I'm looking for a resort pool in Tokyo to go swimming in July, not an onsen.

Conclusion

If you're visiting Tokyo in July and looking for a resort-style pool (not an onsen), your best options are:

• Tokyo Summerland for the biggest pool & theme park combo
• Yomiuriland Pool WAI for a family-friendly water park
• Keio Plaza Hotel Sky Pool for a convenient city escape 🏙️💦

General Information

Unlike many countries where hotels have year-round pools, pools in Japan are often seasonal and open only during the summer (usually July to early September).
Also, most “resorts” in Japan focus on onsen (hot springs), so it’s important to look specifically for summer pools.

Here are the top resort-style pool experiences around Tokyo in July — no hot springs involved!

🏄‍♂️ Best for Big Pools & Adventure

Tokyo Summerland)

• Japan’s largest pool park, combined with a theme park
• Includes:
  • Huge wave pool 🌊
  • Lazy river
  • Indoor & outdoor areas
  • Multiple water slides
  • Unlimited rides with a 1-day pass
• Location: Akigawa (1 hour from Shinjuku via Keio Line to Keio-Hachioji)
• Great for: Teens, adventure seekers, group fun
• Website: https://www.summerland.co.jp/

💡 Come early — it gets crowded during weekends in July.

🛝 Best for Kids & Families

Yomiuriland Pool WAI

• Water park located next to Yomiuriland amusement park
• Includes:
  • Kids’ pool
  • Lazy river
  • Slides
  • Amusement rides next door 🎡
• Location: Near Keio Yomiuriland Station (30 min from Shinjuku)
• Less crowded than Summerland
• Website: https://www.yomiuriland.com/wai/

💡 Perfect for families with small children.

🏙️ Best for Quick Access & Relaxation

Keio Plaza Hotel Sky Pool

• Rooftop outdoor pool with a city view
• Small but stylish, no need to leave Tokyo center
• Location: Shinjuku, a 5-minute walk from the station
• For guests: Entry is discounted; non-guests may enter for a fee
• Great for: Adults, travelers with limited time, or couples
• Website: https://www.keioplaza.com/

💡 A calm escape without leaving Tokyo — often overlooked by tourists.

Optional: Night Pool Experiences 🌙

Some pools offer night pool access during summer — with lights, music, and a resort atmosphere.
It’s more about the vibe than swimming — great for Instagram or relaxing with friends.

Check for availability at:

• Keio Plaza Hotel
• Other luxury hotels in Tokyo (e.g., Grand Nikko Tokyo Daiba, Hotel New Otani)

My Personal Tip

If you want the biggest, most exciting pool day, go to Tokyo Summerland.
If you're traveling with kids or want to avoid huge crowds, Yomiuriland Pool WAI is a better fit.
And if you're short on time or staying in the city center, Keio Plaza Hotel’s Sky Pool is the most convenient.

All three options are worth considering depending on your goals.
Just remember: bring a towel, sunscreen, and check the entry rules — tattoos are often not allowed at Japanese pools.

Travel Tips

• Open season: Early July to early September
• Tattoos: Many pools do not allow visible tattoos. Use cover stickers or rash guards
• Footwear: Bring flip-flops — shoes are not allowed near poolside
• Book in advance during busy weekends or holidays
• Bring swimwear — rentals are rare or expensive