Best Family Day Trip in Fukuoka: Uminonakamichi Seaside Park and Marine World

In Fukuoka’s Higashi Ward, there is a long, narrow sandbar called Uminonakamichi, with Hakata Bay to the south and the Genkai Sea to the north. Sitting on this sandbar is the National Uminonakamichi Seaside Park, which covers about 350 hectares and stretches roughly 6 kilometers from east to west.

For families, the park offers a great mix of children’s play areas, a small zoo where kids can feed and touch animals, seasonal flower fields, and the adjacent Marine World Aquarium. Together, they easily fill a full day for both adults and children. Admission to the park is just 450 yen for adults, while junior high school students and younger enter for free, making it an easy and affordable choice for families.

Let the Kids Burn Off Energy: Free Play Equipment and Children’s Facilities

The main children’s facilities at Uminonakamichi Seaside Park are concentrated around the Children’s Plaza and the Great Lawn area. All are included in the park admission fee, with no extra charge.

The giant trampoline “Kujira-gumo Fuwan Polin is one of the park’s most popular free attractions. It consists of two huge white inflatable trampolines designed for children aged 3 to 12. One of them has been lowered to 1.7 meters and is specially designed for younger children aged 3 to 6. It is also a Universal Design play structure. There is a covered rest area beside the trampolines where parents can sit and watch their children. Note that the trampolines may close on rainy days or when the ground temperature is too high.

The large “Sky Dolphin” playground is located on the Great Lawn and is shaped like a dolphin. It features roller slides, rope bridges, and climbing equipment. This area also follows Universal Design principles, allowing wheelchair users to play together with other children. From the top, you can look out across the park and toward the sea in the distance.

“Mizube no Trim” is best suited to braver upper primary school children. It has 18 water-based obstacle challenges, including rope bridges and wooden crossings. Falling in means you may get wet, which adds to the excitement. Bringing a change of clothes is recommended.

Wonder World is a small amusement area with paid attractions such as go-karts, an SL steam train, battery-powered cars, and a maze. Children must be at least 130 cm tall to drive the go-karts alone; those under 130 cm must ride with someone aged 15 or above. The park also has multipurpose toilets, nursing rooms, and baby-care stations.

Animal Forest: Feed Capybaras and Hold Guinea Pigs

Animal Forest is home to about 500 animals from around 50 species. It is smaller than a typical zoo, but the animals can be viewed from very close up. Capybaras, kangaroos, flamingos, llamas, and miniature horses live in open-style spaces, and some animals can be fed at close range.

The interactive animal house offers a guinea pig lap-holding experience, guided by staff, so even younger children can take part safely.

The park’s squirrel monkey group is one of the largest in Japan. During the breeding season from May to September, visitors may even be able to see newborn baby monkeys. Animal Forest is included in the regular park admission ticket.

Seasonal Flower Fields and Spring 2026 Events

Uminonakamichi Seaside Park has flowers to enjoy throughout the year. In spring, around April, the Flower Hill is covered in blue nemophila, blending beautifully with the sky. Tulips and rapeseed flowers also bloom around the same time. In autumn, around October, the kochia turn red and look especially striking in the soft autumn sunlight. Even in winter, the park has around 150,000 rapeseed plants as well as plum blossoms.

The latest 2026 event is the Early Spring Happy Festa 2026, held from February 7 to March 8. This year’s theme is “Happy Yellow,” inspired by the blooming daffodils — around 30,000 bulbs — and approximately 120 plum trees in the park. Several yellow-themed photo spots will be set up, including windmill flower designs and a “little yellow door” installation.

Families can also join the “Find Happy Yellow” digital quiz game using a smartphone. Participants who answer at least six questions correctly can receive a small gift. During the event, the park’s Play Cafe will offer limited-time yellow-themed drinks and desserts, including hot lemonade for 400 yen and a lemon parfait for 700 yen. The park is closed on Tuesdays during the event period.

