Llyn Cwmsilyn-uchaf is a remote upland lake in Snowdonia, Wales, offering a wild and scenic fishing experience in a mountainous setting. The water holds populations of brown trout and Arctic char, making it attractive to fly anglers seeking a challenging mountain lake experience. The isolation and natural character provide excellent opportunities for those seeking solitude and quality trout fishing in pristine Welsh landscape.
The close season on Llyn Cwmsilyn-uchaf runs 15 March – 15 June. Effective methods include Fly, Lure.
Area
4.9 ha
County
Gwynedd
Type
Lake
Access
Free Fishing
Close Season
15 March – 15 June
Best Fishing Methods at Llyn Cwmsilyn-uchaf
Recommended methods for Llyn Cwmsilyn-uchaf include Fly, Lure. The most effective approach will depend on conditions, season and target species.
FlyLure
Frequently Asked Questions
What fish can I catch at Llyn Cwmsilyn-uchaf?+
Species information for this water is available to PiscaMaps members.
How do I get a permit for Llyn Cwmsilyn-uchaf?+
Fishing at Llyn Cwmsilyn-uchaf is free with a valid Environment Agency rod licence. No day ticket or club membership is required.
When is the close season at Llyn Cwmsilyn-uchaf?+
The close season at Llyn Cwmsilyn-uchaf is 15 March – 15 June. Fishing is not permitted during this period under EA byelaws.
What are the best methods for fishing Llyn Cwmsilyn-uchaf?+
Recommended methods include Fly, Lure. 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 Cwmsilyn-uchaf?+
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 Cwmsilyn-uchaf
A valid Environment Agency rod licence is required to fish Llyn Cwmsilyn-uchaf — buy yours at gov.uk. No additional permit is required — the water is free to fish with a rod licence.
Located in Gwynedd, Llyn Cwmsilyn-uchaf is a UK stillwater with quality coarse fishing. Check weather and conditions before your visit and always pack out your litter.
