Tsumagoi Resort "Sainosato" (Kakegawa City, Shizuoka Prefecture) will open its Water Park as a summer event within its vast grounds on July 18 (Sat). Prior to the regular opening, it will be open for a pre-opening on July 11 (Sat) and 12 (Sun) for two days! You can use it at a special discounted price on these two days.

Cool pools for the hot summer. The "Water Park" summer begins again this year. The Water Park offers something for every scene, with thrilling slides, a river ride enjoyable with family and friends, and a night pool that can be enjoyed with lighting without worrying about sunburn.

★About Pre-Opening Operations

Tsumagoi Water Park July 11 (Sat) & 12 (Sun) *Special preferential prices on these two days.

Prior to the full opening on July 18, you can use it at special prices for the two pre-opening days.

In addition, the two hotels and "Shinrin-no-Yu" (hot spring facility) will also be open as usual. You can stay overnight, relax in the hot springs, and enjoy an early summer mood.

◆Period: Two days, July 11 (Sat) & 12 (Sun), 2026 ◆Business Hours: 9:00 AM - 5:00 PM *Operations may be suspended due to temperature or weather conditions. ◆Prices: Special Pre-Opening Prices

Adults ¥2,300 / Junior & Senior High School Students ¥2,300 / Elementary School Students ¥1,300 / Toddlers (3 years and older) ¥900

◆Benefits:

1 Preferential Discount for "Shinrin-no-Yu": [Adults] Normally ¥1,100 ▻ ¥950 [Elementary School Students] Normally ¥550 ▻ ¥450

2 5% Discount Coupon for Gift Shop Items 3 10% OFF on In-Resort Activities

◆Parking Fee (Tax Included): ¥800 per vehicle per day / *Please enter through the North Main Gate.

*Please present your parking ticket at the Water Park ticket counter. *Guests staying overnight should present it at the front desk.

Shinrin-no-Yu Business Hours July 11 (Sat) 12:00 PM - 11:00 PM (Last entry 10:30 PM)

July 12 (Sun) 6:30 AM - 11:00 PM (Last entry 10:30 PM)

★Regular Operations

Tsumagoi Water Park

◆Period: July 18 (Sat), 2026 - September 6 (Sun)

*Closed August 31 (Mon) - September 4 (Fri) *September 5 (Sat) & 6 (Sun) open for day use only.

◆Business Hours: 9:00 AM - 9:00 PM *Operations may be suspended due to temperature or weather conditions.

July 21 (Tue) - 24 (Fri), July 27 (Mon) - 31 (Fri) August 24 (Mon) - 28 (Fri) until 8:00 PM

September 5 (Sat) & 6 (Sun) until 5:00 PM

Flowing Pool

Tsumagoi Water Park is a pool full of openness, surrounded by greenery. With 3 slides and 4 pools, it can be enjoyed by many, from couples to families.

There are also a flowing pool, slides, a popular diving pool, and a pool exclusively for children.

There is a food court by the poolside, offering drinks and meals.

It is a water park at a resort facility where you can enjoy yourself all day long.

Irresistible Speed! River Ride

Tsumagoi Water Park Various Fees

Admission fees vary depending on the date of use.

Please check the admission fee for your planned date.

Peak Season

August 8 (Sat) - 16 (Sun), August 22 (Sat) & 23 (Sun)

*9:00 AM - 9:00 PM (Last entry 8:00 PM)

★Peak Day Ticket [9:00 AM - 5:00 PM] Adults ¥3,300, Junior & Senior High School Students ¥3,000

Elementary School Students ¥2,300, Toddlers ¥1,400

★Peak Night Ticket

[From 4:00 PM until closing] Adults ¥2,500, Junior & Senior High School Students ¥2,200

Elementary School Students ¥1,900, Toddlers ¥1,000

Regular Season

Period A

July 18 (Sat) - 20 (Mon), July 25 (Sat) & 26 (Sun), August 1 (Sat) - 7 (Fri)

August 17 (Mon) - 21 (Fri), August 29 (Sat) & 30 (Sun) *9:00 AM - 9:00 PM (Last entry 8:00 PM)

Period B

July 21 (Tue) - 24 (Fri), July 27 (Mon) - 31 (Fri), August 24 (Mon) - 28 (Fri) *9:00 AM - 8:00 PM (Last entry 7:00 PM)

September 5 (Sat) & 6 (Sun)

*9:00 AM - 5:00 PM (Last entry 4:00 PM)

★Day Ticket [9:00 AM - 5:00 PM] Period A: Adults ¥2,800, Junior & Senior High School Students ¥2,500, Elementary School Students ¥1,800, Toddlers ¥1,400

Period B: Adults ¥2,600, Junior & Senior High School Students ¥2,300, Elementary School Students ¥1,600, Toddlers ¥1,200

★Night Ticket [From 4:00 PM until closing] Period A: Adults ¥2,000, Junior & Senior High School Students ¥1,700, Elementary School Students ¥1,400, Toddlers ¥1,000

Period B: Adults ¥1,800, Junior & Senior High School Students ¥1,500, Elementary School Students ¥1,200, Toddlers ¥800

*Children elementary school age and younger must be accompanied by a guardian (high school age or older). *Accompanying persons also require the admission fee listed above.

