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Lake Toya
Photo: T DMY · CC BY 3.0

See · HokkaidoWeb-checked · Oct ’26

Lake Toya

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A caldera lake about 43 km around, formed by an eruption 110,000 years ago.

Four islands called Nakajima sit mid-lake, and in summer the sightseeing boat lets you step ashore on Oshima.

MoreWhat kind of place

Lake Toya formed when water filled a caldera about 10 km across, left by an eruption roughly 110,000 years ago. The four Nakajima islands are lava domes pushed up from the lake bed by an eruption about 50,000 years ago.

Today the area is a UNESCO Global Geopark, with Mount Usu, which erupted in 2000, to the south of the lake.

With kidsThe part that matters

Stepping ashore on Oshima, one of the Nakajima islands, is the main event of a lake day in summer. Boats leave the hot-spring town every 30 minutes, so you can get off and take a later one.

The 45-minute forest course took one 5-year-old about 60 minutes along soft wood-chip paths, and the pier sells 100-yen fish food.

On summer nights fireworks go up over the lake, and a 2-year-old watched them open-mouthed from a hotel window. Nakajima's trails suit children who walk; a baby is better carried there.

By age0-1 / 2-3 / 4-6
  • Ages 0-1A family with a 1-year-old took a stroller aboard the boat in 2023, over an entrance step and about two stairs. The forest trails on Nakajima are uneven, so a baby carrier suits the island better than a stroller.
  • Ages 2-3A guided canoe tour on the lake worked for a 3-year-old in July 2023: one family feared their 3-year-old would be scared, yet she ended up wanting to paddle herself. That operator, Binocolo, accepted children from age 3 at that time, and shoes that can get wet are the advice.
  • Ages 4-6Nakajima suits this age when children enjoy walking: a 5-year-old stayed about two and a half hours and left delighted. A 6-year-old, though, asked to turn back within 10 minutes of setting out for a wind cave (a 30 to 40 minute round trip), so choose a shorter course if your child tires quickly.
By weatherRain, heat, cold
  • Rainy dayFireworks go ahead in the rain, though unstable wind can cancel them. For the daytime, Hokkaido's tourism site tags the Toyako Visitor Center, which shows the lake's nature in panels and specimens, as good with children and enjoyable in the rain.
  • Hot dayBring your own water and hats for the island trails. Around town, children can play barefoot on warm days in the fountain plaza's pebble channel set in the grass; the fountain ran from April 19 to September 30 in 2025, and the 2026 season is not posted.
  • Cold dayIn winter the boat still sails, hourly from 9:00 to 16:00 for about 45 minutes, but it skips Nakajima. Part of the deck was frozen on one winter sailing reported in 2019 and four or five people fell, so watch your footing on deck.
Family checks
Tap a mark for details.
Not yet checked: 7

Lost-child support, Diaper disposal bin, Kids' toilet seat & step stool, Official family-friendly certification, High chair, Kids' menu, Best-fit ages (guide)

* Not at this spot — nearest options (5)
  • Elevator: not at the spot itself. We read 100 pages and found 1 nearby instead.
  • Stroller friendly: not at the spot itself. We read 100 pages and found 3 nearby instead.
    • The forest walk on Nakajima is hard with a stroller; a baby carrier is better, while a short walk by the lake or in the building works with a stroller. source
    • The boat has an entrance step and about two stairs, but a stroller could board in 2023, and the inside was spacious. source
    • The Nakajima trails are not flat, so a stroller will not work and a baby carrier is needed. source
  • Nursing space: not at the spot itself. We read 100 pages and found 1 nearby instead.
    • The Nakajima building has no nursing room. source
  • Family restroom: not at the spot itself. We read 100 pages and found 2 nearby instead.
    • The Nakajima building has a multipurpose (accessible) restroom, and the toilets are new and clean. source
  • English support: not at the spot itself. We read 100 pages and found 3 nearby instead.

Green = we confirmed it. Gray = not checked yet. Gray with a line through = the place does not have it.

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Where it is

The lake lies across Toyako Town and Sobetsu Town and has no street number; the hot-spring town side uses Toyako Onsen addresses.source

