Shiraito no Yu Hot Spring

■Date Wednesday, March 19, 2025 Visited at 8:45 AM ■Access Close to the Utsukushigahara Onsen bus stop ■Crowdedness/Lockers 8 men Free lockers with locks are available, large enough to fit a backpack ■Hot Springs/Price Alkaline Simple Hot Spring/¥350 •Water Temperature: 42.4°C •Flow Rate: Unknown •pH: 8.7 This alkaline simple hot spring is known for its skin-beautifying properties. There are indoor and outdoor baths. The hot spring water is colorless, transparent, and odorless, with a slightly lukewarm feel. The indoor bath is about 41°C, almost the same temperature as the source. The tub is large, so I think it can fit about 8 people. The outdoor bath temperature is slightly lower, at around 40°C. It may have been lowered by the snowfall today. ■Amenities Shampoo/Body Soap: None Hair Dryer: Available (2 units, fee applies) Lotion etc.: None Other: None ■Overall Utsukushigahara Onsen is a hot spring resort, but this seems to be the only public bath. It's open from 7am and is very convenient at just 350 yen. That's why it seems to be popular with locals. 350 yen is a great deal for a hot spring bath.

It's great that this hot spring is open until 10pm. The quality of the water is nothing particularly noteworthy, but it's lukewarm, making it easy to soak in for a long time. The bathing fee is 400 yen as of February 2026. It's nice that you can pay with PayPay. There are lockers that don't require 100 yen coins. This is Utsukushigahara Onsen, but it seems like this is the place to go when it's difficult to get to Hinoki no Yu, which is further back (it closes early). The open-air bath is in the style of an east-style house, and the roof is covered, so it doesn't feel as open. It doesn't seem to be a natural hot spring, so if you really want to enjoy the hot spring, you might want to consider another bath. This is a hot spring loved by locals rather than a tourist spot. → Correction: The sign said that the water is natural from the source

The parking lot is spacious and free. The bathing fee is 400 yen. The water is direct from the source (disinfected), and the open-air bath had a slight chlorine smell. The water was not too hot, around 40 degrees. No shampoo is provided. PayPay can be used at the ticket machine and reception. There are lockers for valuables at reception. There are also lockers with locks in the changing rooms. There are two indoor baths. There was one small open-air bath. There was a drinking faucet, and some people took their water home in plastic bottles. If you bring your own hair dryer, you can get a usage card for 50 yen. The Dyson hair dryer they have available costs 100 yen for 5 minutes. Rather than aiming for a relaxing bath, it seems like a good idea to take a quick dip, like at a public bath. It seemed like there were a lot of regulars.

September 13, 2025, Morning Bath I arrived around 8:00 AM, and there were six other guests, so it was empty. The entrance fee was 400 yen, and lockers and shoe lockers were free. No soap was provided. There was only one indoor bath, and it was divided in half, so I thought the temperature might be different, but it was exactly the same. The water was clear and colorless, with a slight chlorine smell. It left my body feeling slightly smooth, and the temperature measured 38°C on my own thermometer. There was also one open-air bath, and it was the same temperature as the indoor bath. The early morning opening, the price, and the large parking lot were great, but as someone who likes hot water, it wasn't satisfying at all, so I quickly went in and left.

The adjacent 100-yen parking lot becomes free if you mention you're using this hot spring facility. It's a hot spring facility like a local public bathhouse, and the entrance fee is a cheap 350 yen. There are no body soaps or shampoos provided. Hair dryers cost 100 yen for 5 minutes. There are indoor and outdoor baths, but both are lukewarm. The downside is that it's full of elderly people soaking for long periods, probably because the water is lukewarm, making it difficult to actually get into the hot springs. The quality of the water is also unremarkable, similar to Asama.