The major spring event, “Flower Picnic,” is usually held from late March to mid-May, during which the park typically has no closing days. In summer, from mid-July to the end of August, the Sunshine Pool — one of the largest water parks in western Japan — opens with children’s pools and water slides.

Marine World Uminonakamichi Aquarium

Located right next to the seaside park, Marine World Uminonakamichi is themed around “the seas of Kyushu” and displays around 30,000 marine creatures from about 350 species. The white shell-shaped building has four floors and is one of the leading aquariums in Kyushu. Its indoor setting is especially useful for families with children, making it a comfortable place to spend several hours on rainy, very hot, or very cold days.

Strollers and wheelchairs are available to borrow free of charge inside the aquarium, with a refundable 500 yen deposit.

Must-See Shows and Exhibits

The dolphin and sea lion show takes place in the covered performance pool on the top floor, with Hakata Bay as the backdrop. Each show lasts about 30 minutes. Since the pool is covered, performances are held even on rainy days. On weekdays, there are usually three shows per day, while weekends and public holidays usually have four. Showtimes vary by season, so it is best to check the day’s schedule as soon as you enter. Seats in the front rows may get splashed, so take care with cameras and phones.

One of the stars of the show is Yuki, a short-finned pilot whale that has been kept at the aquarium since 2001. Yuki currently holds the longest domestic rearing record for the species in Japan, and its dynamic performance is especially impressive.

The Open Ocean Tank is 7 meters deep and recreates the Kuroshio waters off southern Kyushu. At scheduled times, the “Iwashi Typhoon” takes place, with thousands of sardines forming a silver spiral under dramatic lighting. Children are usually completely mesmerized in front of the tank.

Kaiju Island was renovated in March 2024. New additions include the Island Stage, where seals can be viewed from 360 degrees, and Penguin Beach, where visitors can see penguins up close. The Penguin Parade and seal show are new programs introduced after the renovation and are suitable for all ages.

Permanent exhibits such as the Kyushu Jellyfish Zone and Kyushu Water Forest are designed around the waters of different parts of Kyushu. Colorful jellyfish drift slowly under the lights, creating a calm, soothing atmosphere that is especially pleasant for families with toddlers in strollers.

About Rilo the Sea Otter

Marine World was once home to Rilo, the only male sea otter in Japan, who was much loved by visitors. Sadly, Rilo passed away on January 4, 2025, at the age of 17. The aquarium now has a memorial display in the former sea otter exhibit area, featuring photos of past sea otters and written memories from the keepers. With Rilo’s passing, Marine World’s sea otter exhibition, which had continued since the aquarium opened in 1989, officially came to an end.

Dining Inside the Aquarium

Restaurant Reilly on the first floor offers seats facing the dolphin pool, allowing guests to watch dolphins swim while they eat. Children’s meal options are also available.

Practical Information

Uminonakamichi Seaside Park

• Address: 18-25 Oaza Saitozaki, Higashi-ku, Fukuoka
• Tel: 092-603-1111
• Opening hours: March to October, 9:30–17:30 / November to February, 9:30–17:00
• Closed: December 31 and January 1; several consecutive days from the first Monday of February; and Tuesdays in certain months. Check the official website for details.
• Admission: Adults aged 15 and above, 450 yen / Seniors aged 65 and above, 210 yen / Junior high school students and younger, free
• Bicycle rental inside the park: 500 yen for 3 hours or 700 yen for a full day. For junior high school students and younger, 300 yen for 3 hours or 400 yen for a full day. Electric-assist bicycles are available only at the West Cycling Center. The park has four bicycle stations and around 1,600 bicycles, including parent-child bikes.
• Parking: 530 yen for standard cars, with more than 2,000 parking spaces
• Note: Park gates accept cash only
• Official website: https://uminaka-park.jp/

