Senshu Onsen

天然温泉泉州の湯関西空港てんねんおんせんせんしゅうのゆかんさいくうこう

Bathing Complex

Kansai·Osaka

050-5210-5300 senshu-onsen.com

Day Use

Yes

07:00–23:59

Last entry is at 23:30, half an hour before the 24:00 close.

¥900

Adults (junior high age and up) pay ¥900 on weekdays and ¥1,000 on weekends and holidays; children (age 3 through elementary school) pay ¥450 weekdays and ¥500 weekends and holidays. Under 3 is free. Special pricing applies during Golden Week, Obon and the New Year period.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Not separately confirmed on the official site pages crawled, but stated by a reviewer.

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Baths are gender-separated for regular use; the site only allows small children (under 120cm / under 8) into the opposite-sex bath with a parent, which is a standard child-accompaniment exception, not general mixed bathing.

Policies & Services

TattooNo

Allows entry with visible tattoos

KidsWith Conditions

Welcomes children and families

Diapered children can't enter the tub (baby bath / shower only); mixed-gender bathing with children is capped at under 120cm or under 8 years old.

DiningYes

Restaurant or dining open to visitors (not just hotel meal plans)

Confirmed open to day-use visitors by reviews (lunch, sea-view dining).

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels available to rent or borrow

Rest AreaYes

Relaxation space for after bathing

Reviewers describe a tatami rest area alongside the manga corner and massage chairs.

ParkingYes

On-site or nearby parking available

泉州の湯

Senshu no Yu

湯

Simple

Color: colorless and clear
Taste: tasteless
Odor: odorless

Sodium Bicarbonate spring

pH 7.8Weakly alkaline

Composition fingerprint0.4 g/kg dissolved · Hypotonic

Na⁺83

HCO₃⁻80

Cl⁻19

◀ CationsAnions ▶

Sodium Na⁺: salt's cation — pairs with chloride to make the water salty.
Bicarbonate HCO₃⁻: "soda" — softens skin, leaves it smooth.

Known good for

Smooth skindry, rough skin
Recoveryfatigue, stress

A simple thermal spring led by sodium and bicarbonate. At pH 7.8 it is mildly alkaline and soft on the skin, with the slightly slippery feel that places it near Japan's beauty-water family. Lightly mineralized at 361 mg/kg of dissolved solids, it is gentle on the body and easy for long, unhurried soaks.

Sampled at wellhead·Analyzed Dec 22, 2018·公益財団法人中央温泉研究所·Cert no. 甲第3708号

Explore the water

Views

Sea

Programs

About

Senshu Onsen is a large day-use bath complex in Rinku, sharing its building with a hotel next to Kansai Airport. Bathing spans an open-air bath looking out over Osaka Bay and the bridge to the airport, an indoor bath, a cold plunge, and two separate sauna rooms: a dry sauna for men and a mist sauna for women. The water is natural onsen water drawn from deep underground, and visitors often note it leaves the skin feeling smooth. Beyond the baths there's a restaurant serving seafood-based dishes from the Osaka area, a rest lounge stocked with over a thousand manga volumes, massage chairs, and a members' gym that's also open to day visitors. It's become a common stop for travelers passing through Kansai Airport, and in 2026 it was named a meiten (名店) in Nifty Onsen's Hyakumeito (百名湯) ranking.

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1 year ago

324. Senshu Onsen, Osaka Modern onsen 15 minutes from Kansai Airport for 800-1000. Operating hours listed as 07:00-24:00. It used to be marked on Google Maps as Aqua Ignis, but recently it's listed only as Senshu Onsen and I didn't see any Aqua Ignis branding. They stamp the 41 Kansai Super Sento stamp rally 24/25 (the name change didn't affect it). Has a restaurant, massage chairs, and chill zone. Bath photos from the internet, matches reality. 1. Outdoor bath with a bay view, clear water, temperature around 39. The fence, while reasonable, significantly obstructs the beautiful view — in person it feels weaker than in photos. 2. Indoor bath, clear water, temperature around 40. Breathing is easy. 3. Sauna. 4. Cold bath with blue water. Overall a decent place, but expectations based on photos and the Aqua Ignis brand were higher. The outdoor bath doesn't quite deliver on the view due to the fences. Also noticed an increase in tourists from the airport. Convenient to stop by on the way to/from the airport, but it looks more interesting to go a bit further to a more compelling place.

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Last updated July 22, 2026