Wakayama · Shirahama (Three Oldest) + UNESCO Kumano Onsen Trio / 和歌山 / 日本三古湯「白浜」と世界遺産・熊野三湯

Wakayama Onsen Guide

Top hot springs, ryokan, and day-use baths in Wakayama — bilingual guide for travelers.

和歌山のおすすめ温泉地・温泉宿・日帰り温泉を厳選紹介。

Wakayama holds Japan's most spiritually-loaded onsen geography. Shirahama Onsen — on the Kii Peninsula's southwest coast — is one of "Japan's Three Oldest" (alongside Arima and Dogo), with Emperor Saimei's recorded visit in 658 AD. Deeper inland, the Kumano-Kodo pilgrimage routes lead to three of the world's most legendary natural hot springs: Yunomine (the world's only UNESCO-designated onsen bathing site), Kawayu (where the spring rises through the river bed — bathers excavate their own bath), and Watarase (riverside complex). Add Katsuura — a dramatic Pacific-facing onsen with natural cave baths — and the legendary "beauty water" of Ryujin, and Wakayama offers an unmatched onsen pilgrimage. From Osaka: Shirahama 2h 30min by Limited Express Kuroshio.

和歌山は日本最高峰の精神性を持つ温泉地理を擁します。白浜温泉は紀伊半島南西海岸に位置し、「日本三古湯」(有馬・道後と並ぶ)の一つで、658年斉明天皇の行幸記録が残ります。内陸の熊野古道(世界遺産巡礼道)沿いには伝説の三つの温泉——湯の峰(世界遺産指定の唯一の温泉浴場「つぼ湯」)、川湯(川底から湧出、河原を掘って自分専用の湯を作る)、渡瀬(川辺の温泉複合体)。太平洋を望む岬の温泉地・勝浦(洞窟風呂「忘帰洞」)と、「日本三美人湯」の一つ龍神温泉を加えた、他に類のない巡礼温泉県。大阪から特急くろしおで白浜まで2時間30分。

5 Top Onsen in Wakayama

Where to soak

和歌山のおすすめ温泉地・温泉宿 5選

Shirahama Onsen (白浜温泉)01

Shirahama Onsen

白浜温泉

"Japan's Three Oldest" — Emperor Saimei's 658 AD bath

日本三古湯、658年斉明天皇行幸の地

SpringSodium chloride hydrogen carbonate spring塩化物・炭酸水素塩泉
Fromfrom ¥22,000 / night
SourceFree-flow (kakenagashi) per public info/ 源泉かけ流し(公式情報)

Shirahama is one of Japan's "Three Oldest Onsen" (with Arima and Dogo), formally recorded in the 8th-century Nihon Shoki when Empress Saimei and Crown Prince Naka-no-Oe visited in 658 AD. The town wraps around Shirarahama — a 620m crescent of dazzling white silica sand (one of Japan's top-rated beaches). Iconic Sandanbeki (200m sheer cliffs) and Senjojiki ("thousand tatami") flat-rock platform are within walking distance. The "Sakino-yu" historic public bath sits literally on the coastal rocks where waves crash just feet away. Modern Shirahama has 50+ ryokan, the Adventure World marine park, and a small airport with direct Tokyo flights. From Osaka: 2h 30min Limited Express Kuroshio.

  • "Japan's Three Oldest" — 658 AD Emperor Saimei visit
  • Shirarahama Beach — 620m white silica sand
  • "Sakino-yu" historic seaside public bath

Hours and prices vary — always confirm on the official site before visiting.
営業時間・料金は変動するため、必ず公式サイトでご確認ください。

Yunomine Onsen (湯の峰温泉)02

Yunomine Onsen

湯の峰温泉

World's only UNESCO-designated onsen — "Tsubo-yu" private bath

世界唯一の世界遺産温泉「つぼ湯」、1800年の聖湯

SpringSulfur sodium chloride hydrogen carbonate spring含硫黄・塩化物・炭酸水素塩泉
Fromfrom ¥18,000 / night
SourceFree-flow (kakenagashi) per public info/ 源泉かけ流し(公式情報)

