Arai Mountain Resort (Lotte Arai Resort) opens on Saturday, 12 December 2026 for the 2026-2027 winter season. The high season runs until 21 March, and the spring season is planned to run from 22 March to Sunday, 9 May 2027. Last season it opened on 13 December.
The resort now uses the name "Arai Mountain Resort" on its official website.
Most resorts near Tokyo announce their dates between September and November. We track every confirmed 2026-2027 date, and explain how season timing works, in one place: When Do Honshu Ski Resorts Open?
Planning your trip? See the full Japan ski trip planning timeline.
Source: Arai Mountain Resort official website. Translated and summarised by Japow Guides.
