Tendo Kogen is wearing its koyo colours right now. Morning frost is possible, but the mountain is still mostly in sightseeing mode. Do not mistake first flakes for a usable snowpack. Pack for cold mornings and wet trails rather than chairlift laps.
That makes Tendo Kogen the 7th snowiest of 13 Yamagata resorts we have reviewed.
Look at the most recent 12 hours, not the weekly total. When west to northwest flow off the Sea of Japan is the pattern to watch, the live numbers usually matter most in the first lift window. With a 600 to 700 metre elevation band and 100 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 timing, because the compact footprint gets tracked or softened quickly. If you are looking beyond the ropes, only chase that angle when the forecast also shows settled wind and stable visibility. Chase a cold morning immediately after fresh snow; skip warm afternoons unless you are there for relaxed laps.
See which resorts in Yamagata are getting the best 24 hour totals and the next two days of snow.