Save money with advance purchase!

You can enter smoothly without waiting in line at the ticket booth.

Purchase electronic tickets / Purchase tickets on Rakuten / Purchase on Rakuten Travel

Purchase tickets on Jalan / Purchase tickets on Iko-yo / Purchase on Webket

Purchase tickets on Seven Ticket

[Locker Rental Fee] Inside changing rooms: ¥300 per locker *Size: (W)34cm x (H)37cm x (D)42cm

Please refrain from bringing in food, drinks, or cooler boxes.

If you must bring a cooler box, a carrying fee of ¥1,000 per box will be charged.

Children elementary school age and younger require guardian accompaniment. Accompanying persons also require an admission ticket.

4 Pools and 3 Slides Tsumagoi Water Park

4 Pools and 3 Slides

★4 Pools: Swimming Pool, Children's Pool, Flowing Pool, Diving Pool

Swimming Pool Children's Pool Flowing Pool Diving Pool

★3 Slides: River Ride, Water Slider, Speed Slider

River Ride Water Slider Speed Slider

Enjoyment Beyond the Pools

Sand Beach Adventure

Experience a new sensation of athletic activities on a white sandy beach. An area where you can enjoy climbing, tightrope walking, and more.

*Free for those entering the pool.

And the fun continues into the night...

Enjoy the Magical Night Pool

Tsumagoi Night Pool

Avoid the strong daytime sun and spend private time in the pool that shines under the summer night sky.

*Please purchase a night ticket for admission.

The Water Park also offers a rich culinary experience.

*Photos are for illustrative purposes.

Light Meals and Various Drinks Available

Poolside Restaurant

Offers takeout menus recommended for breaks after swimming and lunch.

Ramen, Yakisoba, Pizza

Soft drinks, various alcoholic beverages, etc.

After enjoying the pool, a full-fledged hotel dinner buffet

Enjoy the Hotel Dinner Buffet

Restaurant Buffet Terrace

◆Main Lobby B1F

◆Business Hours: 6:00 PM - 9:00 PM *Last entry 8:00 PM

During the pool operating period, a Summer Festival Buffet is held!

Usage Fees

Adults (Junior High School Students and above) ¥6,600

Children (Elementary School Students) ¥4,620

Toddlers (3 years and older) ¥3,300

Access ●Approx. 15 minutes by car from Kakegawa Interchange ●Approx. 15 minutes by taxi/shuttle bus from Kakegawa Station

About Tsumagoi Water Park

Details here

Day Trip Hot Springs Kakegawa Tsumagoi Onsen Shinrin-no-Yu (Hot Spring Facility)

After enjoying the pool all day, relax with a healing hot spring bath. You can enjoy the indoor bath and outdoor bath (open-air bath).

Indoor Bath Outdoor Bath

Usage Fees *Includes bath tax

Adults (Junior High School Students and above) ¥1,100, Children (Elementary School Students) ¥550, Toddlers (under elementary school age) Free

*Towel set: ¥250 each, Towel & Room wear set: ¥400

Usage Hours

Weekdays 1:00 PM - 11:00 PM (Last entry 10:30 PM) Saturdays & Holidays 12:00 PM - 11:00 PM (Last entry 10:30 PM) Sundays 6:30 AM - 11:00 PM (Last entry 10:30 PM)

Accommodation Facilities Also Available

Within the grounds, there are two resort hotels: Hotel North Wing and Hotel South Wing. Accommodation plans including Tsumagoi Water Park admission tickets are also available for booking.

Hotel North Wing Hotel South Wing

Book your accommodation plan here

<Tsumagoi Resort "Sainosato">

Tsumagoi Resort "Sainosato" is located in a magnificent natural environment of 140ha (1.4 million m2), and is a comprehensive resort facility where you can enjoy all four seasons, featuring various sports facilities, conference rooms, music facilities, as well as the Tsumagoi Onsen "Shinrin-no-Yu" and two hotels.

Location: 2000 Mitsuike, Kakegawa City, Shizuoka Prefecture, 436-0011 Phone Number: 0537-24-1111 https://hmihotelgroup.com/sainosato/

FACT BOX

  • Source: PR TIMES
  • Category: Event