When are Valle d'Ayas ski resorts closing for the season? 2026/27 Ski season in Valle d'Ayas ends at 2027/03/21. Check out this list of projected closing dates for ski resorts in Valle d'Ayas to help you plan the rest of your ski season and get those late-season turns in. All projected closing dates are subject to change at each resort's discretion depending on the snow conditions and other factors.