Family × Water · Updated 2026-09-25
Will my child be tall enough for the slides? Published minimum heights for the main slides at these facilities range from 105 cm to 140 cm. Several also have a kids' pool or small slide for younger children.
For: Families with children under about 140 cm
Decide with these criteria
Comparison
| Facility | Water slides | Slide height limits | Kids' pool | Swim diapers |
|---|---|---|---|---|
| Hakone Kowakien YunessunHakone, Kanagawa | The Rockies Splash slide uses warm water and requires riders to be 105 cm or taller. | Not stated in the sources we checked | Pony Lagoon is a kids' pool 30 cm deep with a 1 m-high slide. | Children not yet out of diapers must wear swim diapers under their swimsuit. |
| Nagashima Jumbo SeaKuwana, Mie | About 75,000 m² of pools with 11 types of slides. | Slide minimum heights are 105 cm for the JAPAAAAN Multi-Lane Slider, 120–130 cm for most slides and 140 cm for the Free Fall Slider; the JAPAAAAN Kids Slider lists no height limit and is for preschoolers only. | Spa Kids is for children up to 3rd grade, and the JAPAAAAN Kids Slider is only for preschoolers. | Babies may use the pool if they wear swim diapers. |
| Spa Resort HawaiiansIwaki, Fukushima | The 1,000 m² main pool has three types of water slides. | Water slides including BIG☆ALOHA are for riders 120 cm or taller. | There is a children's pool designed for parents and children together. | Swim diapers are allowed in the baby water-play area. |
| Oriental Hotel Okinawa Resort & SpaNago, Okinawa | The Garden Pool has a long water slide. | The water slide is for guests 120 cm or taller. | There is a children's pool. | Children not out of diapers must wear a swim diaper with a swimsuit over it. |
| Rusutsu ResortRusutsu, Hokkaido | The indoor Aqua Coaster is about 84 m long and requires riders to be 130 cm or taller. | Not stated in the sources we checked | The outdoor pool area has a fountain pool about 30 cm deep for small children. | Infants must wear swim diapers under their swimsuit. |