No. 83 · Wakayama
Nanki Katsuura Onsen
Nanki Katsuura Onsen ranked No. 83 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 Nanki Katsuura Onsen
Facility-level figures; blank town-wide averages are not inferred.
Named facility records for Nanki Katsuura Onsen. Figures marked “Not published” are not treated as town-wide averages.
| Facility | Spring | Source data | Supply | Bath type |
|---|---|---|---|---|
| Hotel Urashima Day-Use Baths | Sulfur-bearing sodium-calcium chloride spring, based on the central mixed-spring tank. Source: The hotel owns 10 springs. The cited representative technical figure is for the hotel's mixed central spring tank, not every source or bath. | Source temperature: 53.8°C for the representative mixed spring in the central tank; not a common value for all 10 springs or bathing pools. pH: Not published in the current material summarized here. | The hotel describes its large baths as source-flowing. The Wakayama Onsen Association lists the central mixed spring as source-flowing, without added water or heating, and with daily water replacement. The current day-use product includes four bath areas, including cave baths. The representative central-tank data are not assumed to describe all 10 springs or every bath identically. | Day-use bath. The most distinctive splurge for a one-off day visit in Nanki-Katsuura, thanks to its cave baths and several bathing areas. For a short or low-budget soak, use a local communal bath instead. |
| Hamayu Natural Hot Spring Public Bath | Sulfur-bearing sodium-calcium chloride spring; mildly alkaline, low-salinity and hot. Source: Hamayu spring, Katsuura Onsen. | Source temperature: 46.3°C. pH: Not published in the current material summarized here. | The bath uses source-flowing water. The Wakayama Onsen Association says a small amount of water may be added during summer temperature adjustment; no heating is used, and the bath is drained and refilled daily. | Day-use bath. A low-cost choice near the station if you want sulfur-bearing, source-flowing water and a traditional hot communal bath. It is not the place for extensive facilities or complimentary toiletries. |
| Ichinotaki Hotel | Simple hot spring; weakly alkaline and low-tonicity. Source: Ichinotaki spring, Katsuura Onsen. | Source temperature: 38.8°C. pH: No numeric value is published; the onsen association describes the spring as weakly alkaline. | The hotel and onsen association describe the baths as 100% source-flowing. The association says no water is added, the water is heated to maintain a comfortable temperature, there is no circulation filtration, and the baths are fully drained and refilled daily. | Day-use bath. A good-value source-flowing bath with a standard-temperature pool and a cooler pool. The published day-use hours and closing days conflict, so check before making the trip. |
Destination comparison
What this onsen town offers
History
70/100Spring character
79/100Town culture
71/100Seasonal scenery
72/100Access
66/100Local history
How the town developed
Four seasons
Seasonal conditions and travel rhythm
Plan your stay
Nanki Katsuura Onsen: day trip or overnight?
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Day trip
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One-night stay
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Stay plus a day bath
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Nanki Katsuura Day-Use Onsen: Cave Baths, Local Sento or a Private Family Bath?Nearby destinations
Other places in the same prefecture in the published ranking.
Related guides
Guides to Nanki Katsuura Onsen
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Sento & public bathsNanki Katsuura Day-Use Onsen: Cave Baths, Local Sento or a Private Family Bath?
Compare Nanki Katsuura’s cave bath, local sento, two-temperature pools and private family bath by travel time and access from Kii-Katsuura Station.
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