Updated October 2026
Osaka Aquarium Kaiyukan Tickets (2026):
Prices, Hours and Time Slots
The whale-shark tank on the Tempozan waterfront, five minutes from Osakako. The admission moves by date, the entry slot is yours to choose, and one rule changed in June 2026.
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Adult admission
¥2,700–3,200, by date
How long to allow
2–3 hours, one way round
Getting there
Osakako Exit 1, 5 min walk
Booking
15-min slots, 30 days ahead
In short: Osaka Aquarium Kaiyukan tickets do not have one price. The aquarium runs dynamic pricing, so an adult pays somewhere between ¥2,700 and ¥3,200 depending on the date, a school-age child ¥1,400–1,650, an infant of 3 and over ¥700–800, and under-3s nothing. Buy the official date-and-time e-ticket, which specifies entry in 15-minute slots and opens about 30 days before your visit — the ticket window sells same-day only, so that is also how you skip the queue. Allow two to three hours and plan it as one unbroken block: re-entry ended on 15 June 2026. It is a five-minute walk from Exit 1 at Osakako on the Chuo Line, and it is not covered by the Osaka Amazing Pass. All read off kaiyukan.com on 22 October 2026.
What Is Osaka Aquarium Kaiyukan?
Kaiyukan is the aquarium at Tempozan, on the water in Osaka's Minato ward, and it is built around one idea: a walk through the habitats of the Pacific Rim, with the enormous Pacific tank and its whale sharks at the centre of it. The operator puts the collection at roughly 620 species and 30,000 creatures, which includes the Antarctic penguins most visitors come out talking about.
Three things make the ticket worth thinking about rather than just buying. The price moves with the date, so there is a cheap version of this visit and an expensive one. The entry time is specified in 15-minute slots, which is the only real control you have over the crowd. And since June 2026 you cannot leave and come back, so the visit has to be planned as one block rather than split around lunch. The rest of this page is those three decisions and the numbers behind them.
How Much Are Osaka Aquarium Kaiyukan Tickets?
Bands, not prices — because Kaiyukan sets admission per date. The operator's own wording is that it has introduced 価格変動制, dynamic pricing, to put tickets at a "fair price" matching demand. These are the published bands:
| Who | Admission | Notes |
|---|---|---|
| Adult (大人) — high-school age or 16 and over | ¥2,700 – ¥3,200 | The band that moves most. Dates in the top ¥3,200 tier accept bookings from 15:00 only |
| Child (こども) — elementary and junior-high pupils | ¥1,400 – ¥1,650 | Roughly half the adult rate across the band |
| Infant (幼児) — 3 and over | ¥700 – ¥800 | A quarter of the adult rate |
| 2 and under | Free | No ticket needed |
| Disability certificate holder | Half the fee above | Plus one free carer ticket. A booklet, the Mirairo ID app or My Number Portal all count as proof |
Bands read off kaiyukan.com on 22 October 2026 — the group-booking page is the one that prints them as text, while the main ticket page shows the exact figure only once you pick a date on its calendar. The operator adds two notes worth knowing: dates in the ¥3,200 adult tier accept reservations from 15:00 only, and dates in a ¥3,500 tier accept no reservations at all. Subject to change — confirm your own date before you buy. For the admissions we track across the rest of Japan, each with its own check date, see our Japan attraction ticket prices table.
Which Kaiyukan Ticket Should You Buy?
Buy a date-and-time e-ticket if…
You are going at a weekend, in a holiday period, or at all if you can plan it. The operator's own e-ticket specifies your entry time in 15-minute units and goes on sale from about 30 days before your visit date, and its stated purpose is that you walk in rather than queue to buy. Read on 22 October 2026.
Go late in the day if…
You want it quieter and you want it cheaper. From 17:00 the lighting and music change for the evening programme, and on a 20:00-closing day the last admission is 19:00. Dates in the top ¥3,200 adult tier only accept reservations from 15:00, so the busiest days push you towards the better half of them anyway. Checked 22 October 2026.
Buy a combo if…
Your day is the whole Tempozan waterfront rather than the tank. The aquarium's own set tickets add the Santa Maria harbour cruise, the Captain Line shuttle to Universal City, or LEGOLAND next door. Note what is not on that list: the Tempozan Giant Ferris Wheel is a separate operator, so there is no official aquarium-and-wheel ticket.
When Is Kaiyukan Open?
There is no fixed timetable, and that is the operator's own position rather than an evasion: opening hours sit on the same calendar as the prices, published per date, and the site asks you to check your own day. The shape to expect is a 10:00 opening and a 20:00 close, with last admission an hour before — the aquarium's evening programme page gives 17:00–20:00 with last admission at 19:00 and notes that hours change by season. Closing days are a small number of dates in January and February.
The 17:00 mark is worth knowing for its own sake. From then the lighting and music change for the evening programme, turning the same tanks into something closer to a night dive — the same ticket, a quieter building, and the half of the day the price calendar steers you towards on its busiest dates. Hours read on 22 October 2026.
How to Book Osaka Aquarium Kaiyukan Tickets
Check your date on the price calendar before anything else
Kaiyukan runs dynamic pricing — 価格変動制 in its own words — so the admission is set per date to match demand. There is no single figure to look up: the adult band runs ¥2,700 to ¥3,200, and the operator also notes a ¥3,200 tier that only takes bookings from 15:00 and a ¥3,500 tier that takes none at all. Your date decides which. Read on 22 October 2026.
