Llyn Cwmsilin-bach is a small, scenic upland lake in the Brecon Beacons area of Wales, surrounded by moorland and offering a peaceful fishing experience. The water holds wild brown trout and is popular with fly fishers seeking traditional Welsh lake fishing. The remote setting and natural character make it an attractive destination for those seeking solitude and challenging conditions.
The close season on Llyn Cwmsilin-bach runs 15 March – 15 June. Effective methods include Fly.
County
Gwynedd
Type
Lake
Access
Free Fishing
Close Season
15 March – 15 June
Best Fishing Methods at Llyn Cwmsilin-bach
Recommended methods for Llyn Cwmsilin-bach include Fly. The most effective approach will depend on conditions, season and target species.
Fly
Interactive Map
Find UK lakes, canals, rivers and French public waters
Filter by species, access type, water quality and fishing status. View Llyn Cwmsilin-bach and 190+ UK stillwaters on the map.
Species information for this water is available to PiscaMaps members.
How do I get a permit for Llyn Cwmsilin-bach?+
Fishing at Llyn Cwmsilin-bach is free with a valid Environment Agency rod licence. No day ticket or club membership is required.
When is the close season at Llyn Cwmsilin-bach?+
The close season at Llyn Cwmsilin-bach is 15 March – 15 June. Fishing is not permitted during this period under EA byelaws.
What are the best methods for fishing Llyn Cwmsilin-bach?+
Recommended methods include Fly. The most effective approach will vary by season and target species — adjust tactics to conditions on the day.
Do I need a rod licence for Llyn Cwmsilin-bach?+
Yes — all anglers aged 13 and over fishing in England and Wales need a valid Environment Agency rod licence. Buy yours at gov.uk/get-a-fishing-licence before your session.
Planning a Trip to Llyn Cwmsilin-bach
A valid Environment Agency rod licence is required to fish Llyn Cwmsilin-bach — buy yours at gov.uk. No additional permit is required — the water is free to fish with a rod licence.
Located in Gwynedd, Llyn Cwmsilin-bach is a UK stillwater with quality coarse fishing. Check weather and conditions before your visit and always pack out your litter.
