Right Onsen › Gunma › Kusatsu
Naginoyu
3.8★ · 42 Google ratings · Kusatsu, Gunma · 凪乃湯
✓ Kakenagashi
Before you go
Can you bathe here?
Day visitors
✕ Local residents onlyReported by two visitors
Hours
07:30–19:00From the facility's listing
Tattoos
? Call aheadNo policy stated in the 35 recent reviews we read or on the facility's website
Price
Free adultConfirmed by recent visitor reports
How we know this
- Day visitors: Since at least 2020, access restricted to local residents only; multiple reviews from 2022–2025 confirm this policy remains in effect. · 2 visitors, Dec 2024 – Sep 2025
- Price: Multiple reviews confirm entry is free when access is permitted. · 3 visitors, Jul 2020 – Sep 2025
Atmosphere
The bath
What you’ll find
Free community bath in Kusatsu using Nishi-no-Kawarahara hot spring source, extremely hot (48–53°C) and requires cold water mixing to enter.
Bath setup
Indoor baths
1.0Reported by two visitors
Outdoor bath
✕ NoReported by one visitor
Spring water
Spring type
sodium-calcium sulfate-chloride, acidicConfirmed by recent visitor reports
Bath temperature
51°CMeasured temperatures range 48–53°C across reviews from 2018–2026; most reports cluster around 50–51°C.Confirmed by recent visitor reports
Free-flowing (kakenagashi)
✓ FullFresh spring water flows continuously through the bath
Water added
✓ YesCold water tap available in bath; nearly all visitors use it to cool the spring water before entering.Confirmed by recent visitor reports
How we know this
- Indoor baths: Single small wooden tub; capacity approximately 2–3 persons maximum. · 2 visitors, Oct 2018 – Mar 2020
- Outdoor bath: Bath located in semi-basement indoors. · 1 visitor, Mar 2020
- Spring type: Colorless, acidic spring; visitors report sour taste and skin drying; described as Nishi-no-Kawarahara source. · 3 visitors, Jan 2019 – Jul 2020
- Bath temperature: Measured temperatures range 48–53°C across reviews from 2018–2026; most reports cluster around 50–51°C. · 4 visitors, Jan 2020 – Jun 2026
- Free-flowing (kakenagashi): Reviews confirm source water flows continuously (kakeflow) from Nishi-no-Kawarahara spring. · 2 visitors, Jan 2019 – Mar 2020
- Water added: Cold water tap available in bath; nearly all visitors use it to cool the spring water before entering. · 4 visitors, Feb 2023 – Sep 2025
Timing
When to go
Quietest Monday around 11:00. Busiest Monday around 1:00.
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 07:30–19:00 |
| Tuesday | 07:30–19:00 |
| Wednesday | 07:30–19:00 |
| Thursday | 07:30–19:00 |
| Friday | 07:30–19:00 |
| Saturday | 07:30–19:00 |
| Sunday | 07:30–19:00 |
Getting there
How to get there
Nearest station
Haneo8.3 km in a straight line; bus or taxi from the station
Address
Otsu-496 Kusatsu, Kusatsu, Agatsuma District, Gunma 377-1711乙４９６ Kusatsu, Agatsuma District, Gunma 377-1711 · From the facility's listing
Show a driver
凪乃湯The name in Japanese, for a taxi or at the counter
Website
www.kusatsu.ne.jpOfficial, in Japanese
The map loads only when you ask for it and connects your browser to Google.
Nearby
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What matters
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Questions
Common questions
Can I visit Naginoyu without staying overnight?
Since at least 2020, access restricted to local residents only; multiple reviews from 2022–2025 confirm this policy remains in effect.
How much does Naginoyu cost?
Multiple reviews confirm entry is free when access is permitted.
Is the water free-flowing spring water?
Reviews confirm source water flows continuously (kakeflow) from Nishi-no-Kawarahara spring.
