Nagano Season Forecast | La Nina Japan 2026
La Niña Japan, La Nina Japan, Nagano Season Forecast Welcome to our latest (September 2025) Nagano Season Forecast + La Nina Japan 25/26. It’s going to be fairly lengthy, so grab yourself a coffee or your favourite beverage. Nagano Season Forecast | La Nina Japan 2026 TLDR Summary A similar Nagano season forecast to 2024/25 with a slight chance of La Nina Japan. Snowfalls across the resorts should fall somewhere around the annual average or slightly above, with temps also average. Should be regular good falls with occasional warmer patches. Expect better odds of solid snow at higher-altitude resorts (Hakuba, Shiga Kogen, Nozawa Onsen, Myoko) than at low-elevation bases. Lower resorts are more exposed to warm/rainy intrusions if the jet stream and Pacific storms shift. La Nina Japan 2025/26 Winter First, a little bit of explanation of how we come to the following conclusions. We rely on a variety of…
