Chateraise Ski Valley Koumi Snow Forecast
Early-season weather is the story at Chateraise Ski Valley Koumi right now. The next 3 days are a pause in the snow, according to the latest run. Not especially cold yet, but this time of year turns fast in Japan. Peak season isn't far off.

Snow Trend
24 Hour Forecast
10 day forecast
A typical season at Chateraise Ski Valley Koumi
- Average season
- ~5m of snow
- Base to summit
- 1400m – 1780m (380m vertical)
That makes Chateraise Ski Valley Koumi the 32nd snowiest of 39 Nagano resorts we have reviewed.
Forecast tips for Chateraise Ski Valley Koumi
Start with the upper-mountain wind and cloud line. When a cold inland trough is the pattern to watch, the live numbers usually matter most in the first lift window. With a 1400 to 1780 metre elevation band and 380 metres of vertical, the groomers tell the story quickly once the first few laps are done. A seasonal baseline around 5 metres means freshness and temperature matter more than chasing a big total. The swing variable is whether the upper lift can run with enough visibility to make the top worth using. If you are looking beyond the ropes, only chase that angle when the forecast also shows settled wind and stable visibility. Chase it after a cold storm only if the wind eases; if the top is socked in, wait for the next clear window.
Nearby forecasts
The closest resort we've reviewed is Yachiho Kogen, 3km NW, topping out at 1,830m. When a storm misses Chateraise Ski Valley Koumi, check these first.