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Aridagawaonsen Hikari Hot Spring

有田川温泉 光の湯ありたがわおんせん ひかりのゆ

Lodging
Kansai·Wakayama
0737-88-5151arida.co.jp

Day Use

Yes
11:00–23:00

07:00-23:00 (Sat-Sun)

¥950

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Cold BathYes

Cold water plunge bath, typically used after sauna

有田川温泉

Aridagawa Onsen

Operated by · 株式会社 有田川

塩
Chloride
Color
very faintly yellow-brown and clear, with a slight iron note
Taste
a faint metallic iron taste
Odor
not recorded

Sodium Chloride spring

Composition fingerprint3.3 g/kg dissolved · Hypotonic
Na⁺93
Cl⁻83
◀ CationsAnions ▶
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Smooth skindry, rough skin
  • Cutsminor wounds

A sodium chloride spring — salty and heat-retaining, though well below ocean salinity. Alkaline at pH 8.4, it has the soft, slippery feel of Japan's beauty-water family. The water carries a faint yellow-brown tint and a slight metallic iron note at the source, and with dissolved solids around 3,309 mg/kg it sits in moderately mineralized territory with noticeable body.

Sampled at wellhead·Analyzed Apr 9, 2024·日本水処理工業株式会社

Explore the water

Programs

About

The bathing side of the Ayuchaya (鮎茶屋) complex in Arida, which also holds a hotel and a dining hall. The water is a sodium chloride spring with enough bicarbonate in it to feel genuinely slippery on the skin. There is a large open-air rock bath open to the trees and the sky, and indoors a shallow lying-down bath and a walking bath, a sauna fired with Kishu binchotan charcoal (紀州備長炭), a steam sauna, and a cool spring pool set right beside the hot tub so you can go back and forth.

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1 review

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Sergey M
9 months ago

639. Aridagawaonsen Hikari Hot Spring, Arida, Wakayama Visited for day use at 950 yen. Day use available from 11:00 to 23:00 (Mon-Fri) and 07:00 to 23:00 (Sat-Sun). They stamp the 88 Onsen of Wakayama stamp book. Bath photos from the internet match roughly — the photos look too new and polished. 1. Indoor zone. Breathing inside is fine. 1.1. Bath with clear water, temperature 41. I thought there was some smell, maybe chlorine or mixed with something. 1.2. Bath with clear water, temperature 28. 1.3. Two saunas. 1.4. Cold bath. 2. Outdoor zone. No view, behind a fence. 2.1. Small stone bath. Clear water with slight cloudiness. Temperature 42. There were wood shavings from trees, leaves, and some grime in the water, possibly limescale. 2.2. Large barrel with clear water, temperature 41. 2.3. Shallow walking bath. A so-so place, would only visit for the achievement. 03.11.2025

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Last updated July 29, 2026