Ask anyone who skis Japan where the deepest, most reliable powder falls and the answer is almost always Hokkaido. But there is a second, quieter powder kingdom on the main island of Honshu, and it sits right in our backyard: the Powder Belt of Northern Nagano and the Myoko region. Stretching from Madarao and Tangram across Myoko’s seven resorts to Lotte Arai and Charmant Hiuchi, this is one of the most snow-blessed corners of Japan and one of the least crowded. Here is a month-by-month look at what the season actually delivers, so you can time your trip to the snow.
Why the Powder Belt gets so much snow
The secret is geography. Cold, moisture-laden air sweeps off the Sea of Japan and is forced up over the mountains of the Shinetsu region, dumping its load as some of the lightest powder on earth. The result is staggering annual totals, and it is why this region comes to mind when thinking of Japow. Madarao Mountain Resort averages around 10 to 13 metres of snow a season, while Myoko Suginohara regularly tops 13 metres and is often called Japan’s powder capital. Lotte Arai averages roughly 15 metres, and Charmant Hiuchi, a hidden gem in Itoigawa, has recorded snow depths exceeding 5 metres for several days during the peak season. For context, that puts this region on par with the deepest resorts in Hokkaido, but with a fraction of the crowds.
December: the season wakes up
Resorts in this area do not fully open until mid-December, with almost all lifts running by around Christmas. The good news is that if you are in the area early and the conditions are not yet there, you are still close enough to the high-altitude resorts of Shigakogen, which open by the end of November, and Nozawa Onsen, which uses manmade snow to open by early December.
Madarao averages roughly 40cm of fresh snow across the month, but the base is still building. If you come to the region before Christmas, expect to find resorts running only a few lifts, so treat it as a soft opening: great for natural snow groomed slopes, not yet the deep powder Japan is famous for. From Christmas onward the snow machine switches on, and the region starts to live up to its reputation. For a sense of what the whole season might hold, keep an eye on our Japan snow season forecast.
January: the heart of the season
January is when the Powder Belt earns its name. This is the snowiest month of the year, with Madarao averaging around 55cm of fresh snow and Charmant Hiuchi closer to 65cm, falling on roughly five days a week. The sea-effect snow machine runs almost non-stop, and the base depth climbs quickly past two metres. It is also the coldest month, with base temperatures around minus five to 10 degrees, which keeps the snow light and dry. The trade-off: January is peak season, so book early and expect busier slopes, though “busy” here is still far quieter than Hakuba or Niseko.
February: deep and dependable
February is the deepest month of the season. The snowpack peaks, with Charmant Hiuchi recording its deepest-ever base of 690cm in February 2025 and Madarao’s tree runs at their absolute best. Fresh snowfall eases slightly from January — Madarao averages around 40cm for the month — but the accumulated base means the off-piste and backcountry terrain is at its most forgiving. It is the perfect window for a guided freeride day. For most skiers, late January through February is the sweet spot: deep snow, settled base, and the Powder Belt’s famous tree skiing in full glory.
March: the powder sweet spot
Here is a local secret: March is often the best month of all. The snow is still deep — the region’s deepest recorded bases have frequently landed in March — but the crowds have thinned and the prices have dropped. The days are longer and sunnier, the light is better, and the powder stays dry at altitude. Madarao averages around 20cm of fresh snow in March, and the ungroomed terrain holds its quality well into the month. If you want deep snow without the peak-season rush, late February to mid-March is the timing perfectionists aim for.
April: the backcountry month
April is the season’s best-kept secret, and it is the month we love most for backcountry. Some resorts close by the end of March, while others stay open into April and sometimes early May depending on the conditions, but the real magic is off-piste. By April the snowpack is at its deepest and most stable, the spring sun brings long bluebird days, and the backcountry terrain around Myoko and the surrounding peaks of Hiuchi, Yakekawa, Tenguhara or Takatsuma opens up in a way it simply does not in mid-winter. This is when our guided backcountry tours really shine. The caveat: lower slopes get heavy and wet in the afternoon, so it is a morning game — but those mornings are unforgettable.
One region, one pass, endless terrain
The beauty of the Powder Belt is that you are never locked into a single mountain. Madarao and Tangram run on one combined pass, and the whole region, Myoko’s seven resorts, Lotte Arai, Nozawa Onsen, Shigakogen and beyond are a short drive apart. If you are weighing how to cover several mountains, our guide to multi-resort ski passes is a good place to start. That is why we base our ski packages and Madarao-Myoko itineraries here: you get the snow of Hokkaido with the convenience and value of Northern Nagano, and minus the extreme low temperatures, low visibility and strong winds.
Plan your Powder Belt trip with us
Whether you want guided day tours, backcountry days in April, or gear rental for the season, we know exactly when and where the snow will be. Get in touch at outdoor@lacolinaretreat.jp or via our contact page, and we will help you time your trip to the Powder Belt’s best snow.