Right Onsen › Oita › Saiki
Natural Seawater Bath Shio-Yu
4.3★ · 26 Google ratings · Saiki, Oita · 天然海水風呂 塩湯
✓ Free-flowing source water✓ Rest area✓ Restaurant
Before you go
Can you bathe here?
Day visitors
✓ YesVisitors bathe as day guests alongside dining at the attached restaurant.stated by 3 visitors · Jan 2024 – Aug 2026
Hours
Not published in the listing · call aheadno opening hours in the Google listing
Price
¥500Multiple visitors from 2025-2026 report a 500 yen adult admission fee.stated by 3 visitors · Mar 2026 – Aug 2026
Private bath
✓ YesA separate family/private bath exists alongside the main communal bath.stated by 3 visitors · Oct 2024 – Mar 2026
Tattoos
Not known · call aheadno policy stated in the 18 recent reviews we read
Watch out
Hair dryer
A hair dryer is available, though sometimes only one for the whole changing room.
stated by 5 visitors · Nov 2024 – Aug 2026Soap & shampoo
Shampoo, conditioner and body soap are provided at the wash stations.
stated by 3 visitors · Aug 2025 – May 2026Lockers
Lockers are free to use but only a couple have working locks.
stated by 2 visitors · Mar 2026 – May 2026The bath
What you’ll find
This is a seawater bath (not a natural hot spring) attached to a popular seafood restaurant, offering indoor, outdoor, and cold plunge baths plus a sauna for about 500 yen, with ocean views.
Outdoor bath
✓ YesReviewers describe an outdoor or semi-outdoor bath with ocean views.stated by 3 visitors · Oct 2024 – Aug 2026
Sauna
✓ YesA sauna is included in the regular admission fee.stated by 3 visitors · Oct 2024 – Jul 2026
Cold bath
✓ YesA seawater cold plunge bath is available alongside the sauna.stated by 3 visitors · Nov 2024 – Jul 2026
View
OceanThe bath faces the ocean directly, praised for its scenic view.stated by 3 visitors · Nov 2025 – Aug 2026
Restaurant
✓ YesThe bath is attached to a well-known seafood restaurant with shared facilities.stated by 3 visitors · Aug 2025 – Aug 2026
The water
Spring type
Chloride (heated seawater)One reviewer described the water as slightly viscous chloride-type seawater.stated by 1 visitor · Aug 2026
Practical
What to bring
Soap & shampoo
✓ ProvidedShampoo, conditioner and body soap are provided at the wash stations.stated by 3 visitors · Aug 2025 – May 2026
Lockers
✓ FreeLockers are free to use but only a couple have working locks.stated by 2 visitors · Mar 2026 – May 2026
Hair dryer
✓ YesA hair dryer is available, though sometimes only one for the whole changing room.stated by 5 visitors · Nov 2024 – Aug 2026
Practical
Plan your visit
📍 2601 879 Kamiura Oaza Azamuiura, Saiki, Oita 879-2601
🚃 Azamui station, 1.4 km
📋 Show at the counter: 天然海水風呂 塩湯
Nearby
Other baths close by
Saiki · 3.6★
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