Gŵyl Portmeirion Festival 2026 is a series of one-day concerts held at Castell Deudraeth Fields to mark the centenary of the iconic Italian-style village of Portmeirion. The Hafwyl event features a lineup of Welsh-language artists including Bwncath, 9Bach, and Band Pres Llareggub, offering an intimate musical experience in a scenic coastal setting.