Onsen · Kansai

Nanki-Shirahama Onsen

Shirahama, Wakayama♨ Mainly sodium chloride springs (the Mabuyu source at Muronoyu is a sulfur-containing sodium chloride strong saline spring)

Overview

A seaside onsen area in the southwest of the Kii Peninsula with white sand beaches and views of the Pacific Ocean. You can use the town-run public baths, such as Sakinoyu, an outdoor bath facing the sea, at affordable prices. It is about 2 hours 10 minutes by limited express from Osaka, and about 1 hour by plane from Tokyo.

The onsen town spreads out around Shirarahama Beach. Sakinoyu is an outdoor bath facing the sea. Coastal scenic spots such as the sunset at Engetsu Island and the rocky shelf of Senjojiki are also close to the onsen town.

Location: Shirahama, Wakayama
Official website: https://www.nanki-shirahama.com/

Nearby area

Shirahama & NankiWeather and what to wear in Shirahama & Nanki →

Tickets & tours you can book in advancePR

Day-Use Baths

Baths you can visit without staying

Public baths, day-use spas and foot baths open to non-staying visitors.

Public bath

Sakinoyu

Price: Age 3 and up ¥500 (as of October 2026)
Hours: April–June and September 8:00–18:00, July–August 7:00–19:00, October–March 8:00–17:00 (last entry 30 minutes before closing)
Closed: Open every day (may close temporarily for maintenance, etc.)
Note: An outdoor bath facing the sea. Because the water flows into the sea, soap and shampoo cannot be used
Official site: https://www.town.shirahama.wakayama.jp/soshiki/kanko/koen/shisetsu/pubric_spa/1450338115191.html

Public bath

Shirarayu

Price: Adults ¥420, juniors ¥140, children ¥80 (as of October 2026)
Hours: 9:00–11:00 (last entry 10:30), 14:00–21:30 (last entry 21:00)
Closed: Thursdays
Note: 7:00–9:00 is for Shirahama residents only
Official site: https://www.town.shirahama.wakayama.jp/soshiki/kanko/koen/shisetsu/pubric_spa/1450338453414.html

Public bath

Muronoyu

Price: Adults ¥420, juniors ¥140, children ¥80 (as of October 2026)
Hours: 9:00–11:00 (last entry 10:30), 14:00–21:30 (last entry 21:00)
Closed: Tuesdays
Note: Has two sources with different spring types. 7:00–9:00 is for Shirahama residents only
Official site: https://www.town.shirahama.wakayama.jp/soshiki/kanko/koen/shisetsu/pubric_spa/1450338114888.html

Prices and hours are as of the date shown and may change, with occasional closures. Check each facility’s official website before you go.

🖋 If you have tattoos

There is no official guidance for the onsen area as a whole on bathing with tattoos. Policies vary by facility, so please check with each facility

Spring

Spring type and features

♨ Mainly sodium chloride springs (the Mabuyu source at Muronoyu is a sulfur-containing sodium chloride strong saline spring)

According to the town, Sakinoyu is said to be effective for neuralgia, joint pain and chronic skin conditions, and Shirarayu for cuts, burns and chronic skin conditions

Etiquette

Bathing etiquette

✓Pour hot water over yourself before getting into the bath
✓Do not put towels in the bath
✓Tie up long hair so it does not touch the water
✓Do not take photos in the bathing area
✓Do not use soap or shampoo at Sakinoyu

Sights

Nearby sights

Shirarahama Beach

About 620 m long. White quartz sand and emerald-green sea

Engetsu Island

A small island with a round sea cave in the middle. One of Wakayama's 100 best sunset spots

Senjojiki

A huge sandstone rock shelf jutting out into the Pacific. Take care on windy days

Tips

Good to know

!Sakinoyu's hours change by season; in winter it closes at 17:00
!Shirarayu and Muronoyu cannot be used from 11:00 to 14:00 in the middle of the day
!Shirarayu is closed on Thursdays and Muronoyu on Tuesdays

Access

Nearest station / bus stop: Shirahama Station (JR Kinokuni Line)
Nanki-Shirahama Airport
From major cities and airports: Shin-Osaka: JR Limited Express (Kuroshio) (About 2 hours 10 minutes)
Haneda Airport: Fly to Nanki-Shirahama Airport (About 1 hour)

Open in Google Maps ↗

Getting There

Getting there from major cities

Tokyo → Osaka

Fastest: Approx. 2 hr 30 min (shortest 2 hr 21 min)

🚄 Shinkansen✈ Flight🌙 Overnight bus

Travel Passes

Travel passes for getting there

🚄 JR

Japan Rail Pass

Nationwide ・ Three types: 7, 14 or 21 days. The period of use cannot be extended or changed

From ¥50,000

🚄 JR

Kansai WIDE Area Pass

Kansai ・ 5 consecutive days (from 0:00 on the first day to 24:00 on the last day)

From ¥12,000

Where to Stay · Agoda

Places to Stay near Nanki-Shirahama OnsenPR

PRSee more places to stay near Nanki-Shirahama Onsen on Agoda →

Prices and availability are shown on Agoda.

Events

Events and festivals in Shirahama & Nanki

July

Nachi Fire Festival (Nachi no Ogi Matsuri)

Kansai ・ Shirahama & Nanki

Every year on July 14 (held during the day; Yoimiya offering events are also held the day before, on the 13th)

2027: Jul 14 (held every year on July 14)

See all events →

Attractions

Attractions in Shirahama & Nanki

Zoo

Adventure World

Kansai ・ Shirahama, Wakayama

A theme park in Nanki-Shirahama that combines a zoo, an aquarium, and an amusement park. With Safari World for land animals, Marine World for sea creatures, a petting area, and the "Play Zone" amusement park, it easily fills a full day. All four giant pandas left for China in June 2025, so the highlights now center on penguins, the safari, and marine shows.

See all attractions →

Onsen

Onsen towns in Kansai

♨ Onsen

Arima Onsen

Kansai ・ Kita-ku, Kobe, Hyogo

♨ Day use Adults ¥800 (weekdays ¥650), elementary and junior high school students ¥350, preschoolers free; Kin no Yu and Gin no Yu combined ticket ¥1,200 (as of October 2026)

♨ Onsen

Kinosaki Onsen

Kansai ・ Toyooka, Hyogo

♨ Day use Adults ¥800, children (age 3 to elementary school) ¥400 (as of October 2026)

♨ Onsen

Nanki-Katsuura Onsen

Kansai ・ Nachikatsuura, Wakayama

♨ Day use Adults ¥2,500, children (age 3 to elementary school) ¥1,250, towel included (as of October 2026)

Private baths

See all onsen towns →

Prices, hours, tattoo policies and spring types are based on official facility, municipal and tourism association information. They can change, so check the official websites before you go.

Last checked: 2026-10-08

Nanki-Shirahama Onsen

Overview