Gŵyl Cefni by Heledd ap Gwynfor | May 15, 2023 | Uncategorised This is what Cefni Festival had to offer in 2023! A week of entertainment in in Llangefni – right in the heart of Anglesey. And the festival will be back from 5 – 8 June 2024! 2023 – We’ll have to do it again in 2024!