![[OFFICIAL]Hoshino Resorts TOMAMU](/assets/common/images/siteid-en.svg)
With the indoor temperature being kept over 30°C, summer never ends at Mina-Mina Beach.
An indoor beach equipped with Japan's largest wave pool, measuring 30m x 80m.
Experience the largest wave pool in Japan, measuring 30m x 80m! Enjoy both parallel waves and slightly bigger rough waves during designated times.
A children's pool with a depth of 30 cm, which is great for first-time pool play.
After 8:00PM, Mina-Mina Beach is lit up, creating an elegant atmosphere different from the lively daytime. Free admission for guests.
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Rental items
Size Price Male Swimsuit Waist Size
M（76～84cm）
L（84～94cm）
LL（94～104cm）
3L（104～115cm）
4L（115cm）1,200 JPY Female Swimsuit (Bust / Hip Size)
No.7（72～80cm / 82～90cm）
No.9（83cm / 87～95cm）
No.11（86cm / 92～100cm）
No.13（89cm / 92～100cm）
No.15（92cm / 97～105cm）1,200 JPY bikini No.9（83cm / 87～95cm）
No.11（86cm / 92～100cm）1,700 JPY Boy Swimsuit (Height)
100（95～105cm）
110（105～115cm）
120（115～125cm）
130（125～135cm）
140（～140cm）
150（～140cm）1,200 JPY Girl Swimsuit (Bust / Height)
100（49～55cm / 95～105cm）
110（53～59cm / 105～115cm）
120（57～63cm / 115～125cm）
130（61～67cm / 125～135cm）
140（65～71cm / ～140cm）
150（74～80cm / ～150cm）1,200 JPY Rash Guard (Bust)
M（88～96cm）
L（96～104cm）
2L（104～112cm）
3L（112～120cm）1,200 JPY Rental Pareo FREE 1,200 JPY -
Pool Toys & Safety Equipment
Price Life Jacket Free Pool Toy Set 1,800 JPY Exciting Beach Debut Set 1,500 JPY SUP Rental (30 minutes) 1,200 JPY Family Seat
(With Floating Ring Free Pass Benefit)5,000 JPY per seat
(Up to approximately 6 people)
Mina-Mina Beach Shop offers Helly Hansen swimwear, water sports pants, swim goggles, cover stickers, sleeves, sanitary products, and more.
- ※Limited stock available.
A cafe offering a variety of drinks and ice cream desserts made with Hokkaido ingredients that you can even take to go.
Located inside Mina Mina Beach, our cafe offers refreshing drinks and light snacks that you can enjoy while listening to the sound of the waves in this perpetual summer atmosphere. Please relax and unwind at our cafe.
Our open-air bath provides a sense of liberation, where you can enjoy bathing while viewing the snow-covered landscape during the day and the starry sky in a fantastic atmosphere at night.
| Dates | December 1st, 2025 – April 1st, 2026 April 24th, 2026 – November 1st, 2026 |
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| Opening Hours | 11:00AM - 8:00PM (Last Admission 7:00PM) *April 29th – May 6th, July 18th – August 31st 10:00AM - 8:00PM (last reception at 7:00PM) *November 1 (Sat) 5:00PM closing (last reception at 4:00PM) *Closed at 5:00PM on April 5th only (Last admission at 4:00PM)
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| Entry Fee |
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- *Tattoo Policy
At Mina-Mina Beach, we value cultural diversity while ensuring a comfortable atmosphere for all guests.
In the pool area (including while swimming), guests are kindly requested to wear a rash guard or similar swimwear to keep tattoos covered. - *Rental rash guards are available inside the facility.
▶︎ Hoshino Resorts Policy (Click here for details) - *Children under 16 years old must be accompanied by a parent or guardian. (an adult aged over 18 years old).
- *Bath towels and face towels are available for free rental.
A sport that was first practiced as a training method by rock climbers in the US Yosemite National Park, it is basically 'tightrope walking.' It helps develop balance and concentration on a line tensioned between two points. Advanced practitioners can also enjoy tricks such as jumps and flips on the line.
| Opening Period | December 1st, 2025 – April 1st, 2026 April 24th, 2026 – November 1st, 2026 |
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| Opening Hours | Available when Mina-Mina Beach is open
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| Location | Mina-Mina Beach Pool Side |
| Price | Free
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| Suitable for | All ages |
| Important Note | *Swimsuit is not required. For inquiries regarding this program, please contact +81 167-38-2103 Inquiry Hours: 11:00 AM – 10:00 PM |
You can experience the popular sport of Stand-Up Paddleboarding (SUP) indoors. It is suitable for SUP beginners when there are no artificial waves. During the artificial wave sessions, it is ideal for experienced SUP enthusiasts to challenge themselves.
| Opening Period | December 1st, 2025 – April 1st, 2026 April 24th, 2026 – November 1st, 2026 |
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| Opening Hours | Available when Mina-Mina Beach is open
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| Duration | 30 minutes |
| Venue and Reception | Mina-Mina Beach Reception |
| Price | 1 Board (Up to 2 people) 1,200 JPY
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| Suitable for | All ages
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| Things to bring | Swimwear |
| Important Note | For inquiries regarding this program,
please contact
+81 167-38-2103 Inquiry Hours: 11:00 AM – 10:00 PM |
Challenge the Waterline
You can experience the popular sport of Stand-Up Paddleboarding (SUP) indoors. It is suitable for SUP beginners when there are no artificial waves. During the artificial wave sessions, it is ideal for experienced SUP enthusiasts to challenge themselves.
| Opening Period | August 1st, 2026 – August 31st, 2026 |
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| Opening Hours | Approx. 20–30 minutes (Scheduled to be held once a day)
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Price | Free
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| Target | Guests who successfully cross the indoor Slacklining course (Open to all ages) |
| Important Note | For inquiries regarding this program,
please contact
+81 167-38-2103 Inquiry Hours: 11:00 AM – 10:00 PM |