a private company.
The same two words, though, are used for three quite different places, and each one has its own hours, prices and habits. Most of the trouble visitors run into comes from expecting one and walking into another.
Kind one: the inn that lets you in for a few hours
Many ryokan open their baths to non-guests in the middle of the day. The sign may say 日帰り入浴 or 立ち寄り湯 (tachiyori-yu), "drop-in bath". This is how you get into a famous inn's outdoor bath without paying for a room.
The hours are the catch. Inns clean the baths in the morning after their own guests leave, and check-in starts around 15:00, so the day window is squeezed into the gap: something like 11:00 to 15:00 is common, and some stop at 14:00. The time that matters is not the closing time but 最終受付 (saishū uketsuke), last entry, which can be 30 to 60 minutes earlier. Many inns also stop taking day visitors on busy weekends and holidays without much notice, and have a weekly closed day, 定休日 (teikyūbi). If the sign by the door says 本日の日帰り入浴は終了しました, day bathing is over for today, and no amount of polite asking changes it.
As a broad range, a drop-in bath at an inn costs somewhere from about ¥500 to ¥1,500, with the well-known ones at the upper end or beyond. Some inns sell a longer day-use plan that adds a room to rest in and a lunch; those are priced more like a meal out than a bath, several thousand yen and up, and need booking ahead.
Kind two: the town bathhouse
The oldest kind of onsen bath is the shared one the town built over its spring, called 共同浴場 (kyōdō yokujō), or, in towns built around a walk from bath to bath, 外湯 (soto-yu), "outside baths". These are the cheapest baths in Japan and often the best water in town, because they sit right on the source.
Nozawa Onsen in Nagano keeps thirteen of them, free to use, with a box for donations. The water is sulfur, recorded at 42 to 90 °C at source, and it shows: the tubs are small, the water is often much hotter than a hotel bath, and there is usually no shower, no soap and no attendant — just a changing shelf, a tub and a scoop. Local people clean them. Kinosaki Onsen in Hyōgo has seven bathhouses along a willow-lined canal; overnight guests usually get a free pass from their inn, and day visitors pay per bath or buy a day pass.
Two things to know. Some bathhouses are for residents only, signed 地元専用 (jimoto sen'yō) or 関係者以外立入禁止; do not go in. And the heat can be serious. If the water hurts, do not add cold water without asking anyone present — in some towns the regulars keep it that hot deliberately and will tell you how much to add, if at all.
Kind three: the big day spa
The third kind is a purpose-built day facility, sometimes called a 日帰り温泉施設 or, near cities, a super sento. Several baths, a restaurant, a rest room with reclining chairs — 休憩室 (kyūkeishitsu) — and long hours, often into the late evening. They cost more, commonly around ¥1,000 to ¥3,000, and they are the easiest of the three for a first visit, because everything from towels to shampoo is either provided or sold at the counter.
One of these sits at the foot of Mt Takao, about an hour west of Shinjuku by train: Keio Takaosan Onsen, which has no inn in our records at all. Its water comes up at 26.2 °C, so it is heated before you sit in it, and its pH is 9.9 — strongly alkaline, which you feel as a slippery, soapy smoothness on the skin. A morning on the mountain and an afternoon in that water is one of the simplest onsen days you can have from Tokyo.
What a day trip is actually good for: trying different water
A night at one inn gives you one inn's water. A day on foot in the right town gives you several. In our records, 145 onsen towns list three or more distinct water types, and in a town like that two bathhouses five minutes apart can be different colours and smell different.
- Naruko Onsen in Miyagi lists four types — chloride, bicarbonate, sulfate and sulfur — with water at 44 °C at source.
- Arima Onsen near Kobe lists four, from 40 to 98 °C, including an iron spring that comes out clear and turns rust-brown in the air, and a radioactive one — a Japanese category for water containing small amounts of radon, which is clear and has no taste or smell. It is the easiest day trip of this kind from Osaka.
- Beppu in Ōita lists five, and has more public bathhouses than any visitor could use in a week.
- Kusatsu Onsen in Gunma is the opposite case: one extremely strong water, pH 1.0 to 2.2, at 44.9 to 94.5 °C, pouring out at 32,300 litres a minute. Acid water like this stings any cut or scratch and smells sharp. It is the kind of bath people take in several short soaks rather than one long one.
Some towns sell a pass that covers several baths, called a 湯めぐり手形 (yumeguri tegata); Kurokawa Onsen in Kumamoto made the idea famous with a wooden one. It is usually cheaper than paying at each door, and it gives the day a route.
What to carry
A small towel, a large towel if you have room, and cash in coins and ¥1,000 notes. Town bathhouses often take cash only, and many places sell entry through a ticket machine, 券売機 (kenbaiki), that may not accept ¥10,000 notes. Lockers commonly need a ¥100 coin, which you usually get back. If you forget a towel, most staffed baths sell or rent one for a couple of hundred yen; unstaffed bathhouses do not. Bring your own soap to a town bathhouse, because there may be none.
A plastic bag for the wet towel, a bottle of water, and a hair tie. That is the whole kit.
How to pace a day
Three baths is a good day; five is a lot. Hot water at 42 °C and above tires people out faster than they expect, and the usual pattern in any bath is a few minutes in, a few minutes sitting on the edge, in again. Drink water between baths. Leave a gap after a large meal or a beer before the next one, and skip the bath entirely if you have been drinking heavily.
Start early. Town bathhouses often open at 06:00 or earlier, and the first hour is when they are quietest and the water is freshest. Do the inns' drop-in baths around midday, while their window is open, and save the big day spa for the evening, because it will still be open when everything else has closed.
Three things not to do
Do not arrive at an inn for a day bath after 14:00 and expect to get in. Check the last-entry time, and on a weekend check that day bathing is running at all.
Do not treat a town bathhouse like a spa. There may be no shower; you still rinse before you get in, using the scoop and the water from the tub — かけ湯 (kakeyu). Do not put your towel in the water, and do not wash clothes, dye hair or shave there.
Do not assume the tattoo rule is the same as the next place's. Day facilities vary more than inns do; big day spas are often the strictest and small town bathhouses sometimes the most relaxed, but neither is guaranteed. Read going to an onsen with tattoos first.
First time in any onsen? Start with how an onsen stay actually works. Looking for a town to spend the day in? Onsen near Tokyo compares travel times and water, and when to go covers what each month changes.