Gwynedd
Llyn Cwmystradllyn
£20 today Season 20 Mar to 31 Oct
Day tickets
Buy a ticket for a single day, with rates and dates further down.
Stillwater
Bank fishing only.
Bag limit of 6
You may take up to 6 fish. Check the rules below.
About Llyn Cwmystradllyn
Llyn Cwmystradllyn is a reservoir in the south western foothills of Snowdonia, in the national park, that supplies drinking water for the Llŷn Peninsula. Pwllheli and District Angling Association has fished it since 1985 and calls it its primary fishery. It describes a gin clear lake in wild country, with wild brown trout and regularly stocked rainbow trout.
Fly, spinner or worm may be used, with a single baited hook, and the worm can work well after heavy rain by the small feeder streams. Maggots and ground baiting are banned because the lake is a water supply. The limit is six fish a day, and fish under 21cm must be returned. The rainbow trout season runs from 20 March to 31 October and the brown trout season from 20 March to 30 September, fishing from 8am until one hour after sunset. Fishing from the dam is not allowed. The association’s 2026 combined river and lake tickets are £125 for an adult season, £50 for a week and £20 for a day, and an evening ticket from 4pm for 3 fish is £12. The position shown is approximate.
How you can fish here
- Methods
- Any Method
Pricing and season
Indicative prices. They don't show whether a day is still free and other rates may apply, so confirm availability and the final price with whoever you book through before you travel.
Tickets
Day tickets
- Adult day ticket, river and lake Day ticket · 20 Mar to 31 Oct 2026 price from the association’s permits page for the combined river and lake ticket. The page lists lower prices for senior citizens, youths and juniors.
- £20 per day
- Adult week ticket, river and lake Day ticket · 20 Mar to 31 Oct 2026 price from the association’s permits page for the combined river and lake ticket. The page lists lower prices for senior citizens, youths and juniors.
- £50 per week
Season and syndicate rods
- Adult season ticket, river and lake Season rod · 20 Mar to 31 Oct 2026 price from the association’s permits page for the combined river and lake ticket. The page lists lower prices for senior citizens, youths and juniors.
- £125 per season
Day tickets and booking
- PD Pwllheli and District Angling Association Day tickets
Day tickets · Membership
Permits are sold at the outlets listed on the association’s permits page, which include Criccieth Tackle Box, D and E Hughes in Pwllheli, Penrhyn Guns and Pike Newsagents in Porthmadog. Day permits last 24 hours from midnight on the date on the ticket and week tickets seven days.
View club details
Prices by date
Fishing details
- Water type
- Stillwater
- Lake
- 1
- Boat fishing
- Bank only
Stocking and fish species
none stocking · The association says the lake is stocked with rainbow trout to supplement the wild brown trout.
Rules and policies
Fishing rules for Llyn Cwmystradllyn
A permit from the association and a Natural Resources Wales rod licence are needed. Fishing is from 8am until one hour after sunset. Fly, spinner and worm on a single baited hook only; strictly no maggots or ground baiting. Float tackle must not be used with flies. No booby flies. Spinners may have only one treble hook. Six fish limit, and fishing must stop when it is reached. No fish under 8.5 inches (21cm) may be kept. No fishing from the dam, no swimming, and no cleaning of fish at the lakeside or in the area around the lake. The rainbow trout season runs from 20 March to 31 October and the brown trout season from 20 March to 30 September.
Where you'll fish
Location
Approximate locationExact location is hidden at the owner's request..
FishingBeats is an independent guide with no affiliation to the fisheries we list. Listings are editorial and unpaid, and are not supplied or approved by the fishery. See our listings policy. Listing details are compiled by FishingBeats and may change or contain mistakes. Some services, such as tuition, ghillies, or accommodation, may only apply to certain packages and not to standard day tickets. Always confirm pricing, fishing details, and what is included directly with the beat before you book. Spotted something wrong? Email hello@fishingbeats.com and we will correct it.
FAQ
Llyn Cwmystradllyn FAQs
Practical questions anglers ask before fishing Llyn Cwmystradllyn, from tickets to tactics.
01How many rods are allowed on Llyn Cwmystradllyn at any one time?
02What species can I expect to catch on Llyn Cwmystradllyn?
03Do I need to wade, or can I fish from the bank?
04Is a ghillie available, and do I need one?
05Where do I park, and how do I access the beat?
06What tackle should I bring?
07What happens if conditions are poor on the day I've booked?
08Are dogs allowed on the beat?
Worth a read
£20 per rod
Today's rate
