No. 62 · Akita
Tamagawa Onsen
Tamagawa Onsen ranked No. 62 in the published 2025 Japan hot-spring destination list. Check bathing options, access and stay details before planning your visit.
Spring information
Water and bathing details for Tamagawa Onsen
Facility-level figures; blank town-wide averages are not inferred.
Named facility records for Tamagawa Onsen. Figures marked “Not published” are not treated as town-wide averages.
| Facility | Spring | Source data | Supply | Bath type |
|---|---|---|---|---|
| Tamagawa Onsen Day Bath | Strongly acidic spring whose main component is hydrochloric acid, as described by the hotel. Source: Obuki (Great Boiling Spring), shared with Shin-Tamagawa Onsen. | Source temperature: 98°C at the Great Boiling Spring; this is not bath temperature. pH: 1.2. | The large bath has pools using 100%, 50% and weaker spring concentrations. Not every pool uses undiluted source water. Pool-by-pool addition, heating, circulation and disinfection details are not fully published. | Day-use bath. A spring-to-autumn destination for the Great Boiling Spring, natural rock-bed bathing area and long-standing therapeutic-bathing culture. The main building closes in winter; switch to Shin-Tamagawa Onsen then. |
| Shin-Tamagawa Onsen Day Bath | Strongly acidic spring whose main component is hydrochloric acid, as described by the hotel. Source: Obuki (Great Boiling Spring), shared with Tamagawa Onsen. | Source temperature: 98°C at the shared Great Boiling Spring; this is not bath temperature. pH: 1.2 for the shared source. | Pools use different concentrations of the same source, including 100%, 50% and weaker spring water. The current hotel guide lists the outdoor bath at 30% source water. Pool-specific treatment details are not fully published. | Day-use bath. Choose it for the modern facilities, extensive range of baths, outdoor pool and year-round operation. It draws from the same source as Tamagawa Onsen, so decide between them by facilities and season rather than spring quality. |
| Tamagawa Onsen Ikoi-no-Yu | Sodium-calcium chloride cold mineral spring; high concentration and neutral classification. | Source temperature: Not published pH: Not published | A 2022 analysis sheet records iron and manganese removal before the water is sampled. Current official text does not publish heating, circulation or disinfection details for each bath. | Day-use bath. A practical stop for drivers, campers and RV travellers heading north from central Hagi. It pairs a garden-style outdoor bath with a saline cold mineral spring at a lower price than a seafront ryokan bath. |
Destination comparison
What this onsen town offers
History
76/100Spring character
90/100Town culture
77/100Seasonal scenery
78/100Access
72/100Local history
How the town developed
Four seasons
Seasonal conditions and travel rhythm
Plan your stay
Tamagawa Onsen: day trip or overnight?
Compare travel time, bath access and the time you want to spend in town.
Day trip
Check the first and last transport connections, then confirm which baths accept day visitors and when they stop admitting guests.
Tamagawa Onsen Ikoinoyu: Prices, Sauna Rotation and AccessOne-night stay
Compare the ryokan’s bath access with public day-use options and the journey back to your next stop.
Stay plus a day bath
Choose one bath experience for your stay and use a day facility for a different source or setting, where the published details support it.
Tamagawa Onsen Ikoinoyu: Prices, Sauna Rotation and AccessNearby destinations
Other places in the same prefecture in the published ranking.
Related guides
Guides to Tamagawa Onsen
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ComparisonsTamagawa Onsen vs Shin-Tamagawa Onsen: Which One Should You Visit?
Compare Tamagawa and Shin-Tamagawa Onsen for a day trip or stay, with bathing fees, pH 1.2 water, bedrock bathing, seasonal closures and bus access.
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Destinations & itinerariesOoedo Onsen Monogatari Dogo: What the Baths, Buffet and Views Are Like
Ooedo Onsen Monogatari Dogo uses Tamagawa Kosen, not Dogo Onsen water. Check its hilltop baths, buffet, shuttle and tattoo-cover rules before booking.
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Destinations & itinerariesSakaeyu near JR Noda: A Steam-Sauna Stop before Midnight
Find Sakaeyu near JR Noda and Tamagawa stations. Check its steam sauna, cold bath, ¥600 admission, midnight closing and Monday rest day.
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ComparisonsAbugawa or Tamagawa Onsen? Choosing a Day Bath Around Hagi
Compare Abugawa and Tamagawa near Hagi by price, spring type, sauna rotation, bus access and driving route before choosing a day bath.
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Getting thereTamagawa Onsen Ikoinoyu: Prices, Sauna Rotation and Access
Ikoinoyu near northern Hagi charges ¥550; its sauna changes sides every other week. The 20.7°C sample came from a treated supply pipe, not a bath pool.
Read the guideOfficial sources
