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Arakawa Onsen

Arakawa, Tokyo, Japan
Arakawa Onsen
Location
Arakawa, Tokyo, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

Water profile

Thermicity
Sedative
41 °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

Arakawa Onsen is a community thermal bath in Arakawa Ward in northern Tokyo, whose unique pride is the Toden Arakawa Line—the last surviving tram line in Tokyo proper, a nostalgic relic of the extensive pre-war tram network, now running 12.2 kilometers between Waseda and Minowabashi through some of the city's most traditionally residential and artisanal neighborhoods in a slowly moving encounter with old Tokyo streetscape. The siliceous mineral waters serve a ward whose tram rides past jizo statues, shitamachi shotengai arcades, temple gates, and small workshops offer the most intimate and human-scaled transit experience in the Tokyo metropolitan area, creating a corridor of old Tokyo neighborhood life visible from the tram windows. The Toden Arakawa Line's romantic anachronism, the ward's artisan heritage, and the warm mineral waters of the neighborhood onsen give Arakawa Ward a distinctly Tokyo shitamachi personality where the city's working past remains visibly present in the textures of everyday life.

Insider tip — Arakawa Ward is one of the smallest and most densely populated wards in Tokyo, named for the river that marks its eastern boundary, and its old shitamachi atmosphere is palpable in the narrow streets around the Nippori textile district. The neighbourhood sento taps the signature dark, saline thermal water of the Kanto plain, delivering a deeply warming soak that has anchored community life here for decades. The Arakawa Line — Tokyo's last remaining streetcar — runs nearby, and a tram ride through the ward is an atmospheric complement to a bath visit.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °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).