When will ski resorts in the Switzerland open for the ski season? The 2026/27 Ski season in the Switzerland starts from 2025/09/01. See this list of projected opening dates for Switzerland mountains. Important Note: Not all dates listed here are official and final, as resort opening dates are projected and subject to change. Check back for updates on when the lifts are set to start spinning at Switzerland, and don't miss opening day at your favorite resort!