Osaka Aquarium Kaiyukan
Museum Large Osaka aquarium featuring Pacific marine ecosystems
Large aquarium in Osaka’s Tempozan Harbor Village, famed for its central Pacific tank and whale sharks; visitors watch large pelagics, touch pools and rotating exhibits.
Osaka Aquarium Kaiyukan is a major public aquarium in Osaka’s harbour area, known for its large tanks and immersive displays representing Pacific Rim marine environments; it opened in 1990.
The exhibit design centers on a very large central Pacific Ocean tank viewed through multiple levels, surrounded by a ring of thematic tanks that interpret 15 or so distinct Pacific ecosystems. The site has been notable for exhibiting large pelagic species and for immersive walk-through circulation that brings visitors close to large displays.
Opened in 1990 as part of the Tempozan Harbour Village redevelopment, the aquarium was designed to showcase marine life from around the Pacific Rim and has hosted successive husbandry programs for large marine species.
The aquarium sits on Osaka Bay in the Tempozan area of Osaka, close to the port and other family-oriented attractions in the Minato Ward.
- Location and visiting tips: The aquarium is located at Tempozan Harbor Village in Osaka's Minato Ward and is one of the world's larger public aquaria by total tank volume; check feeding and presentation schedules for timed displays.
What to See #
- Pacific Ocean tank: The central Pacific Ocean tank is the aquarium's signature exhibit, designed as a deep viewing column representing an open-ocean habitat and historically displayed large pelagic species.
- Themed habitat tanks: A sequence of tanks and habitats arranged around the central tank represents different Pacific Rim ecosystems from the Aleutian Islands to Antarctic waters.
How to Get to Osaka Aquarium Kaiyukan #
Osaka Aquarium Kaiyukan is in the Tempozan/Osaka Bay area. Take the Osaka Metro Chuo Line to Osakako Station - the aquarium is about a 5-10 minute walk from the station. From JR Osaka Station take the Osaka Loop Line to Bentencho and change to the Chuo Line, or from Namba board the Chuo Line direct; from Kansai Airport you can reach Namba by train then transfer to the Chuo Line.
Tips for Visiting Osaka Aquarium Kaiyukan #
- Arrive just after opening or late afternoon and head directly to the Pacific Ocean (central) tank that holds the whale shark - doing the central tank early/first substantially reduces time spent in queues.
- Use Osakako Station (Chuo Line) and walk via Tempozan Harbor Village; the aquarium's main entrance is signed from the Tempozan Ferris Wheel area, which helps avoid the densest crowds at the marina.
- Buy timed-entry or combo tickets online ahead of weekends and school holidays; weekday late afternoons are typically quieter than mid-day.
Best Time to Visit Osaka Aquarium Kaiyukan #
For Osaka Aquarium Kaiyukan, choose weekday mornings outside national holidays to minimize crowds.
Weather & Climate near Osaka Aquarium Kaiyukan #
Osaka Aquarium Kaiyukan's climate is classified as Humid Subtropical - Humid Subtropical climate with hot summers (peaking in August) and cold winters (coldest in January). Temperatures range from 1°C to 32°C. Abundant rainfall (1298 mm/year), wettest in June.
January
January is the coolest month with highs of 9°C and lows of 1°C. Moderate rainfall (38 mm) and mostly overcast skies.
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February
February is cold with highs of 9°C and lows of 1°C. Moderate rainfall (55 mm) and mostly overcast skies.
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March
March is cold with highs of 13°C and lows of 4°C. Regular rainfall (95 mm) and partly cloudy skies.
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April
April is cool with highs of 19°C and lows of 9°C. Significant rainfall (129 mm) and partly cloudy skies.
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May
May is mild with highs of 24°C and lows of 14°C. Significant rainfall (139 mm) and partly cloudy skies.
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June
June is mild with highs of 26°C and lows of 18°C. The wettest month with heavy rain (209 mm) and mostly overcast skies.
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July
July is warm with muggy conditions (dew point 22°C). Significant rainfall (152 mm) and mostly overcast skies.
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August
August is the hottest month, feeling like 32°C with oppressive humidity. Regular rainfall (95 mm) and partly cloudy skies.
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September
September is mild with highs of 28°C and lows of 20°C. Significant rainfall (177 mm) and mostly overcast skies.
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October
October is mild with highs of 22°C and lows of 14°C. Significant rainfall (109 mm) and partly cloudy skies.
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November
November is cool with highs of 17°C and lows of 8°C. Moderate rainfall (67 mm) and partly cloudy skies.
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December
December is cold with highs of 12°C and lows of 4°C. Moderate rainfall (33 mm) and partly cloudy skies.