Marine World Uminonakamichi Aquarium

• Address: 18-28 Oaza Saitozaki, Higashi-ku, Fukuoka
• Tel: 092-603-0400
• Opening hours: Usually 9:30–17:30 / Golden Week and summer, 9:30–21:00 / December to February, 10:00–17:00. Last admission is one hour before closing.
• Closed: Four consecutive days starting from the third Monday of January each year
• Admission: Adults, 2,500 yen / Seniors aged 65 and above, 2,200 yen / Elementary and junior high school students, 1,200 yen / Children aged 3 and above, 700 yen / Children under 3, free
• Parking: 600 yen for standard cars
• Official website: https://marine-world.jp/

Combo Tickets and Discounts

Marine World and Uminonakamichi Seaside Park offer a combined adult ticket for 2,690 yen. Buying the two tickets separately costs 2,950 yen, so the combo ticket saves 260 yen. It can be purchased online through platforms such as Asoview.

JR Kyushu also offers package tickets that include round-trip train fare and aquarium admission. These can be good value when departing from Hakata Station, so it is worth checking the JR Kyushu website before your trip for the latest options.

How to Get There

JR train, the most common option: From Hakata Station, take the JR Kagoshima Main Line to Kashii Station, then transfer to the JR Kashii Line and get off at Uminonakamichi Station. The whole journey takes about 35 minutes and costs around 480 yen. From the station, the entrances to both the park and aquarium are within walking distance. Strollers can be taken directly onto the train.

UMINAKA Line high-speed boat: Take the boat from Marizon Pier in Momochi or Hakata Pier at Bayside Place to Uminonakamichi Ferry Terminal. The ride takes about 20 minutes, followed by a 5-minute walk. For children, the boat ride itself is part of the fun, but services are limited, so check the timetable in advance.

By car: It takes about 13 minutes from the Island City exit on the Fukuoka Urban Expressway. The park has more than 2,000 parking spaces. For families with babies or toddlers, driving is the most convenient option, as you can keep spare clothes and picnic supplies in the car.

Suggested One-Day Family Itinerary

For the best experience, give Uminonakamichi a full day. Here is a suggested itinerary for families with children.

Morning: Take the JR train and enter the park from Uminonakamichi Station. Start at the Children’s Plaza to enjoy the trampolines and playground equipment while it is still less crowded. Then rent bicycles and head to Animal Forest. If you have toddlers, rent a parent-child bike. The cycling paths are flat and spacious. Walking with a stroller is also possible, but distances are long — around 2 kilometers.

Lunch: Food options inside the park are limited, so it is best to bring rice balls, sandwiches, or other easy picnic food. The Great Lawn is ideal for a picnic, and there are benches and tables throughout the park, so you do not necessarily need to bring a picnic mat.

Afternoon: Head to Marine World Aquarium, about a 5-minute walk from the park’s Uminonakamichi Station entrance. Allow at least 2 to 3 hours. Watch the dolphin show first, then explore the tank exhibits. Restaurant Reilly is a good option for afternoon tea or an early dinner.

Evening: During Golden Week and the summer season, Marine World extends its opening hours until 21:00. The “Night Aquarium” has a completely different atmosphere from daytime, and the jellyfish area is especially beautiful after dark. On regular opening days, leave before 17:00 and take the JR train back to Hakata, which takes about 35 minutes.

Family Travel Tips

• The park is huge, so if you are visiting with children under 3, bring a stroller. The pathways are barrier-free and easy to navigate with a stroller.
• Summer can be very hot, and there is not a lot of shade in the park. Bring hats, sunscreen, and plenty of drinking water.
• Children need to remove their shoes and play barefoot on the trampolines at the Children’s Plaza. There are no shoe lockers, so keep an eye on your shoes to avoid losing them.
• Marine World is comfortable indoors, but the front rows at the performance pool can get splashed. Sit farther back if you do not want to get wet.
• Mizube no Trim comes with a real chance of getting wet, so bring a change of clothes.

Uminonakamichi is only about half an hour from central Fukuoka by car, yet its mix of flower fields, animals, aquarium exhibits, and playgrounds can easily keep the whole family entertained from morning to evening. Come in spring for nemophila, in summer for the water park, in autumn for kochia, and in winter for plum blossoms and daffodils — every season gives you a reason to visit again.