
Enjoy the Lazy River and Water Slides Until Evening
About this spot
Operating from July 4, 2026 (Saturday) through September 27, 2026 (Sunday), this is Tokyo Summerland's signature outdoor leisure pool in Akiruno City. The approximately 650-meter-long lazy river "Great Journey" is enjoyable even just floating along in an inner tube, and with multiple water slides available, it brings screams and smiles for elementary school children through adults. With changing rooms fully equipped, all you need is your change of clothes to enjoy it almost without needing to bring anything else—a delightful point for families. Late September operations shift to weekends primarily with closure days, so confirming your visit date in advance is essential. From noon until evening, this is the climactic part of a day packed with water play.
Season & hours
Name: 東京サマーランド アドベンチャーラグーン(屋外プール)
Date & time: 7/4 (Sat)–9/27 (Sun) 9:00–17:00(平日は10:00–16:00)※9月後半は土日中心営業・休園日あり
Venue: あきる野市・東京サマーランド
Tips
1-day passes are ¥3,600 for adults, ¥3,200 for junior high students, ¥2,600 for elementary school children, and ¥1,900 for toddlers/seniors. Operating hours are 9:00 AM–5:00 PM (10:00 AM–4:00 PM on weekdays), with late September operating primarily on weekends, so it's recommended to check the official website's operational calendar in advance. Secure a poolside spot right after entry, and prepare floats and sunscreen early. Since there are changing rooms in the facility, you won't need to worry about changing clothes for your trip.
Best time to visit
Entering at noon allows you to secure a spot before the peak crowding and enjoy ample playtime until the 5:00 PM closing.
Access & map
Akiruno City • Tokyo Summerland
Model course featuring this spot

2026 Tokyo Summerland Adventure Lagoon (Outdoor Pool) - Full Day Course
Tokyo
Explore features & model courses
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