ThermaeExplore the map →

Wakayama Arida Onsen

Arida, Wakayama Prefecture, Kii Peninsula, Japan
Wakayama Arida Onsen
Location
Arida, Wakayama Prefecture, Kii Peninsula, Japan
Water type
sodium chloride
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Arida, on the Kishima coast of central Wakayama Prefecture, is one of Japan's most celebrated mandarin orange (mikan) producing communities, the terraced hillside citrus orchards of the Arida River valley producing the Arida mikan whose exceptional sweetness and thin skin have made this Wakayama citrus the preferred choice of Japanese confectioners and fresh fruit markets since the Edo period. Wakayama Arida Onsen draws on chloride-rich coastal thermal waters from the marine geological formations of the Wakayama Kishima coast, offering warming maritime baths in a citrus-fragrant coastal community whose extraordinary mikan heritage, the Arida River valley terraced orchard scenery, and the coastal fishing culture of the Kishima Bay fishing ports create a wonderfully fragrant and seasonally vibrant spa setting. The Arida mikan harvest experiences from November through January when the terraced hillsides turn orange with ripe fruit, the Kishima coast fishing heritage and fresh Pacific seafood, and the traditional Kishima Bay boat fishing culture visible from the coastal spa windows make Arida one of Japan's most olfactorily distinctive and seasonally delightful thermal spa destinations on the Wakayama coast.

Insider tip — Arida city on Wakayama's Pacific coast is Japan's premier mikan tangerine-growing region, and its coastal onsen draws sodium-chloride water from marine sediments beneath the coastal plain. The saline baths offer a warm, invigorating soak that pairs naturally with the sea air drifting in from Arida Bay. Late autumn visits coincide with the mikan harvest when the surrounding hillside groves turn a vivid orange.
Find hotels nearby →Tickets & activities →See the map & practical info →

Nearby

Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).