Semi Onsen Seminoyu

瀬見温泉共同浴場せみの湯せみおんせんきょうどうよくじょうせみのゆ

A public bath with a coin-slot door, indoor tubs and a steam room

Mark it and it goes on your passport, with 20 drops. What's the passport?

Can I go?

Day visit ·

Yes

Mon06:00–09:00, 12:00–20:00

Tue06:00–09:00, 12:00–20:00

Wed06:00–09:00, 12:00–20:00

Thu06:00–09:00, 12:00–20:00

Fri06:00–09:00, 12:00–20:00

Sat06:00–09:00, 12:00–20:00

Sun06:00–20:00

Most days it's closed from 9:00 to noon for cleaning (not on Sundays), and unscheduled closures happen occasionally.

¥500

Entry is by a coin-operated door: bring five 100-yen coins (500 yen total). There is no change machine on site.

About

Semi Onsen's public bathhouse packs two indoor tubs at different temperatures, a small open-air bath, and an old-style steam room heated by onsen vapor into one compact building. The water is barely diluted, so it stays close to spring strength, with a faint trace of sulfur. A covered footbath out front is free to use, with space nearby to boil onsen eggs. You get in through a coin-operated door rather than a front desk, and there's no shampoo or soap provided, so bring your own. It sits in Semi Onsen, a small hot spring town tied to the legend of Yoshitsune (義経) and Benkei (弁慶).

The baths

Special here

Foot Bath. Sit on the edge and soak your feet.
Steam Sauna. A room of hot steam instead of dry heat.

Baths and water

Yes
OnsenUses natural hot spring water
Yes
Outdoor Bath. Open-air outdoor bath
Yes
Indoor Bath. Enclosed indoor bathing area
Yes
SaunaSauna room of any kind
No
Mixed BathingShared bathing area for all genders

Also here

Washing✕ NoWash stations are provided, but shampoo and body soap are not. Bring your own.

Not known yet: Cold Bath, Private bath to book, Tattoo, Kids, Dining, Towels, Rest Area, and Parking. Been there? Tell us.

Programs1

Yamagata Onsen-do
A prefecture-wide onsen stamp rally across 86 baths in Yamagata, launched in 2026. Collect stamps in all four areas, Murayama, Mogami, Shonai and Okitama, and climb the ranks toward Onsen Master.
Area
Mogami
No.
50
View program