Mount Gassan
Open by month
Closed in January. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year. New Year (Dec 29 – Jan 3): closed.
Closed in February. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Closed in March. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Closed in April. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Closed in May. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Partly closed in June: Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Open in July. No seasonal closure recorded.
Open in August. No seasonal closure recorded.
Open in September. No seasonal closure recorded.
Partly closed in October: Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Closed in November. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year.
Closed in December. Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year. New Year (Dec 29 – Jan 3): closed.
Checked against the official site on 2026-10-12.

The main peak of the Dewa Sanzan, a broad sacred mountain with alpine flowers and an old pilgrim shrine at the summit, climbed in the short summer season.
Bandai-Asahi National Park
Nearby
- Yudonosan Shrine ≈ 15 min by car
- Hijiori Onsen ≈ 35 min by car
- Mount Haguro (Dewa Sanzan) ≈ 45 min by car
- Matsugaoka Pioneer Settlement ≈ 50 min by car
- Jionji Temple ≈ 55 min by car
Travel times are rough estimates by car.
- Closed or limited
- Climbing season is about July 1 to late September; the road to the 8th Station is open about late June to late October and closed by snow the rest of the year
- Getting there
- Summer bus from JR Tsuruoka Station to Gassan 8th Station (about 2 hrs), then hike to the summit
Few buses — check times or join a tour - Fee
- Free (summit shrine requires a purification fee)
- Good to know
- A real mountain hike; file a climbing plan. Photography is banned inside the summit shrine
- Time needed
- 6 h
Checked against the official Japanese website on 2026-10-12. Report outdated info