10 Water Parks In & Around Tokyo For Summer 2025

Too hot outside? Quickly get yourself (and the family) to a water park where you can have a cool “splashing” time!

“I’m bored”, your kids whine on a scorching hot Japanese summer day, while you’re sitting underneath the air conditioner. Maybe you’re getting a little bored, too, from staying indoors all day. But what is there to do when the heat is just too unbearable? While it might not be the best time to take your family out to the park or go wandering along the streets of Tokyo, there is absolutely no better time than now to visit the water parks.

Featuring extravagant pools, thrilling slides and rides, beautiful fountains and impressive man-made waterfalls, a water park is the perfect summer outdoor day trip for both adults and kids. If you’re ready for a bit of adventure and a splash in the cool water, check out Savvy Tokyo’s five best water park picks in and around Tokyo. Grab your sunscreen and swimsuit and move away from the air conditioner…

1. Yomiuri Land Water Amusement Island (WAI)

Get a taste of the South Pacific right in the middle of Tokyo! Considered one of the best water parks in the city, it’s the perfect escape from the summer heat—think crystal-clear water, swaying palm trees and beach-like shorelines. Three exciting water slides promise unforgettable summer memories, while a variety of pools—from casual dip zones to full-size diving pools—offer something for everyone. In the evening, the atmosphere shifts: adults can unwind in the night pools, soaking in the sunset with soft music and mood lighting. To top it all, this mind-blowing experience is just 35 minutes from Shinjuku!

• Address: 4015-1 Yanokuchi, Inagi City, Tokyo (Google Map Link)
• Closest Station: Keio Yomiuriland Station (Keio Sagamihara Line)
• Ticket Price: Entry fee varies by day: Adult: ¥3,400-¥4,000; Junior & Senior High School Students: ¥2,700-¥3,200; Elementary Students, Preschoolers (3-5) & Seniors: ¥2,300-¥2,700.
• Opening Hours: Sat, Jun. 28-Mon, Sep. 15, 2025 (Hours vary. Please check their website for more information.)

2. Tokyo Summerland

Make a great family outing to remember and kick start your summer at one of Japan’s biggest tropical theme water parks, located just one hour away from central Tokyo. Indulge in pool paradise at this water park with its multiple outdoor pools, water slides, unique rides, fountains and man-made waterfalls. Featuring water playgrounds for those who want a bit of cool adventure on a hot day. There’s also no need to worry about the weather! Since many of the pool attractions are covered by a large dome, you can still have an amazing time even on a rainy day. At nighttime, the outdoor Adventure Lagoon is beautifully lit up, meaning get your camera out and take multiple photos with different poses. Do it for the gram!

• Address: 600 Kamiyotsugi, Akiruno, Tokyo (Google Map Link)
• Closest Station: Akigawa Station (Itsukaichi line)
• Ticket Price: Entry fee varies by day: General (16-64): ¥2,600-¥3,600; Child (13-15): ¥2,100-¥3,200; Child (7-12): ¥1,500-¥2,600; Child (3-6): ¥1,000-¥1,900.
• Opening Hours: Indoor pools: Sat, Mar. 22-Sun, Oct. 19, 2025; Outdoor pools: Sat, Jul. 5-Mon, Sep. 29, 2025 (Hours vary. Please check their website for more information.)

3. Oiso Long Beach (Kanagawa)

Many hot and sweaty Tokyoites find that traveling to Oiso Long Beach is entirely worth the one-hour journey to deal with the heat and to have fun. Boasting a total of eight pools, including a Kids Water Paradise (slides) and Fountain Children’s Pool, this place is kid-friendly and particularly geared toward young families. Both adults and children will be satisfied with the water attractions, such as the Wave Pool, which has full-fledged waves and a diving pool full of thrills. And if that’s not enough, there’s also a whirlpool jet bath where you can enjoy the scent of the tide and feel the refreshing sea breeze. Oiso Long Beach is truly a place that offers more fun than you can handle!

• Address: 546 Kokufuhongo, Oiso-machi, Naka-gun, Kanagawa Prefecture (Google Map Link)
• Closest Station: Oiso Station (Tokaido line), a direct shuttle bus is available from the station.
• Ticket Price: Entry fee: Adult: ¥4,400-¥4,900; Junior & Senior High School Students: ¥3,000-¥3,300; Elementary Students & Seniors (65+): ¥2,400-¥2,600; Preschoolers (3+): ¥1,200-¥1,400. Late entry tickets (from 2 p.m.) are sold at a discounted price.
• Opening Hours: Sat, Jul. 5-Mon, Sep. 15, 2025. 9 a.m.-5 p.m.