Pick an entry time, not just a day
The official e-ticket is a date-and-time ticket with 15-minute entry slots. That is the lever you have over the crowd: a mid-morning weekend slot is the busiest thing in the building, and a late-afternoon one is a different visit entirely.
Book from about 30 days out
The operator states that e-tickets go on sale from roughly 30 days before your visit date, and that the window sells same-day tickets only. So there is a real booking window here — not the two-week midnight scramble a timed Tokyo deck demands, but far from unlimited either.
Use a reseller if you want an English checkout or a foreign card
The official e-ticket system is Japanese-first. Klook's listing is the English-language route to the same admission, taking a foreign card and giving you a code to scan — and it is also where the combo tickets and the Osaka Amazing Pass bundle sit in one place. Confirm the cancellation window and whether your listing is date-specified before you pay, because both are set per listing.
Plan to stay inside — re-entry has ended
This is the rule most third-party guides have not caught up with. Kaiyukan ended re-entry on 15 June 2026, stating that it wanted to keep visitor numbers steady within each time slot. Lunch at the Tempozan Marketplace and a second lap afterwards is no longer an option: one entry, one visit. Read on 22 October 2026.
What Can You Combine Kaiyukan With?
The aquarium sells official set tickets for exactly three things. Prices for all of them sit on the same date calendar as the admission, so there is no fixed figure to quote:
| Set ticket | What it adds | Worth knowing |
|---|---|---|
| Santa Maria set ticket | Admission plus the sailing-ship cruise around Osaka Harbour — about 45 minutes, boarding any day cruise on the hour | Weather and sea dependent, and Santa Maria has a maintenance closure from 13 January to 6 February |
| Captain Line set ticket | Admission plus the shuttle boat to Universal City Port — about a 10-minute crossing | The link between the aquarium and Universal Studios Japan that skips the subway |
| LEGOLAND Discovery Center Osaka set ticket | Admission plus the indoor LEGO attraction, which is in the same Tempozan complex | LEGOLAND does not admit adults-only or children-only groups |
Note what is not on that list. The Tempozan Giant Ferris Wheel — 112.5 metres above the ground and one of the largest in the world, in the same Harbor Village as the aquarium — is run by a separate operator, so there is no official aquarium-and-wheel combination. Buy that ticket on the day. The Captain Line set ticket is the one worth a second look if your trip includes Universal Studios Japan: it is a ten-minute boat crossing from Universal City Port straight to the aquarium's door, which turns two attractions on opposite sides of the water into one afternoon. Our USJ tickets and Express Pass guide covers what the park itself needs booking-wise. Set tickets read off kaiyukan.com on 22 October 2026.
How Do You Get to Kaiyukan?
Osaka Metro's Chuo Line to Osakako Station, which the aquarium calls 大阪港駅（海遊館前） — "Osakako, in front of Kaiyukan" — then Exit 1 and about a five-minute walk. That is the route almost everyone takes, and the Chuo Line runs through the middle of the city, so Hommachi is a direct ride and most other central stations are one change away. Our getting around Osaka guide explains how the Chuo Line fits the rest of the network, and the Osaka Metro pass guide works out whether a day pass beats tapping an IC card on a day like this one.
Three other ways in, all from the operator's own access page: the Captain Line shuttle boat from Universal City Port, which lands at Kaiyukan Nishi Hatoba right at the entrance after about ten minutes; city and Nankai buses to Tempozan, with the Kansai Airport limousine bus also stopping there; and by car, off the Hanshin Expressway at the Tempozan exit, where there are around 1,000 parking spaces. All read on 22 October 2026.
Is Kaiyukan on the Osaka Amazing Pass?
No — and this is the single most expensive thing the Osaka Amazing Pass leaves out. The pass bundles unlimited Osaka Metro and city bus travel with free entry to more than 40 facilities, including Osaka Castle, the Umeda Sky Building observatory, Tsutenkaku and the river cruises. Kaiyukan is not one of them, and neither is Universal Studios Japan. Our Osaka Amazing Pass guide has the full inclusion list and the break-even arithmetic.
The consequence is about scheduling rather than money. A city day that takes in three or four pass facilities is where the pass earns its price; a day built around Kaiyukan is not, so buying a second pass day for it wastes most of what you paid for. The shape that works — and the one our things to do in Osaka guide lays out across a two or three-day trip — is one pass day for the city and one unpassed day for the blockbuster. If you would rather settle both in a single checkout anyway, Klook sells the Amazing Pass with a Kaiyukan ticket attached, which is the only product that does.
Common Questions
1. How much are Osaka Aquarium Kaiyukan tickets?
2. Why does the Kaiyukan ticket price change by date?
3. What are the Osaka Aquarium Kaiyukan opening hours?
4. How long do you need at Kaiyukan?
5. Do you need to book Kaiyukan tickets in advance?
6. What is the quietest time to visit Kaiyukan?
7. How do you get to Osaka Aquarium Kaiyukan?
8. Can you re-enter Kaiyukan if you go out for lunch?
9. Is Kaiyukan included in the Osaka Amazing Pass?
10. Can you combine Kaiyukan with the Tempozan Ferris wheel or the Santa Maria?
11. Is Kaiyukan worth it with small children?
12. Is Kaiyukan a good rainy-day option in Osaka?
Pick the slot, not just the day
The price moves by date and the crowd moves by hour, so the entry time is the decision worth making. Book ahead for an English checkout, a foreign card that works, and a code to scan instead of a window queue — and check the cancellation window shown for your own date before you pay.