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Passport scheme
Check the booking details below before you travel.
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Stillwater
212.5 acres, boat fishing available.
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Bag limit of 6
You may take up to 6 fish. Check the rules below.
About Llyn Cefni
Cefni Reservoir is in the centre of the island of Anglesey in North Wales, over 86 hectares of water. The Passport describes fly fishing for hard fighting wild brown trout and high quality stocked rainbows, with a private car park, a fishing hut and toilet facilities.
It is fly fishing only, with one rod per angler. The daily bag limit is 6 fish per angler and no more than 3 of them may be brown trout; after six fish have been caught and kept, the angler must stop fishing. The Passport sells bank tickets and boat tickets on two separate pages. Anglers under 18 fishing from a boat must be accompanied by an adult, and dogs are allowed on the bank if kept under control but not in boats.
The reservoir is run by Cefni Angling Association. Its club rules are issued with booking and the Passport recommends reading them before you buy a ticket. The club asks for a phone number with each booking. It is booked through the Fishing Passport.
How you can fish here
- Methods
- Fly Only
How to book
Day tickets and booking
- The Fishing Passport Day tickets
Day tickets
Bank fishing is booked on the Passport’s Cefni Reservoir bank page. Boat fishing is a separate ticket on the Passport’s Cefni Reservoir boat page (https://www.fishingpassport.co.uk/fishing/reservoirs/cefni-reservoir-boat-fishingtickets). Neither page printed a ticket price on 2 November 2026, so there are no price rows. Booked through the Fishing Passport.
View fishing agent
Fishing details
- Water type
- Stillwater
- Size
- 212.5 acres
- Boat fishing
- Available
Stocking and fish species
none stocking · The Passport describes high quality stocked rainbows alongside wild brown trout.
Rules and policies
Fishing rules for Llyn Cefni
Fly fishing only with conventional rod and line. One rod per angler. Daily bag limit 6 fish per angler, no more than 3 brown trout; after six fish are caught and kept the angler must stop fishing. No fish under 10 inches to be taken. Season 20 March to 17 October. Dogs allowed on the bank if kept under control, not in boats. Anglers under 18 in a boat must be accompanied by an adult. Not covered by the Wash-Off policy. Club rules apply and full details are issued with booking. National byelaws apply, and a Natural Resources Wales rod licence is needed.
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 Cefni FAQs
Practical questions anglers ask before fishing Llyn Cefni, from tickets to tactics.
01How many rods are allowed on Llyn Cefni at any one time?
02What species can I expect to catch on Llyn Cefni?
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
Passport scheme
Ask when you book