4. Tobu Super Pool (Saitama)

For a guaranteed fun-packed family day trip, you can’t go wrong with visiting Tobu Zoo in Saitama Prefecture. Not only can you enjoy interacting with the animals at the zoo, but there is also a leisure pool complex (open only during the summer) which includes a pool with waves, a pool with slides and even a pool just for kids. Head to the “Jabu Jabu Adventure” area where you and your children can enjoy plenty of exhilarating attractions like the rotating slide. Also, don’t miss out on the bucket splash attraction, where huge water-filled buckets will tip every five minutes! And when it’s time to regain your energy, have a delicious, quick bite at the restaurant located in the Whirlpool area.

• Address: 425 Tsumetagaya, Shiraoka, Saitama Prefecture (Google Map Link)
• Closest Station: Tobu Dobutsu Koen Station (Tobu Skytree, Tobu Nikko, Tobu Isesaki lines)
• Ticket Price: Entry fee varies by day: Adult (18+): ¥3,400-¥3,700; Child (12-17): ¥2,600-¥2,800; Child (3-11): ¥1,700-¥1,900; Seniors (60+): ¥2,600-¥2,900.
• Opening Hours: Sat, Jun. 28–Sun, Jul. 13, 2025: Weekends only; Sat, Jul. 19–Sun, Aug. 31, 2025: Open daily; Sat, Sep. 6–Mon, Sep. 15, 2025: Weekends & public holidays only (Hours vary. Please check their website for more information.)

5. Seibuen Yuenchi Pool (Saitama)

© Photo by Seibuen Yuenchi Pool

Just 50 minutes from Shinjuku by train, have the time of your life with your family at the very popular Seibuen Yuenchi Pool. Open only during the summer, adults and children alike can enjoy the four spectacular pools, including a wave pool, lazy river, boat pool and children’s pool. Also, get a serious adrenaline rush on the unpredictable, exhilarating torrent slides with sharp curves and tremendous speed. For the foodies, have a taste of some Japanese summer foods such as yakisoba and kakigori while you take a mini break from the pool. Surrender yourself to the sweltering heat and get ready to have the best summer ever at Seibuen Yuenchi Pool!

• Address: 2964 Yamaguchi, Tokorozawa, Saitama Prefecture (Google Map Link)
• Closest Station: Yuenchi-Nishi Station (Yamaguchi Line)
• Ticket Price: Pool entry: Adult: ¥3,200 (Pool and Leisure Park entry ¥5,100). Child: ¥2,200 (¥3,800). Prices will increase by ¥300 during the Obon holiday period (Sat, Aug. 9-Sun, Aug. 17).
• Opening Hours: Sat, Jun. 28-Mon, Sep. 15, 2025 (Hours vary. Please check their website for more information.)

6. Kawagoe Aquatic Park (Saitama)

Kawagoe Aquatic Park, also known as Kawagoe Suijo Park Pool, is one of Saitama’s most popular summer spots for families looking to cool down without the crowds of the big-name parks. It’s packed with fun attractions for all ages—hovering large-ship play structures, colourful curvy slides, a thrilling wave pool and a graded slope from toddler-friendly depths (0 m) to a deep end of 1.6 m. Plus, its spacious deck, shaded lawn plaza and nearby park trails make it a full-day destination that combines water excitement with family-friendly park ambiance.

• Address: 888 Sugawara, Kawagoe, Saitama Prefecture (Google Map Link)
• Closest Station: Nishi-Kawagoe Station (JR Kawagoe Line)
• Ticket Price: Adults & High School Students: ¥1,100; Elementary/Junior-High Students: ¥300; Family Price (2 Adults & 2 Children): ¥2,500
• Opening Hours: Sat, Jul. 12–Sun, Jul. 13; Sat, Jul. 19–Sun, Aug. 31, 2025; Sat, Sep. 6–Sun, Sep. 7, 2025. 9 a.m.-5 p.m.

7. Sunset Beach Park Pool (Chiba)

This retro-modern pool complex blends sandy beaches, panoramic bay views and dynamic aquatic attractions. It features a 30-meter main pool, wave pool, lazy river, waterfall pool, kiddie pool and four slides—perfect for sun-soaked family adventures. Comfy paid seating, a beachside café and a connected glamping and BBQ area elevate this from a simple swim spot to a full-on summer retreat. Plus, from August 2–31, the night pool opens with DJs and soft lighting, making it a chill evening escape for date nights or after-hours hangouts with friends.

