Kamoidake is in that crisp shoulder-season phase. High peaks may catch a cosmetic dusting, while lower slopes stay very much autumn. A cold snap could whiten the tops, but it will not change the travel plan yet.

That makes Kamoidake the 19th snowiest of 33 Hokkaido resorts we have reviewed.
Read the freezing level before the snowfall total. When cold inland air is the pattern to watch, the live numbers usually matter most in the first lift window. With a 216 to 467 metre elevation band and 251 metres of vertical, the gladed pockets are the first place to check once the groomers get tracked. A seasonal baseline around 8 metres means small clean refills matter more than waiting for a giant number. The swing variable is whether the snow line stays below the 216 metre base through the storm. Use the access rules on the day as the limit, then let the wind and temperature decide how far to push it. Chase it when 5 to 15 cm lands cold to the base; skip it when the forecast shows a warm lower mountain.
See which resorts in Hokkaido are getting the best 24 hour totals and the next two days of snow.