Onsens can be intimidating—trust us, we know. You’ve probably heard of all kinds: tattoo-friendly onsens, mixed onsens, even onsens with monkeys or capybaras lounging around.
If you’re feeling a little overwhelmed, you’re not alone — which is exactly why we’ve put together this crash course on the basics. Heading to Japan and thinking of giving an onsen a try for the first time? You’re in the right place!
What is an onsen?
Onsen means hot spring in Japanese. This isn’t your ordinary hot spring. An onsen is more than a natural wonder, it is deep rooted in Japanese culture. An onsen is not simply a tub of hot water, to be characterized as one, it’s required to have a certain temperature and amount of minerals that are naturally present.
Onsen Benefits
Sure, slipping into a steaming onsen can alleviate stress and melt away your worries. But beyond the serene vibes, these mineral-rich hot springs are packed with therapeutic and even medicinal perks. So what are the actual health benefits of soaking in one?
Let’s zoom in on five of them:
Increased blood circulation
Onsen water, enriched with up to 19 different minerals like calcium and sodium bicarbonate, is absorbed through the skin during bathing. This enhances blood flow and oxygen distribution throughout the body.
These natural elements help relax the muscles and may even contribute to lowering blood pressure. The benefits of onsen bathing go beyond simple relaxation — it’s a full-body wellness experience.
Detoxification
Bathing in an onsen after a refreshing shower deepens the cleansing process by drawing out dirt and impurities. The heat and minerals in the water encourage sweating, helping to flush out toxins.
The calming atmosphere of an onsen also helps lower stress levels, which supports the body’s natural detoxification processes.
Healthier skin
The secret to soft and glowy skin? Mineral-rich onsen water. Silica helps smooth and soften, while sulfur is known to ease conditions like acne, eczema, and psoriasis.
Additionally, the vapor steam helps detoxify and hydrate the skin, leaving a healthy and radiant glow.
Increased metabolism
You might be still, but your body is working hard. Soaking in hot onsen water is considered a high-energy activity that can raise your metabolic rate. A 20-minute bath at 42°C, for example, can burn over 220 kilocalories.
Relaxation from the bath also helps balance your metabolism, and minerals like sulfur may even support metabolic functions.
Improved sleep quality
An evening onsen bath sets the stage for better sleep. Soaking in warm water before bed eases tension, keeps you warm through the night, and promotes deep relaxation — a time-tested Japanese ritual.
At 37–40°C, the water activates your parasympathetic nervous system, slowing your heart and breathing rate to encourage deeper sleep, improved circulation, and full-body recovery.
Now, you might ask, can you go to an onsen every day? Technically yes — many locals do! But it’s best to keep it to a few times a week if you’re new to it or if your skin is on the sensitive side.
Onsen Etiquette
Just like visiting any other country, it’s important to respect certain traditions that they hold close to their hearts. Using an onsen comes with some rules:
Scrub before soaking
Some might think, “Why do you have to wash before entering an onsen?” Well, stepping into the bath with any dirt or residual body fluids isn’t allowed. It’s not just about hygiene — it’s a matter of respect.
Yes…you have to be nude
Don’t worry, it’s more normal than you think. So, to answer the burning question on everyone’s mind — do you have to be naked in an onsen? — the answer is usually a polite but firm yes.
Leave your phones in the locker room!
Definitely not allowed to take pictures or videos while you’re inside an onsen. Privacy and relaxation are top priority.
Inside voices
Onsens are regularly used to destress and relax so be mindful when speaking to your companions. Whisper if you must, but mostly—just soak it in.
Soak, don’t stew
Wondering how long can you stay in an onsen? Some enjoy an hour-long stay in an onsen, others just 10 minutes. Listen to your body and hop out when it’s had enough.
Generally, it is advisable to do your research before visiting an onsen because sometimes these rules can vary!
Where to go onsen in Niseko
Luckily for you, if you prefer to enjoy an onsen in privacy or with not too many people around, The Luxe Nomad has some notable chalets and hotels with private onsens in Hokkaido:
Check Out Our List of the Best Onsens in Niseko
Niseko Kyo
With only 22 units, all of them (except for the studios) have private indoor onsens in each room! Enjoy all the benefits of an onsen in the privacy of your room. This property is also ski-in/ski-out and has an in-house restaurant!
Tsubasa Chalet
This ultra-luxurious chalet in Niseko offers an extra piece of indulgence with not one, but two private onsens. One indoor onsen and another outdoor one. This property designed by Riccardo Tossani can fit a total of 10 people, enough room for the entire family!
The Vale Niseko
This 5-star hotel features a designer luxury onsen, heated pool, and sauna! If this isn’t your ultimate choice for a relaxing holiday, then you’re missing out. To top it off, this property is perfectly located close to shops, restaurants, and mostly importantly – the slopes.