Yunomine Onsen is the world's only hot spring formally designated as part of a UNESCO World Heritage Site — registered in 2004 as part of the "Sacred Sites and Pilgrimage Routes in the Kii Mountain Range" cultural heritage. Yunomine has a 1,800-year origin legend (discovered by a Buddhist hermit in the 4th century AD), and was the purification bath for medieval pilgrims walking the Kumano-Kodo to Kumano Hongu Taisha shrine. The most famous bath is "Tsubo-yu" — a tiny 2-person rock-cut tub at the edge of a stream, available by 30-min slot for ¥800. The water color changes seven times daily depending on temperature and minerals. About 10 small ryokan operate in the tiny mountain valley.

  • World's only UNESCO-designated onsen (2004 World Heritage)
  • "Tsubo-yu" — 30-min private bath, water changes color 7 times
  • 1,800-year origin — medieval Kumano-Kodo pilgrim purification

Hours and prices vary — always confirm on the official site before visiting.
営業時間・料金は変動するため、必ず公式サイトでご確認ください。

Kawayu Onsen (川湯温泉)03

Kawayu Onsen

川湯温泉

Dig your own bath in the riverbed + winter's "Sennin-buro"

河原を掘って自分の湯を作る、冬の名物「仙人風呂」

SpringSodium hydrogen carbonate chloride spring炭酸水素塩・塩化物泉(ナトリウム)
Fromfrom ¥16,000 / night
SourceFree-flow (kakenagashi) per public info/ 源泉かけ流し(公式情報)

Kawayu Onsen is one of the most singular hot springs in Japan — the springs rise directly through the gravel bed of the Oto River, and bathers can excavate their own personal hot pool with a shovel from the ryokan, fed by 73°C water bubbling up from below. From December to February the river volume drops and the village dams a section to create "Sennin-buro" (Hermit's Bath) — a 1,000-person-capacity natural rock pool, free and open 24 hours. The other half of the year, the spring is only accessible by riverside excavation. Located deep in the Kii mountains near Kumano Hongu Taisha. About 10 ryokan + numerous campsites. Close to Yunomine — 5 min by car.

  • Dig your own riverside bath with rented shovel
  • "Sennin-buro" 1,000-person rock pool (Dec–Feb only)
  • Free, 24-hour public bathing in winter

Note: "Sennin-buro" operates December–February only. Outside this period, bathe at your ryokan or excavate a small pool yourself.「仙人風呂」は12〜2月限定。それ以外の期間は旅館の湯か自分で河原を掘る。

Hours and prices vary — always confirm on the official site before visiting.
営業時間・料金は変動するため、必ず公式サイトでご確認ください。

Katsuura Onsen (勝浦温泉)04

Katsuura Onsen

勝浦温泉

Pacific Ocean cave baths + tuna market + Nachi Falls

太平洋の洞窟風呂、生マグロと那智の滝

SpringSodium chloride hydrogen carbonate spring塩化物・炭酸水素塩泉
Fromfrom ¥22,000 / night
SourceFree-flow (kakenagashi) per public info/ 源泉かけ流し(公式情報)

Katsuura Onsen sits near the southern tip of the Kii Peninsula, perched on a headland facing the open Pacific Ocean. The town's defining feature is "Bouki-do" (忘帰洞) — a massive natural cave open to the sea, converted into a hot spring bath that's been described as "the most dramatic onsen in Japan." The cave's name means "Cave That Makes You Forget to Go Home" — coined by Tokugawa Yorimichi of the Kii clan in 1921 after a bath. Katsuura is also home to Japan's largest tuna fishing port — the dawn auction is open to visitors. Nachi-no-Taki (Japan's tallest single-drop waterfall, 133m, sacred to Kumano) is 20 min away. From Osaka: 3h 30min by Limited Express Kuroshio.

