Osaka · Osaka City
Spa Suminoe Natural Open-Air Hot Spring
天然露天温泉 スパスミノエ
A big natural hot spring super-sentō 3 minutes on foot from Suminoekōen Station on the Osaka Metro Yotsubashi Line, right beside the Suminoe boat-race stadium. Its pride is a sprawling open-air zone fed by sodium-chloride spring water: a bamboo path, garden-style rock bath, pot tubs and a lie-down 'forest pot bath' that feel far from the city. Indoors are jet baths, an electric bath, the popular high-concentration carbonated pool, a salt sauna, hot sauna and cold plunge. Prices are modest – adults ¥800 on weekdays and ¥900 on weekends and holidays, children ¥400/¥450 – with a hand stamp for same-day re-entry. Open 10:00 to 2:00 am (last entry 1:00), all year except maintenance days. An udon-centred restaurant and rest areas are attached, and free parking for about 850 cars (3 hours with bathing, 6 with a meal). About 15 minutes by subway from Namba, it is a bayside hideaway you can drop into late after USJ or the Nankō waterfront.
- Price (adult)
- ¥800
- Hours
- 10:00–02:00 (last entry 01:00)
- Closed
- Open daily (maintenance closures)
- Access
- About 3 min on foot from Suminoekōen Station (Osaka Metro Yotsubashi Line); about 15 min on foot from Nankai Suminoe Station; about 5 min by car from the Tamade exit of the Hanshin Expressway Sakai Line
- Water type
- Simple spring
- Tattoos
- Not allowed
- Admission
- Adults (junior-high+) ¥800 weekdays / ¥900 weekends & holidays; elementary ¥400 / ¥450; infants ¥200 / ¥220. 10-ticket book ¥7,300. Towel set hire ¥250. Frequent discount coupons
- Baths
- A “forest onsen in the city”: ~760 m² of outdoor space planted with ~300 trees. The rock-bath “Forest Pot Bath”, built of Totsukawa river stones, and the pavilion-style “Bamboo Grove Bath” swap between men and women weekly. Carbonated, silk and black-silica baths, assorted jet tubs, sauna and cold plunge; the spring water is drinkable. Inside the Mag Suminoe complex (bowling and driving range)
- Water
- Source “Suminoe Izumi-no-yu”: simple spring (hypotonic, mildly alkaline), 34.6 °C, 480 L/min from ~700 m. Clear, tasteless and odourless, with 198 mg/kg bicarbonate for a soft feel. Heated and filtered
- Parking
- ~800 free spaces (3 h with bathing, 6 h with a meal). 3–5 min on foot from Suminoekoen Station (Osaka Metro Yotsubashi line)
- Phone
- 06-6685-1126
- Official site
- spasuminoe.com ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Osaka City. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- 3 min from Suminoekōen Station; open till 2 am daily
- Large bamboo-garden open-air zone; carbonated pool
- ¥800 weekdays; re-entry OK; ~850 parking spaces
Rotenburo among 300 trees and a bamboo grove — an ¥800 onsen 15 minutes from Namba
Spa Suminoe is a day spa inside the Mag Suminoe leisure complex beside Suminoekoen Station on the Yotsubashi line in southern Osaka — a single 15-minute subway ride from Namba. Its concept is a forest in the city: nearly 300 trees planted across ~760 m² of outdoor space, where the rock-built “Forest Pot Bath” of Totsukawa river stones and the pavilion-style “Bamboo Grove Bath” swap between men and women weekly, so two visits show you both. The water is a soft simple spring rising at 480 L/min from 700 m, drinkable too, and with carbonated, silk and black-silica baths on top, ¥800 on weekdays is among the best value of any onsen in Osaka city. Open till 2 a.m. with 800 free parking spaces, it is handy for drivers as well. A little off the tourist track, its clientele is mostly local — the everyday Osaka bath, the polar opposite of tourist-packed Spa World.
Tips & cautions
- Baths swap weekly — check the official site for this week’s allocation if you want the Bamboo Grove Bath.
- Towels not included (set ¥250). No tattoos; entry-time limits for minors.
- Drinking fountain beside the changing room — taste the spring.
- Weekend evenings are busy; weekday daytime or after 22:00 is relaxed.
- Restaurants and a bowling alley in the complex make a family half-day.
- Direct on the Yotsubashi line from Namba/Shinsaibashi hotels — handy for a night bath.
Getting there
3–5 min on foot from exit 2 of Suminoekoen Station (Osaka Metro Yotsubashi line) — Izumi 1-1-82, inside Mag Suminoe, Suminoe-ku. ~15 min from Namba (Yotsubashi Station), ~20 min from Umeda (Nishi-Umeda). Interchange with the New Tram at Suminoekoen. ~800 free parking spaces. Tel. 06-6685-1126.
Before you go
- Tattoos are explicitly not allowed, even if covered.
- Payment is usually by ticket machine in cash — bring coins.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Price
Who with
Amenities
✔ Verified operating: 2026-09 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
More in this area
Spa World Hotel & Resort (formerly Spa World)
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Naniwa-no-yu Onsen
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Nobeha-no-yu Tsuruhashi
Eight minutes from Tsuruhashi Station, home of Osaka's Koreatown, a large bath complex known for its Japanese garden landscaping. Pot baths, a standing-depth bath, rock rotenburo and carbonated pool, plus a separately ticketed Korean-style 'hanjeungmak' stone-sauna zone. Open until 2 am — perfect after the yakiniku streets. Everything is charged to a wristband and settled on exit. ¥1,000 weekdays.
