A Rainy Day in Karuizawa: The Museum and the Hot Spring
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When rain lands on your Karuizawa plans, swap a day of walking for a day spent mostly indoors. There are two candidates: the Hiroshi Senju Museum Karuizawa, for art and architecture at an unhurried pace, and the Hoshino area, which has lunch and a hot spring in one place. Both are reachable without a car. The thing to know first is that the museum closes for a long stretch in winter. The prices and hours below are the current published figures, but they change and facilities close without much notice, so check the official pages before you set out.
Pick one, or do both
On a day of heavy rain, one place is easier. If you want long in front of the paintings, take the museum; if you want lunch and a soak, take the Hoshino area. You can do both, but you will be opening and closing an umbrella at every change.
If you do both, reckon on one to one and a half hours at the museum, an hour for lunch, and one to one and a half hours at the bath, plus travel and waiting. That is our suggested split, not a route we timed on the ground.
The Senju Museum shuts for a long stretch in winter
Hours are 9:30 to 17:00, with last admission at 16:30. Admission is ¥1,500 for adults and ¥1,000 for students; junior high school age and under go free. [Visitor information](https://www.senju-museum.jp/guide/)
It closes on Tuesdays — except when the Tuesday is a public holiday, during Golden Week, and throughout July to September, when it stays open. It also closes for winter from 26 December to the end of February. If you are coming to Karuizawa in winter, check this first.
From the stations it is a taxi: about 10 minutes from Karuizawa, about 5 minutes from Naka-Karuizawa. The board outside the shop tells you how to book a taxi back.
For the Hoshino area, use stop 1 at the north exit of Karuizawa station
A Seibu Kanko bus runs to the Hoshino area from stop 1 at the north exit of JR Karuizawa station, about 20 minutes. Get off at Hoshino Onsen Tombo-no-yu. [Getting to the Hoshino area](https://www.hoshino-area.jp/access/)
From Naka-Karuizawa station it is about a 17-minute walk, or about 5 minutes by taxi. A taxi straight from Karuizawa station takes about 15 minutes. On a wet day the direct bus from the station is the simpler way in.
Harunire Terrace has open-air stretches
Harunire Terrace, in the Hoshino area, is a row of shops along the river. The buildings are linked by decking, but that decking is outdoors — bring an umbrella and shoes you do not mind getting wet.
Even in rain there can be a wait at lunchtime. Leave yourself enough slack to decide whether to eat first or bathe first once you see how busy it is.
Tombo-no-yu runs until 22:00, and the price moves with the season
Tombo-no-yu is open 10:00 to 22:00, with last admission at 21:15 — late enough to arrive after an afternoon elsewhere. [Tombo-no-yu](https://www.hoshino-area.jp/tombo-no-yu/)
The price changes with the season. From April to November, and from 29 December to 3 January, it is ¥1,550 for adults and ¥1,050 for children. From December to March it is ¥1,350 and ¥800. If you are travelling light, a towel set rents for ¥350.
Decide on your bus or train home before you get in the water, and you will not be rushing afterwards.
What both cost, and the winter catch
Doing both, adult admission comes to ¥3,050 from April to November (¥1,500 plus ¥1,550), or ¥2,850 from 1 to 25 December and in March (¥1,500 plus ¥1,350). Food, buses and taxis, and towel hire are on top of that.
But from 26 December to the end of February the museum is closed for winter, so both is not an option in that window. On a wet or snowy midwinter day, the plan tips towards spending it all in the Hoshino area.
Can I do this without a car? +
Yes. The Hoshino area is about 20 minutes by Seibu Kanko bus from stop 1 at the north exit of Karuizawa station, and the museum is about 10 minutes by taxi from Karuizawa or about 5 from Naka-Karuizawa. Do not assume you can walk the whole thing — settle your ride home and how you will call a taxi before you go.
Will I stay more or less dry? +
Inside the museum and the bath, yes. Getting from the station or the bus stop, and moving between the shops at Harunire Terrace, is outdoors. Assume you need the umbrella.
What does doing both cost? +
Adult admission is ¥3,050 from April to November and ¥2,850 from 1 to 25 December and in March. Food, transport and towel hire (¥350) are separate.
Does this work in winter too? +
Not as written. The Hiroshi Senju Museum Karuizawa closes for winter from 26 December to the end of February. In that window the day becomes a Hoshino-area day.