Before you go

Sources and evidence (46)
  • The Nakajima building has no nursing room.source2026-09-25
  • The Nakajima building has a multipurpose (accessible) restroom, and the toilets are new and clean.source2026-09-25
  • The forest walk on Nakajima is hard with a stroller; a baby carrier is better, while a short walk by the lake or in the building works with a stroller.source2026-09-25
  • The boat has an entrance step and about two stairs, but a stroller could board in 2023, and the inside was spacious.source2023-09-17
  • The Nakajima trails are not flat, so a stroller will not work and a baby carrier is needed.source2023-09-17
  • The lakeshore is outdoors and open around the clock all year, but visitors are advised to avoid it at night because of rocks and the nearby water.source2026-10-12
  • The lake was named a World Geopark in 2009, the first in Japan; this is not a child-rearing or barrier-free certification.source2026-10-12
  • The Japanese page lists boat tickets at 1,800 yen for adults and 900 yen for elementary-school children.source2026-10-12
  • The English page lists 1,600 yen for adults and 800 yen for elementary-school children, which differs from the Japanese page.source2026-10-12
  • Entering the lakeside scenic forest is free, but the Naka-Toya campground, Raimujin lodge, the forest museum and the boat cost money.source2026-10-12
  • Infants ride free, one per adult; the age limit is not stated.source2026-10-12
  • A September 2026 blog post also reports 1,800 yen for adults and 900 yen for elementary-school children.source2026-09-25
  • In summer (late April to the end of October) boats run from 8:30 to 16:30 every 30 minutes.source2026-10-12
  • Staying aboard takes about 50 minutes; getting off at Nakajima and taking a later boat takes about 80 minutes.source2026-10-12
  • The longest trail course is 7.6 km and takes about 3 hours, so the entrance gate closes at 14:30 (14:00 in October).source2026-10-12
  • Web tickets must be exchanged for paper tickets at the window at least 10 minutes before departure.source2026-10-12
  • The lake lies across Toyako Town and Sobetsu Town and has no street number; the hot-spring town side uses Toyako Onsen addresses.source2026-10-12
  • Lake Toya's sights are spread widely across five districts: the hot-spring town, Takadai, Tsukiura, Toya and Abuta.source2026-10-12
  • The last sailing time may change depending on sunset.source2026-10-12
  • The Ekimae Pier is behind Hotel Grand Toya.source2026-10-12
  • The fireworks run every night from April 28 to October 31, 2026, at 20:45 for about 20 minutes, at the lakeshore.source2026-10-12
  • The fireworks last 20 minutes, from 20:45 to 21:05.source2026-10-12
  • The fireworks go ahead in the rain but may be canceled when wind direction or speed is unstable.source2026-10-12
  • If the fireworks are canceled because of weather, the fireworks-viewing boat does not sail either.source2026-10-12
  • The Nakajima trails are open every year from April 28 to October 31.source2026-10-12
  • The entrance gate to the trails closes at 14:30, or 14:00 in October.source2026-10-12
  • The daytime Nakajima boat boards at the Ekimae Pier of Toyako Kisen.source2026-10-12
  • The fireworks-viewing boat boards at a different pier, the Head Office pier.source2026-10-12
  • From November to early April the boat does not let passengers land on Nakajima.source2026-10-12
  • Ticks live in the grass; wear long sleeves and long trousers and check clothes and bags after walking.source2026-10-12
  • Walking-trail guidance advises bringing drinking water and a hat.source2026-10-12
  • The Donan Bus from JR Toya Station to Toyako Onsen costs 400 yen one way for adults and takes 26 minutes by timetable; it can be delayed by weather or road conditions.source2026-10-12
  • Buses leave Toya Station 16 times a day (first 8:13, last 19:48); weekends and holidays may run a different timetable. Some buses continue through the hot-spring town beyond Toyako Onsen.source2026-10-12
  • Landing on Nakajima from the boat is possible only from late April to the end of October.source2026-09-25
  • In that season you can still ride the boat, but you cannot go ashore.source2026-09-25
  • Duck boats on the lake cannot reach Nakajima; only the sightseeing boat goes there.source2026-09-25
  • Before walking in the forest, you write your name at the building's desk and receive an entry card.source2026-09-25
  • The forest hiking courses on Nakajima take 45 minutes, 2 hours or 3 hours.source2026-09-25
  • The café in the Nakajima building has a counter and a terrace and serves mostly drinks and light snacks.source2026-09-25
  • There is no toilet in the forest on Nakajima, so use the restroom before you enter.source2026-09-25
  • Before entering the trails you write your name, contact and entry time at the building.source2023-09-17
  • The café has no extensive kids' menu and there is no other shop on the island, so bring baby food for small children.source2023-09-17
  • If you get off at Nakajima, you take the boat 30 minutes later.source2018-06-24
  • Lake Toya's public transport is inconvenient, but there is a lot to see.source2026-10-12
  • One 2013 visitor could get off at Nakajima on earlier sailings but not on the last one.source2013-08-08
  • Many of the sights (the ropeway and others) need a car or taxi.source2013-08-08

Basics

Once you've decided

See places nearby
Nursing spaceNot checked yet
Diaper changing tableNot checked yet
Family restroomNot checked yet
Stroller friendlyNot checked yet
Lost-child supportExtra info — guide onlyNot checked yet
Indoor / outdoorOutdoorThe lakeshore is outdoors and open around the clock all year, but visitors are advised to avoid it at night because of rocks and the nearby water.Web-checkedchecked Oct ’26rinya.maff.go.jp
Diaper disposal binNot checked yet
Kids' toilet seat & step stoolNot checked yet
ElevatorNot checked yet
English supportNot checked yet
Outside food allowedNot checked yet
Official family-friendly certificationExtra info — guide onlyNot checked yetThe lake was named a World Geopark in 2009, the first in Japan; this is not a child-rearing or barrier-free certification.Web-checkedchecked Oct ’26hro.or.jp
High chairNot checked yet
Kids' menuNot checked yet
Best-fit ages (guide)Extra info — guide onlyNot checked yet

Information changes — check the dates above.

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