Looking for a refreshing way to escape the summer heat in Japan? Stand-up paddleboarding (SUP) on Lake Aoki in Hakuba, Nagano is one of the best outdoor experiences you can have. Just minutes from Hakuba’s mountain resorts, this crystal-clear alpine lake is the perfect spot to cool down, relax, and soak in breathtaking views of the Japanese Alps.

Lake Aoki is an underrated natural wonder in Nagano Prefecture, Japan. Known for its calm, turquoise waters and untouched forest surroundings, it offers the ideal setting for both beginners and experienced riders. When we visited in the summer, the lake was so peaceful it felt like we had the entire place to ourselves—a rare luxury in Japan’s busy travel seasons. Paddleboarding here is not just about water sports, it’s about finding serenity in the nature of Hakuba.

APC Base 2 makes stand-up paddleboarding in Hakuba simple and stress-free. Even if online booking sites show no availability, they may still be able to arrange your SUP rental if you contact them directly. Another nice feature is that there are no set start times—you can reserve the slot that best suits your day, whether you’re planning to paddle early in the morning or after a hike.

Rental options are flexible. A standard SUP rental for one person (4th grade or older) is priced at 2,800 yen for one hour or 3,800 yen for two hours, and this includes all the essentials—board, paddle, life jacket, and facility usage. Younger children (3rd grade or under) can ride together with a parent or guardian for just 1,000 yen per child. There’s also a new tandem SUP option for two adults, for couples or friends who want to ride together, available at 5,000 yen for one hour or 7,000 yen for two hours.

The SUP season at APC Base 2 runs until November 3, 2025. From October onwards, rentals are limited to experienced riders due to changing lake conditions. In September, opening hours are from 9:00 AM to 4:00 PM, with the last rental starting at 2:00 PM. Because the facility closes on days without reservations, it’s always a good idea to check their Instagram before heading out. To make the most of your time on the water, arrive 10 to 15 minutes before your reserved slot.

Since you’ll likely get wet, make sure you follow this guide on what to Bring for SUP in Hakuba. Wear comfortable clothing suitable for the water, and bring a towel and change of clothes for afterward. Sandals make moving around the shore easier, and a watch or phone will help you keep track of time. Staying hydrated is key when enjoying Nagano’s summer heat, so don’t forget drinks. For extra convenience, consider waterproof phone cases or eyeglass bands if needed.

There are a few rules to keep in mind. SUP rentals are available only for guests under 65 years old, with a weight limit of 80 kilograms. Sharing a SUP between multiple people is not allowed, and pets are not permitted on the premises, including the parking lot. If you’re accompanying a group but not renting equipment, a small facility usage fee of 500 yen applies for waiting inside. These guidelines are designed to ensure safety and comfort for all guests. If you are looking for a less strenuous summer activity in Japan, check out Kira Kira Glass for a unique and fun glassmaking workshop in the middle of the beautiful Japanese Northern Alps.

Click here for the google maps link.

When is the SUP season at APC Base 2?

The SUP season runs until November 3, 2025. From October onwards, only experienced riders are accepted.

What are the rental hours?

In September, hours are 9:00 AM – 4:00 PM, with the last rental at 2:00 PM. Always check Instagram for updates as the facility may close on days without reservations.

How much does SUP rental cost in Hakuba?

A single rental is 2,800 yen for 1 hour or 3,800 yen for 2 hours. SUPs for two adults are 5,000 yen for 1 hour or 7,000 yen for 2 hours. Children riding with parents are 1,000 yen each.

What should I bring for SUP at Lake Aoki?

Bring clothing that can get wet, a towel, change of clothes, sandals, a watch or phone, and drinks to stay hydrated in the summer heat. Optional items include waterproof cases and eyeglass bands.

Are there restrictions for SUP rentals?

Yes, the weight limit is 80 kg and the age limit is 65. Pets are not allowed, and SUP sharing among multiple people is prohibited. If you are waiting inside without renting, a facility fee of 500 yen applies.