  • "Bouki-do" — massive natural cave onsen, Pacific Ocean facing
  • Japan's largest tuna fishing port — dawn auction open to public
  • Nachi-no-Taki — Japan's tallest single-drop sacred waterfall (133m)

Hours and prices vary — always confirm on the official site before visiting.
営業時間・料金は変動するため、必ず公式サイトでご確認ください。

Ryujin Onsen (龍神温泉)05

Ryujin Onsen

龍神温泉

"Japan's Three Beauty Waters" — Kobo Daishi origin (8th c)

日本三美人湯、弘法大師ゆかりの龍神村の湯

SpringSodium hydrogen carbonate spring炭酸水素塩泉(ナトリウム)
Fromfrom ¥18,000 / night
SourceFree-flow (kakenagashi) per public info/ 源泉かけ流し(公式情報)

Ryujin Onsen is one of "Japan's Three Beauty Waters" (alongside Kawanaka Onsen in Gunma and Yunokawa Onsen in Shimane) — known for waters so soft and skin-conditioning that bathers reportedly emerge with visibly silky skin. The hot spring was said to be discovered by Kobo Daishi (founder of Shingon Buddhism) in the 9th century, then formally developed by the Tokugawa clan of Kii as their official bath retreat in the Edo period. The village is in a deep, narrow valley of the Hidaka River, with about 10 traditional ryokan tucked into the mountainside. Located within the deep mountains of Wakayama; accessing requires a 1.5h drive from Tanabe Station on the coast.

  • "Japan's Three Beauty Waters" — silkiest skin-conditioning
  • 9th-century Kobo Daishi origin + Tokugawa clan official bath
  • Deep mountain valley — true hidden-onsen atmosphere

Hours and prices vary — always confirm on the official site before visiting.
営業時間・料金は変動するため、必ず公式サイトでご確認ください。

Insider Tips for Wakayama

Know before you go

和歌山の旅で知っておきたい5つのこと

Yunomine Tsubo-yu — Arrive Early to Get a Time Slot

湯の峰「つぼ湯」は朝イチで予約

Tsubo-yu accepts 30-min slots only, first-come-first-served from 6am — and runs out by 9am most days. Arrive at the Yunomine reception desk by 6am to secure a slot. ¥800 per group up to 2 people, no reservations by phone. The bath is so small that only 2 can fit at once, intensifying the "world's only UNESCO onsen" experience.

つぼ湯は30分単位の先着順(朝6時から受付)で、9時前に売り切れる日が大半。湯の峰の受付に6時前に並ぶのが必須。1組(2人まで)800円、電話予約不可。2人しか入れない狭さが「世界唯一の世界遺産温泉」体験を濃密にします。

Kumano-Kodo + 3-Onsen Pilgrim Loop

熊野古道+三湯巡り、巡礼ループ

2-night Kumano spiritual itinerary: Day 1 walk Kumano-Kodo Nakahechi route to Kumano Hongu Taisha (3–4h hike, JR Kii-Tanabe → bus → trailhead), stay at Yunomine that night. Day 2 visit Hongu Taisha + soak Tsubo-yu + explore Kawayu (only 5 min apart), stay at Kawayu. Day 3 visit Kumano Nachi Taisha + Nachi Falls + Katsuura tuna market, return via Kii-Katsuura Station.

2泊3日の熊野巡礼コース:1日目JR紀伊田辺→バスで中辺路コース登山口→熊野本宮大社まで3〜4h徒歩巡礼、湯の峰泊。2日目本宮大社+つぼ湯+川湯(5分の距離)、川湯泊。3日目熊野那智大社+那智の滝+勝浦のマグロ市場、紀伊勝浦駅から帰京。

Katsuura Tuna Auction — 6am Dawn Visit

勝浦マグロ競り、6時の早朝見学

Katsuura is Japan's #1 fresh-tuna port (not frozen). The dawn auction starts around 7am, with viewing open from 6am from the 2nd-floor observation deck of the market. Free to watch. Many Katsuura ryokan serve "tetsu-tetsu" raw tuna at breakfast or dinner — the freshest in Japan, sometimes still pulsing.

勝浦は日本一の生マグロ漁港(冷凍ではない)。早朝7時開始の競りは、市場2階の見学デッキから6時から無料見学可。勝浦温泉の多くの旅館では朝食・夕食で「鉄板生マグロ」を提供——日本一新鮮、時には魚体がまだ脈打つほど。

Kawayu Sennin-buro — Winter Only

川湯「仙人風呂」は冬期限定

The famous 1,000-person riverside "Sennin-buro" operates December 1 to February 28 only. It's an open-air communal hot pool (swimwear / towel-wrap allowed) carved from the river bed when winter low-water reveals the spring. Open 24 hours, free. Outside this season, bathers excavate small personal pools in the riverbed.

