Gassan Snow Forecast
It's the early-season stretch at Gassan, when every storm counts. Winter is knocking: 11 cm is on the way in the next 3 days, best Wednesday morning. Mild air means the upper mountain does best out of this one.
Snow Trend
24 Hour Forecast
10 day forecast
A typical season at Gassan
Gassan is outside its usual snow season right now.
A typical season here runs November to April, peaking in January, with around 30m of snow in total.
- Average season
- ~30m of snow
- Snowiest month
- January (550–800cm)
- Usual season
- November to April, peaking in January
- Base to summit
- 1235m – 1670m (435m vertical)
That makes Gassan the 1st snowiest of 13 Yamagata resorts we have reviewed.
Month by month
Estimated cumulative fresh snowfall at major on-mountain ski areas; actual totals vary substantially by resort, elevation, measurement location, and season.
Forecast tips for Gassan
Lead with the 24-hour snowfall column. Here, west to northwest flow off the Sea of Japan is the pattern to watch, so the useful question is how cold and calm the next window stays. With a 1235 to 1670 metre elevation band and 435 metres of vertical, the gladed pockets are the first place to check once the groomers get tracked. A seasonal baseline around 30 metres means the headline numbers can be real storm signals rather than background noise. The swing variable is the overnight low, especially if the storm clears before first lifts. If you are looking beyond the ropes, only chase that angle when the forecast also shows settled wind and stable visibility. Chase it when 15 to 25 cm arrives cold overnight; skip it when warmth follows close behind.
Nearby forecasts
The closest resort we've reviewed is Yudonosan, 8km NW, topping out at 700m. When a storm misses Gassan, check these first.