What to Wear at Kawayu Onsen's Sennin-buro: Plan Around Changing In and Out | Swimsuits, Cover-ups, and Footwear Before and After the Bath

In winter, the Sennin-buro—a huge open-air bath that appears on the banks of the Otonashi River (Oto River) at Kawayu Onsen—draws plenty of attention. Once you decide to go, the question of what to wear naturally comes up. The short answer: rather than focusing on what you wear while soaking, think about the "flow of changing in and out" before and after the bath.

First, decide: are you bathing or just watching?

The Sennin-buro at Kawayu Onsen is an open bath set on the riverbank, exposed to the surrounding scenery. For this reason, it's generally expected that bathers wear a swimsuit or similar attire. That said, the operating period, bathing rules, and changing facilities may vary from year to year. Be sure to check the official information before you go.

For bathers: prioritize "easy to change"

Wear your swimsuit under your clothes

Changing on a winter riverbank with a wet body is harder than you might think. Wearing your swimsuit under your clothes before you arrive will cut down on changing time. Still, confirm the location and setup of changing facilities in advance so you aren't caught off guard.

Choose a cover-up that's long and roomy

The moment you step out of the water, the river breeze will chill you. A long coat that covers below the knees, a bathrobe-style wrap, or a large towel will be a lifesaver. Something you can throw on quickly, with few buttons or zippers, works best.

Footwear should be non-slip and easy to slip off

The riverbank is covered in stones and gravel, and your feet will get wet. Non-slip shoes that are easy to put on and take off are the safest choice. A small towel for drying your feet and a spare pair of socks will also keep you comfortable.

For non-bathers: warmth is the top priority

Even if you're just watching, the riverside carries the chill and wind of the mountains.

• A light but warm jacket, such as a thin down coat
• A scarf or neck warmer to protect your throat
• Gloves and thick-soled shoes that keep the cold out

Watching the steam rise from the bath can take longer than expected. If you plan to take photos, gloves that work with touchscreens are especially handy.

Small preparations to prevent chills after the bath

• A waterproof bag for your wet swimsuit
• A change of underwear and a dry base layer
• A thermos with a hot drink
• A towel large enough to dry your hair thoroughly

A wet head or neck will cool your body down fast. Carrying a hat or knit cap makes a real difference.

A fitting way to end your Kawayu Onsen visit

With the right outfit, you can take your time enjoying the winter riverbank scenery. After your bath, a leisurely stroll through the onsen town, bundled up warmly, makes for a perfect finish.

*※For the latest information on operating dates, bathing conditions, and changing facilities, please always check the official announcements.*

Image: 川湯温泉　仙人風呂 (via (公社)和歌山県観光連盟)