No. 24 · Kagawa
Kotohira Onsen
Kotohira Onsen ranked No. 24 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 Kotohira Onsen
Facility-level figures; blank town-wide averages are not inferred.
Named facility records for Kotohira Onsen. Figures marked “Not published” are not treated as town-wide averages.
| Facility | Spring | Source data | Supply | Bath type |
|---|---|---|---|---|
| Kotohira Onsen Yume Sansui Family Baths | Chloride-bicarbonate spring. Source: Kotohira Onsen; a current individual source name was not published. | Source temperature: Not published; an older figure is not treated as current. pH: Not published; an older figure is not treated as current. | The public open-air baths are explicitly described as source-flowing. The family baths use Kotohira Onsen, but water addition, heating, circulation and disinfection have not been fully published for each room; do not assume their treatment matches the public baths. | Day-use bath. Sixteen private rooms span seven bath styles, with four public riverside baths on the same site. The family baths have window views of greenery, but the operator does not identify all 16 as open-air; confirm a specific room if that matters. |
| Kotohira Onsen Yume Sansui Open-Air Baths | Chloride-bicarbonate spring. Source: Kotohira Onsen; a current individual source name was not published. | Source temperature: Not published; older figures are not treated as current. pH: Not published; older figures are not treated as current. | The operator explicitly describes the public open-air baths as source-flowing. Treatment details for the 16 family baths have not been fully published and should not be inferred from the public baths. | Day-use bath. Four stone open-air baths along the Takase River, with a separate 16-room family-bath area. The public baths are source-flowing; that treatment description does not automatically apply to the private rooms. A local bus timetable change takes effect on October 1, 2026. |
Destination comparison
What this onsen town offers
History
71/100Spring character
74/100Town culture
78/100Seasonal scenery
73/100Access
71/100Local history
How the town developed
Four seasons
Seasonal conditions and travel rhythm
Plan your stay
Kotohira 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.
Fukuoka to Hita for Mameda Town and an Onsen: A Day-Trip Plan Without a CarOne-night stay
Compare the ryokan’s bath access with public day-use options and the journey back to your next stop.
Yumeyama-sui in Hita: Riverside Open-Air Bath or Private Family Room?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.
Yumeyama-sui in Hita: Riverside Open-Air Bath or Private Family Room?Related guides
Guides to Kotohira Onsen
Filter English guides by the question you need to answer.
Private bathsYumeyama-sui in Hita: Riverside Open-Air Bath or Private Family Room?
Choose Yumeyama-sui’s riverside public bath or one of 16 private family rooms. Check rates, hours and the Hita bus timetable change on Oct. 1, 2026.
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Day-use bathsFukuoka to Hita for Mameda Town and an Onsen: A Day-Trip Plan Without a Car
Take the Hita-go bus from Fukuoka to Mameda, then head to Kotohira Onsen. Local B-course times and the ¥3,580 round-trip ticket change October 1, 2026.
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Private bathsKotohira Kadan Rooms with Private Onsen Baths: What Is Included?
Compare Kotohira Kadan’s in-room natural spring baths, 45-minute private-bath benefits and public onsen before choosing a room.
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ComparisonsKotosankaku Sansui or Hiten? Which Kotohira Room Is Worth Booking?
Compare Kotosankaku’s Sansui and Hiten buildings, including the guest-only Yakumo no Yu, shared onsen, in-room bath limits and tattoo rules.
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Day-use bathsKotohira Onsen Day Use: Yachiyo or Kotohira Kadan?
After Konpira-san, compare Yachiyo’s lower-cost soak with Kotohira Kadan’s towel-included afternoon visit. See hours, prices and access details.
Read the guideDestinations & itinerariesOne Night in Kotohira: Konpira-san, Dinner and an Onsen Stay
Plan a Kotohira overnight around Konpira-san, dinner and a second bath. Compare bath access and station walks at Kadan, Shikishimakan and Kotosankaku.
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Private bathsSakuranosho Room Guide: Which Guest Baths Use Onsen Water?
Compare Sakuranosho’s Hatsu Ne Premium, Sauna & Spa and Yuraria rooms to see which private baths use natural spring water.
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Private bathsDoes Shikishimakan’s In-Room Bath Use Onsen Water?
Find out which Shikishimakan baths use natural spring water, whether its guest-room open-air tubs are onsen, and what private bathing costs.
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ComparisonsYachiyo or Kotohira Kadan? Two Day-Use Baths Compared
Compare day-use baths at Yachiyo and Kotohira Kadan: prices, short afternoon hours, Yachiyo’s odd/even rooftop sauna schedule, towels and access.
Read the guideOfficial sources