• Address: 7-1-1 Takahama, Mihama-ku, Chiba-shi, Chiba Prefecture (Google Map Link)
• Closest Station: Inage Kaigan Station (JR Keiyō Line) or Inage Station (JR Sōbu Line)
• Ticket Price: Adult: ¥2,000; High School: ¥1,000; Elementary/Junior-High: ¥500; Preschoolers: ¥200; Under 3: Free!
• Opening Hours: Sat, Jul. 12–Tue, Sep. 23, 2025. 10 a.m.–5 p.m.; Night Pool: Open until 8 p.m.

8. Onjuku Water Park (Chiba)

Just steps from Chiba’s Pacific coastline, Onjuku Water Park offers an exciting mix of aquatic fun and ocean breeze. Featuring a 127-meter lazy river, a thrilling 74-meter river slide, a multi-purpose pool and a children’s pool, it caters to all ages and levels of adventure. It’s the kind of spot where you can float, swim and play all day long, and for a pretty affordable price when compared to the other locations on this list. Easy extras like one-touch rental tents make it simple to set up a home base, and with the family-friendly discounts, you’ll be bringing the family back again in no time!

• Address: 2208 Suga, Onjuku-machi, Isumi-gun, Chiba Prefecture (Google Map Link)
• Closest Station: Onjuku Station (JR Sotobo Line)
• Ticket Price: Adults & High School Students: ¥1,200; Child & Seniors (70+): ¥500; Discounted Entry (from 3 p.m.): Adults ¥500; Child: ¥300
• Opening Hours: Sat, Jul. 19–Sun, Aug. 31, 2025. 9 a.m. to 5 p.m.

9. Hasunuma Water Garden (Chiba)

This spacious water park, located within the greenery of Hasunuma Seaside Park, features a variety of pools for all ages, including a wave pool, a lazy river and a dedicated children’s pool. If you’re up for a thrill, don’t miss their most exciting attraction—the Splash Shaker. This dynamic ride seats up to three people in a giant raft and launches you from 20 meters up with a heart-racing 90-degree drop, followed by wild side-to-side swings in the twist zone. Entry into this park is a bit more affordable due to attraction tickets being sold separately per ride (¥300–¥600). You can save a bit more by purchasing a discount voucher book (¥1000), which gives you ¥1,200 worth of tickets. Ride tickets can be used like cash at participating attractions (1 ticket = ¥100). They are available at the special kiosks inside the park.

• Address: Hasunuma Seaside Park, 1-1 Hasunuma, Narashino City, Chiba Prefecture (Google Map Link)
• Closest Station: Hasunuma Station (Keisei Chiba Line)
• Ticket Price: Entry only: Adults: ¥1,900; High School Students: ¥1,100; Junior High Students: ¥450; Elementary Students: ¥400; Preschool: ¥200; Under 4: Free! (Attraction tickets range from ¥300 to ¥600 each ride.)
• Opening Hours: Sat, Jul. 5–Tue, Sep. 23, 2025. 9 a.m. to 5 p.m.

10. Futtsu Park Jumbo Pool (Chiba)

© Photo by Pixta: bluet

Futtsu Park’s Jumbo Pool offers an expansive water play space inside the spacious grounds of Cape Futtsu Seaside Park in Chiba. The park overlooks Tokyo Bay, and on clear days, you can even see Mt. Fuji from the nearby Meiji Centennial Observation Tower! The water park itself features a massive wave pool, a 90-meter-long lazy river and large swim zones for splashing or relaxing. Families will appreciate the dedicated children’s pool and multiple play areas throughout. For adrenaline seekers, there are three exciting slides to conquer: the Tube Slider (50m long, 9m high), which sends you zipping down a narrow enclosed pipe at high speed; the Straight Slider (53m long, 12m high), for a thrilling drop straight into the water; and the Spiral Slider (120m long, 13m high), where you’ll twist and turn through a wide pipe in exhilarating spirals.

• Address: 2280 Futtsu, Futtsu‑shi, Chiba Prefecture (Google Map Link)
• Closest Station: Aohori Station (JR Uchibō Line)
• Ticket Price: Adult: ¥1,190; High School Student: ¥850; Elementary/Junior-High: ¥420; Under 3 & Seniors (65+): Free!
• Opening Hours: Sat, Jul. 19–Sun, Aug. 31, 2025. 9 a.m.–5 p.m.

Please note: Tattoos, including fake ones, are not permitted at any of the water parks above. Wearing full-coverage swimwear is a way to get around this. However, you cannot reveal the ink at any point inside the park, including the changing rooms, or else you may be asked to leave without a refund.

Do any of these water parks in and around Tokyo entice you to pack your swimsuits, jump into the pool and enjoy a splashy summer day out? Let us know which one and if you have any other water park recommendations in the comments section down below!

This article has been updated with the latest information for 2025.