When will ski resorts in New Hampshire open for the ski season? The 2024/25 Ski season in New Hampshire starts from 2024/12/15. See this list of projected opening dates for New Hampshire 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 New Hampshire, and don't miss opening day at your favorite resort!