名物「仙人風呂」(1000人収容)は12月1日〜2月28日限定。冬の渇水期に川底の湯源が現れたところを集落が堰き止めて作る巨大露天(水着・タオル巻きOK)。24時間無料開放。それ以外の季節は河原に小さな個人風呂を掘って入浴。

Shirahama Sakino-yu — Limited Hours, Worth It

白浜「崎の湯」は時間注意、しかし絶対行く価値

Shirahama's historic "Sakino-yu" — a public bath literally on coastal rocks where Pacific waves crash — operates 8am–5pm (winter) / 7am–7pm (summer). ¥500 admission, gendered baths. The waves can reach the bath edge during rough weather. Aim for late-afternoon for sunset over the water, or early morning for empty crowds.

白浜の歴史ある「崎の湯」(海岸の岩の上で波が砕ける共同浴場)は冬期8〜17時、夏期7〜19時の営業。500円、男女別。荒天時は波が浴槽の縁まで届きます。夕日狙いなら夕方、人の少なさ重視なら早朝が穴場。

Travel Essentials

Plan your trip

旅の準備

Book a Ryokan

Use major Japanese travel platforms to find ryokan with private open-air baths, tattoo-friendly facilities, or vegan kaiseki meals.

eSIM & WiFi

Most onsen towns have spotty 4G coverage. A Japan eSIM or pocket WiFi keeps Google Maps and translation apps running smoothly.

Getting There

See each onsen listing above for access details. Most Wakayama onsen towns are reachable by JR trains, limited express, or highway bus; for remote springs, a rental car gives the most flexibility.

FAQ

Common questions

よくある質問

Best base for Kumano onsen pilgrimage?熊野温泉巡礼の拠点はどこ?

Yunomine Onsen is the most spiritually-loaded base (UNESCO-designated, walking distance from Kumano Hongu Taisha). Kawayu next door for unique riverside bathing. Katsuura for Pacific views + Nachi Falls + tuna. Avoid Shirahama if your focus is pilgrimage — it's a resort beach town with little Kumano connection.

湯の峰が最も精神性高い拠点(世界遺産+熊野本宮大社徒歩圏)。川湯が川辺の特異な湯体験。勝浦が太平洋ビュー+那智の滝+マグロ。白浜は巡礼目的なら除外——リゾートビーチで熊野とのつながりが薄い。

How to access Wakayama remote onsen without a car?車なしで和歌山の山奥温泉に行ける?

Shirahama and Katsuura are reachable by direct Limited Express. For Kumano-Kodo onsen (Yunomine/Kawayu): Limited Express Kuroshio → Kii-Tanabe Station → Kumano Kotsu bus (1h 50min to Yunomine; runs ~5 times/day). For Ryujin: Limited Express → Tanabe → bus 90 min, infrequent. Plan around bus schedules. Many ryokan offer pickups.

白浜・勝浦は特急直通で楽。熊野古道温泉(湯の峰・川湯)は:特急くろしお→紀伊田辺駅→熊野交通バス(湯の峰まで1時間50分、1日5本程度)。龍神温泉は田辺→バス90分で本数少なく難所。バス時刻表で予定組む。多くの旅館が無料送迎提供。

Best month for Wakayama onsen?和歌山温泉のベストシーズン?

December–February for Kawayu Sennin-buro (winter-only) + clear skies. April for cherry blossoms at Nachi Falls + Kumano paths. October–November for foliage at Kumano shrines. Avoid August (humid heat + typhoon season). Year-round access to Shirahama with mild winter temperatures.

12〜2月は川湯「仙人風呂」(冬限定)+ 澄んだ空。4月は那智の滝+熊野道の桜。10〜11月は熊野神社の紅葉。8月は湿度高く台風シーズンで避ける。白浜は冬も温暖でアクセス通年可。

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