Gassan snow report
Gassan
Gassan ski resort in Japan is known for its excellent powder snow and long ski season, with slopes open from April to July. The resort features a variety of trails for all skill levels, but the best trails for experienced skiers are the 8 km long Daikura and the challenging Mogami. A lesser-known fact is that Gassan is located on an active volcano, and skiers can see steam rising from the slopes. For beginner skiers, the gentle slopes of the Toge area are perfect, and ski lessons are available. After a day on the slopes, the Kiraku bar is a popular apres ski spot, known for its delicious food and drinks.
Terrain mix: The Gassan Ski Resort is located in the Gassan mountain range in Yamagata Prefecture, Japan. The resort is known for its beautiful views of Mount Gassan, one of the Three Sacred Mountains of Dewa. The mountain range surrounds the resort and provides stunning scenery for visitors. The resort's slopes offer a variety of terrain for skiers and snowboarders, with runs suitable for all skill levels. The mountain aspect of Gassan Ski Resort is characterized by deep powder snow and challenging terrain, making it a popular destination for adventurous winter sports enthusiasts.
Plan your day down to the hour
Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no. Watch the snow column the morning of a storm to know when to call in sick.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & snow
Daily temperatures, snow, and rain projected over the next two weeks -- start of next storm cycle, end of last one.
Beyond the slopes
Other ski areas, basecamp options, alpine fishing, and scenic stops near Gassan -- worth knowing whether you're in for a day, a long weekend, or a season pass.
Mountain & avalanche safety
- Know before you go
- Check today's avalanche bulletin from the regional avalanche center before any off-piste / side-country / backcountry travel. Conditions can shift dramatically between morning and afternoon on storm days.
- Carry the gear, know how to use it
- Beacon, shovel, probe. Practice companion rescue on a calm day, not during a real burial.
- Mind the weather window
- Heavy snow + wind builds wind slabs at ridgelines. The day after a storm is often the riskiest in the backcountry, even if the resort itself is open.
- Respect closed terrain
- Ropes are there for a reason. Even in-bounds, ducking a closure can trigger a slide that catches you and others below.
Track Gassan in the Snoflo app
Save this resort as a favorite, set push alerts when snowfall crosses a threshold (e.g. "alert me when Gassan reports 6″ new"), and Snoflo's iOS app will push the moment the SNOTEL station crosses.
About Gassan
Where does the snow data for Gassan come from?
Snowpack, SWE, 24-hour snowfall, and air temperature come from the nearest USDA NRCS SNOTEL station. Forecast comes from the National Weather Service / yr.no feed that Snoflo's iOS app uses.
How often is the snow report updated?
Snowpack and SNOTEL data are updated continuously by NRCS (typically hourly). The 15-day weather forecast is refreshed throughout the day. Snoflo caches and renders the most recent observation -- look for the "as of" timestamp on the snowpack hero.
What's the elevation at Gassan?
See the Resort Metrics panel above for base / summit / vertical drop. The summit elevation drives snowpack accumulation -- higher summits hold snow longer through spring.
How is "% of normal" calculated?
Today's snowpack is compared to the average snowpack on this calendar day across every recorded year at the nearest SNOTEL. 100% means right on average; 130% is a big year; 60% is thin.
What ski resorts are near Gassan?
See the Other Ski Areas pill grid at the bottom of the page for resorts within driving distance. The sister Other Ski Areas card in the Plan-a-longer-trip grid above shows the closest few.
Can I get alerts when fresh snow hits?
Yes -- snow alerts are managed in the Snoflo iOS app. Favorite this resort, set a snowfall threshold (e.g. "alert me when 6+ inches"), and you'll get a push the moment the SNOTEL crosses.
Other resorts near here
Snoflo-tracked ski areas within driving distance of Gassan.