Kusatsu Onsen Netsunoyu

Updated June 11, 2025

草津温泉 熱乃湯

## Kusatsu Onsen Netsunoyu (熱乃湯): how to watch (or try) Kusatsu’s famous yumomi up close

If you want one place in Kusatsu Onsen where the town’s “how do we cool scorching hot spring water without diluting it?” problem becomes a performance, it’s Kusatsu Onsen Netsunoyu (熱乃湯 / Netsu-no-Yu). The venue sits in the heart of Kusatsu and runs the “Yumomi and Dance” program multiple times daily, plus a short yumomi experience window where visitors can participate. Official Tourist Guide

### Quick facts (for planning)
– Name: Kusatsu Onsen Netsunoyu (熱乃湯)
– Address: 〒377-1711 Gunma, Agatsuma District, Kusatsu, Kusatsu 414
– City / area: Kusatsu Onsen, Gunma Prefecture, Japan
– Coordinates: 36.6227067, 138.5963917 (from your dataset)
– Category: Tourist attraction (yumomi show venue)
– Admission (show): Adults 700 yen (tax incl.), elementary school students 350 yen (tax incl.)
– Yumomi experience fee: 300 yen (elementary school and older)

> Accuracy note: Pricing, schedules, and special performances can change; the most current details are on the Netsunoyu pages run by the Kusatsu Onsen Tourism Association.

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## What “yumomi” is — and why Kusatsu kept the ritual
Kusatsu’s hot spring sources run extremely hot. The traditional solution was not to add cold water (which would dilute the mineral content), but to cool it by stirring/kneading the water with long wooden boards. This process is yumomi.

On the Netsunoyu history page, the tourism association explains yumomi as using boards (about 180 cm) to knead the water down to a usable temperature, with the added idea that the motion “softens” the water and functions as a kind of warm-up before bathing.

The same page also describes an older communal bathing practice called “dentō-yu” (traditional bath), where yumomi preceded short, timed group bathing under a bathmaster’s call—along with the custom of pouring many buckets of hot spring water over the head to prevent overheating.

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## The “Yumomi and Dance” show: schedule, seasons, and what you’ll actually see
Netsunoyu runs a structured program called 「湯もみと踊り」 (Yumomi and Dance). The show page lists:
– Daily operation year-round, with six performances per day
– Standard performance times: 9:30 / 10:00 / 10:30 and 15:30 / 16:00 / 16:30
– Winter schedule note: Dec 1, 2025 – Feb 28, 2026 mornings shift to 10:00 / 10:30 / 11:00 (afternoons remain 15:30 / 16:00 / 16:30).
– Temporary cancellations may happen due to maintenance or events (the site explicitly flags this and advises checking/asking).

The program outline on the show page includes:
1) Opening movie
2) Dance to Kusatsu-bushi
3) Yumomi demonstration (also tied to Kusatsu-bushi)
4) Combined dance and yumomi to Kusatsu Yumomi Uta

### Practical viewing tips (based on the official format)
– Aim for a morning show if you want the rest of the day for baths, walking, and food.
– Treat the show as culture + technique, not “just entertainment.” The point is the method: cooling without dilution, with rhythm and song anchored in local folk tradition.
– If you’re traveling with kids: the venue’s pricing explicitly distinguishes elementary school students for the show ticket.

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## Want to try it yourself? The yumomi experience window
On the Netsunoyu main page, the tourism association lists a yumomi experience window:
– Time: 11:30–12:50
– Fee: 300 yen (elementary school and older)
– The page states that during this window, reception handles yumomi experience participation.

Because the show page separately warns about temporary suspensions due to maintenance/events, it’s smart to treat the experience as “available unless otherwise posted.”

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## Where Netsunoyu sits in Kusatsu’s layout (and why that matters)
The Gunma Prefecture tourism guide notes that Netsunoyu stands right in front of Yubatake, Kusatsu’s main hot spring source. Official Tourist Guide
That location is useful because it means Netsunoyu pairs naturally with:
– a short walk around the central hot spring area (steam, channels, and viewpoints),
– and then a bathhouse visit later, once you’ve learned why the water is handled the way it is.

> Outdated-data flag: the Gunma tourism page is labeled “Last updated: December 21, 2020,” so treat its descriptive details as generally reliable context, but verify operational specifics (times/prices) on the Netsunoyu site. Official Tourist Guide

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## Getting there: on-foot access that’s actually easy
The Netsunoyu access page lists straightforward walking times:
– ~5 minutes on foot from Kusatsu Onsen Bus Terminal
– ~5 minutes from Yubatake Tourist Parking
– ~10 minutes from Sainokawara Park Parking

This is one of those attractions where planning for a car doesn’t help much once you’re in town—walking is the default.

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## A short, honest take on whether it’s “worth it”
Your dataset’s review snippet (“interesting, but not something I would see more than once…”) is a common pattern for short cultural demonstrations: the value isn’t repeat novelty; it’s context.

Netsunoyu tends to land best if you:
– use it as a primer before bathing (you’ll notice water channels, steam, and the Yubatake area differently afterward), and
– time it intentionally (show → lunch → bath), rather than squeezing it between errands.

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## Inclusivity and etiquette notes
– The show is a seated cultural demonstration; if you’re sensitive to heat/steam in enclosed spaces, choose a seat with airflow and take breaks as needed.
– Kusatsu is popular year-round; consider weekday mornings if you prefer less crowded indoor spaces.
– For families: the ticket categories explicitly include elementary school students, but the site doesn’t list age cutoffs beyond that category—plan based on your child’s comfort with indoor performances.

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## Visitor checklist (copy/paste)
– ✅ Confirm today’s show times (watch for maintenance/event notices)
– ✅ Bring cash for 700 yen adult / 350 yen elementary tickets (and 300 yen if doing the experience)
– ✅ Arrive early enough to queue and pick seats
– ✅ Pair it with a walk around the central hot spring area (Netsunoyu is in front of Yubatake) Official Tourist Guide
– ✅ If driving, choose parking based on the walking times listed on the access page

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