Asia
Gassan
Likely closed for the season (no closing date on record)
Likely closed for the season (no closing date on record)
Best months to book: January, February, March · 30-yr snow record
Scroll for happiness
Likely closed for the season (no closing date on record)
Weather data is still collected for informational purposes.
Last Snowfall
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Past 24 Hours
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Past 48 Hours
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Past 10 Days
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7-Day Forecast
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Snow Depth
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Gassan is closed for the season. Here is when it is usually best to book.
Best months to book
- #1January179cm avg
- #2February117cm avg
- #3March84cm avg
Ranked on 30-year snowfall and base-depth record. The live score returns when the lifts turn.
Current Conditions
Reported Tue, Oct 13, 10:02 PM UTC
Terrain
Likely closed for the season (no closing date on record)
4 runs · 3 lifts — live counts and the SnowSure™ Score return when the lifts turn.
Days 8–14 and every model are in SnowSure Pro.
Unlock with ProHistorical data from Open-Meteo archive • Forecast: SnowSure™ multi-model blend · mid-upper forecast point
Maps
All maps for Gassan →
Webcams & Proof of Powder
All webcams & Proof of Powder →
About Gassan
Gassan Ski Resort is located in Yamagata Prefecture, Japan, on the slopes of Mount Gassan. Known for its unique spring and summer ski season due to heavy winter snowfall, the resort typically operates from April to July. Gassan offers a relaxed atmosphere with natural, ungroomed slopes, catering primarily to intermediate and advanced skiers seeking a distinctive late-season experience. Key amenities include rental services and a simple base lodge, with the resort standing out for its deep snowpack and scenic mountain views.
Read the full resort guide →Frequently asked questions about Gassan
- Where is Gassan?
- Gassan is a ski resort in Japan.
- How high is Gassan?
- Gassan runs from a base elevation of 1,235 m (4,052 ft) to a summit of 1,670 m (5,479 ft), giving a vertical drop of 435 m (1,427 ft).
- How big is Gassan?
- Gassan has 4 marked runs and 3 lifts.
- How much snow does Gassan get in a typical season?
- Gassan averages 1181 inches / 3000 cm of snowfall in a typical season. Any individual season can run well above or below that.
- How will El Niño affect Gassan in winter 2026-27?
- El Niño Signal Rank: #402 of 488 SnowSure resorts · Tier E · strong-event signal -14% vs its own 30-yr average. In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Gassan averaged -14% versus its own 30-year snowfall baseline. Historically this is a timing play rather than a reason to stay home: aim for late winter (February–March) in winter 2026-27. Analog winters: '97-98 -35%, '15-16 -34%, '23-24 +26%. A pattern, not a promise.
