How to Use a Public Onsen in Japan in Winter: A First-Timer's Guide

Stepping into a steaming Japanese hot spring during winter is one of the most soothing rituals you can experience. If it is your first time, the etiquette surrounding public nudity, shared tubs, and Japanese bathing culture can feel daunting. Once you learn the basic workflow, you will find that these rules simply exist to keep the water pure and the atmosphere calm for everyone.

What to Expect and How Much It Costs

Natural onsen are hot springs fed by geothermal mineral water heated to around 40 to 43 degrees Celsius. Facilities range from modest local bathhouses to expansive day spas and luxury traditional inns known as ryokan.

Day-use baths generally cost between 600 and 2,000 yen per person. If you choose an overnight ryokan stay that includes multi-course dining and bath access, prices usually run from 15,000 to over 80,000 yen per person depending on the property.

Most onsen towns, such as Hakone in Kanagawa, Kusatsu in Gunma, or Beppu in Oita, are easily reached by regional limited express trains or highway buses from major hubs. Booking is generally not required for public day-use hot springs, though private reservable baths known as kashikiriburo often require advance reservation.

Entering the Facility and Changing Room

Remove your outdoor footwear immediately at the entrance and place your shoes inside the provided shoe lockers. Proceed to the front desk or automated ticket machine to pay your admission fee.

At the counter, you can rent or purchase towels if you did not bring your own. You will typically use two towels: a large bath towel for drying off at the end and a small hand towel known as a tenugui or washcloth.

Head to the changing area indicated for your gender. Curtains called noren hang over the doorways, usually displaying red for women and blue for men, alongside the kanji characters for female and male.

Once inside the changing room, strip down completely. Swimsuits, underwear, and shoes are strictly forbidden in public baths. Place all clothing, jewelry, watches, and phones inside a locker or basket. Take only your small hand towel with you through the sliding door into the washing area.

The Washing Station: Wash Before You Soak

The most critical rule of onsen bathing is that you must never enter the soaking tubs dirty. The bathwater is shared, pure mineral water meant strictly for soaking, not for cleaning.

Walk to the perimeter of the room where you will find individual washing stalls equipped with mirrors, stools, handheld showerheads, and basins. Sit down on a stool rather than standing so that you do not splash soapy water on your neighbors. Most facilities supply complimentary body wash, shampoo, and conditioner, though budget community baths may require you to bring your own.

Thoroughly scrub your entire body and wash your hair. Rinse away all traces of soap and suds before standing up. Before you walk to the tubs, rinse your stool and basin with clean water and return them to their original position.

Winter Acclimation: The Kakeyu Step

In cold winter weather, jumping straight into a 42-degree bath can shock your cardiovascular system and cause lightheadedness. Japanese bathers avoid this through kakeyu, a practice of pouring warm water over the body before getting in.

Use a washbasin to scoop water either from a dedicated kakeyu basin near the tub entrance or directly from the bath. Pour multiple scoops over your feet, legs, hands, and shoulders to gradually raise your core temperature.

Soaking and Towel Management

Step slowly into the bath without jumping, kicking, or splashing. Keep your movements gentle to preserve the calm environment.

Never let your small modesty towel touch the bathwater. While moving between the shower stall and the water, you can hold the towel in front of your body for modesty. Once you step into the bath, place the folded towel on your head, set it on a dry rock at the edge of the tub, or leave it on the tiled pool deck.

If you have long hair, tie it up with a hairband so that it stays completely clear of the water. Do not swim, dive, submerge your head, or wash your face in the tub.

Keep soaking sessions to 10 or 15 minutes at a time. In winter, an outdoor bath known as a rotenburo is especially pleasant because the crisp outdoor air prevents your head from overheating while your body stays submerged. If you begin feeling flushed or dizzy, sit carefully on the edge of the tub with your legs in the water to cool down.

Drying Off and Post-Bath Care

Before stepping back onto the changing room mats, wring out your small hand towel completely and use it to wipe the excess water off your body. Dripping water onto the changing room floor is considered poor etiquette.

Once inside the locker room, use your large towel to dry off fully. Whether you rinse off in the shower before drying is up to personal preference. Many bathers leave the mineral-rich onsen water on their skin to absorb its beneficial properties, though those with sensitive skin may prefer to rinse after soaking in highly acidic or sulfurous springs.

Hot springs draw a significant amount of moisture from your body. Rehydrate immediately by drinking cool water, tea, or milk from the lounge vending machines. Relax in the common area for 20 to 30 minutes before heading back out into the winter cold.

Tattoos and Privacy Options

Historically, Japanese hot springs restricted people with tattoos due to organized crime associations. Policies are gradually evolving, and places like Beppu feature a wide range of tattoo-friendly public baths. Some bathhouses allow tattoos if you cover them with waterproof flesh-colored patches, which are often sold at the front desk.

If you have large visible tattoos or feel self-conscious about public nudity, look for facilities offering kashikiriburo or family baths. These private rooms can be rented by the hour for individual or family use, giving you the complete natural mineral bath experience in private.

Before you go

• Check the facility website beforehand to confirm their tattoo policy and whether you need to bring your own soap and towels.
• Bring 100-yen coins, as many shoe and changing room lockers require a refundable coin deposit.
• Remove all metal jewelry before entering, because natural minerals like sulfur will quickly tarnish and discolor silver.
• Drink plenty of water before and after your bath to avoid dehydration from high water temperatures.
• Tie up long hair securely above your shoulders before entering the soaking area.
• Avoid consuming alcohol prior to bathing, as hot water intensifies the physical effects of alcohol.