What to Do in Hakuba in Summer: The Green Season Guide No One Told You About

TL;DR: Hakuba in summer offers alpine hiking (Happo Pond, Mt Karamatsu), mountain biking and paragliding at Iwatake, water sports at the Three Nishina Lakes, and village festivals—making it a viable year-round rental destination.

Most people who ask me about Hakuba assume it's a one-season town. Ski in, ski out, close the shutters in April. I thought the same thing until the summer my husband and I stopped pretending Hakuba was just a ski destination. We hiked Karamatsu, ate at a curry place that had four seats, and started actually paying attention to how the valley shifts between June and August.

If you're considering a property purchase here, or you're just curious what to do in Hakuba in summer, the green season matters more than you'd think. Not just for your own enjoyment—though that's reason enough—but because summer occupancy can be the difference between a property that pays for itself and one that bleeds cash nine months a year.

Alpine Hiking: Happo Pond, Mt Karamatsu, and the Trails You'll Actually Want to Do

Hakuba sits right at the base of the Northern Japanese Alps, which means summer hiking isn't some side activity—it's the main event. The two routes I recommend most often are Happo Pond and Mt Karamatsu, and they're different enough that you'll probably want to do both if you've got the time.

Happo Pond (八方池)

This is the accessible one. You take the gondola and chair lifts from Happo One ski resort up to around 1,830m, then it's a 90-minute hike to the pond itself at 2,060m. The trail is well-maintained, mostly boardwalked, and suitable for families with older kids. On a clear day, you get the full Shirouma mountain range reflected in the water—and honestly, it's genuinely one of those moments where you understand why people move here.

Practical notes:

• Gondola + lifts: ¥3,200 round-trip for adults (2026 rates, confirm before you go)
• Operating season: late June to early October, weather permitting
• Crowds: weekends in July-August can get busy; head out early or pick a weekday
• What to bring: layers (it's cold at the top even in August), water, sun protection

Mt Karamatsu (唐松岳)

This is the real commitment. Karamatsu's summit is 2,696m, and while you can take the Happo gondola to shorten the approach, you're still looking at 4-5 hours round-trip from the top of the lifts. The trail is steeper, rockier, and less forgiving than Happo Pond, but the payoff is a proper alpine ridgeline walk with 360-degree views—you can see all the way to the coast on a clear day.

I did this with my husband in late July. We started at 6:30am to dodge the afternoon weather, brought way more water than we thought we'd need (and we needed all of it), and spent about six hours total including breaks. It's not technical, but it's also not casual. Anyway, back to what I was saying—if you're someone who hikes regularly and wants something that feels like an accomplishment, this one's for you.

Iwatake Mountain Resort: Beyond the Snow

Iwatake completely transforms in summer. The ski runs become mountain biking trails, the slopes turn into paragliding launch points, and the whole resort shifts to an outdoor adventure vibe. It's way less crowded than Happo in summer, which I really appreciate, and there's a genuine effort to make it feel like a destination rather than just a ski area with the lifts still running.

Mountain Biking

The downhill trails here range from gentle cruisers to proper technical stuff. Rent a full-suspension bike and protective gear at the base, take the gondola up with your bike, and descend through forest trails with views of the valley below. If you've never done lift-accessed mountain biking, this is a forgiving place to start—just don't skip the helmet.

Paragliding

Tandem paragliding flights launch from the top of the gondola. You're strapped to an instructor, you both run off the slope together, and then you're airborne over the valley for 10-15 minutes. It's pricey—around ¥10,000-12,000 for a tandem flight—but it's the kind of thing people remember years later. Good-weather weekends fill up fast, so book ahead if you're set on doing it.

Three Nishina Lakes: Water Sports and Quiet Afternoons

About 20 minutes south of Hakuba village, the Three Nishina Lakes—Kizaki, Nakatsuna, and Aoki—are where locals go when they want to be on the water instead of up a mountain. They're not dramatic alpine lakes; they're warm, calm, and lined with campgrounds and small beaches. Kizaki is the largest and the most set up for water sports.

You can rent stand-up paddleboards (SUP), kayaks, and small sailboats at several spots around Kizaki. There's wakeboarding and water skiing too if that's your style, though honestly most people I see are just paddling around or floating on inflatables with a cooler. It's pretty low-key.

What I like about the lakes is that they're where Hakuba feels like an actual summer town instead of just an adventure resort. Families camp, teenagers jump off docks, dogs swim. If you're staying for more than a few days and you've already done the big hikes, this is where you reset.

Summer Festivals and Events Worth Planning Around

Hakuba's festival calendar is lighter in summer than in winter, but there are a few events that actually pull crowds and shift the valley's whole vibe.

Hakuba Happo Onsen Festival (Early August)

This is the main event. Held in early August at Happo village, it's a traditional Japanese summer festival with taiko drumming, food stalls, yukata, and fireworks over the mountains. If you've never been to a Japanese matsuri, this is a solid introduction—it's big enough to feel festive but small enough that you're not getting crushed in a crowd of 50,000 people.

Local Village Matsuri

Most of the smaller villages (Echoland, Wadano, Cortina) run their own summer festivals, usually in late July or August. They're quieter, more neighbourhood-focused events. Portable shrines get carried through the streets, local kids wear matching festival jackets, and food stalls are run by the same people who serve you coffee at the konbini. They're not set up for tourists, which is exactly why they're worth checking out if you're around.

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