Y Golau: Dŵr season 2 release date
The series, titled Y Golau: Dŵr, will air in Welsh, with subtitles, on S4C from 14 September 2025.
Plot
Y Golau: Dŵr returns to Llanemlyn, where a controversial redevelopment plan to expand the reservoir is reigniting old tensions. The story captivates Caryl, a young journalist, who becomes entangled in a complex web of personal betrayal, familial secrets, and dark mysteries, which raises doubts about the imprisonment of Rhys Owen for the murder of his cousin Llŷr during the protest against the expansion in 1995.
Cast
The second series returns to the fictional village of Llanemlyn and features an all-star ensemble cast with Siân Reese-Williams (Hidden/Craith, 35 Diwrnod, Hinterland/Y Gwyll) as Caryl Huws, Mark Lewis-Jones (Yr Ymadawiad, Y Sŵn, Dal y Mellt) as Rhys Owen, Nia Roberts (Tree on a Hill/Pren ar y Bryn, Yr Amgueddfa, Hidden/Craith) as Eve Davies and Robert Glenister (Sherwood, The Night Caller, Hustle) as Robert Davies.
The supporting cast include Tom Rhys Harries (who will play the title character in the DC Universe film Clayface, which starts filming this Autumn) as Hari Breckon, Maeve Courtier-Lilley as Mabli Davies Owen, Wyn Bowen Harries as Bryn Owen, Mali Tudno Jones as Megan Breckon, Matthew Gravelle as Gareth Breckon and Gillian Elisa as Eunice.
The series is created by Regina Moriarty (creator and lead writer of the first series of Y Golau/ The Light in the Hall) who has also written two of the episodes. The other four episodes have been penned by other leading Welsh writers; Siân Naiomi (The Indian Doctor, and co-writer of the first series of The Light in the Hall), Anwen Huws (Keeping Faith, Gwaith/Cartref, and co-writer of the first series of The Light in the Hall), Catherine Linstrum (Nuclear, Primeval) and Angharad Elen (The Crown, Stad, Deian a Loli).
Is there a trailer?
Y Golau: Dŵr is set to premiere on S4C on Sunday 14 September 2025, fully in Welsh or can be seen on following Wednesdays on S4C with English subtitles built in.
With its blend of moody landscapes, layered history, and a plot steeped in suspense, Y Golau: Dŵr promises to be one of the standout drama series of the autumn season. For audiences craving a cerebral, emotionally charged, and beautifully made TV experience—this is the one to follow.
Y Golau: Dŵr is a Triongl, Long Story TV and APC Stories for S4C and AMC+, made in collaboration with Channel 4 and the Welsh Government via Creative Wales.
All six episodes of the first series – Y Golau – can be watched now on S4C Clic and BBC iPlayer.