Gwynedd

Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn

Passport scheme Season 20 Mar to 17 Oct

Passport scheme
Check the booking details below before you travel.
Stillwater
Bank fishing only.
Bag limit of 8
You may take up to 8 fish. Check the rules below.

About Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn

Cwm Silyn is a remote llyn in the heart of Snowdonia that holds brown trout. The Passport says it is very lightly fished because of its distance from the road, an approximate one mile (1.59km) walk, and advises anglers to equip themselves adequately and always tell someone their destination. The society’s website calls it truly wild, with prolific wild brown trout, a drive then about a mile on foot that is easy and very scenic walking, and says you need only a fly rod.

How to book

Day tickets and booking

FP

The Fishing Passport Day tickets

Day tickets

The beat page prints no ticket price on 28 October 2026: tickets and prices load on the booking page by date, and it showed no dates. One ticket covers every Seiont, Gwyrfai and Llyfni Fishing Society beat on the Passport. Booked through the Fishing Passport.
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SG

Seiont, Gwyrfai and Llyfni Fishing Society Day tickets

Day tickets

Seiont, Gwyrfai and Llyfni Society water. Day tickets are sold through the Fishing Passport, and the society sells its own season licences.
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Fishing details

Water type: Stillwater
Lake: 1
Boat fishing: Bank only

Stocking and fish species

Brown Trout

Rules and policies

Catch & release

Bag limit: 8 fish

EA rod licence required

Dogs allowed

Ghillie available

Ghillie required

Season: 20 Mar to 17 Oct

Fishing rules for Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn

Prawn fishing is prohibited. The catch limit is 8 fish in any continuous 24 hours, including no more than 4 char. Fish caught on society waters may not be sold. No dogs. National byelaws apply.

Where you'll fish

Location

Approximate location

Exact 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

Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn FAQs

Practical questions anglers ask before fishing Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn, from tickets to tactics.

01How many rods are allowed on Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn at any one time?

The rod limit for Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn is listed on the beat page — check before booking, as limits vary by season and fishery preference.

02What species can I expect to catch on Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn?

Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn holds Brown Trout. The water is unstocked, relying entirely on the wild population.

03Do I need to wade, or can I fish from the bank?

Wading arrangements for Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn are listed on the beat page — contact the provider if you need to confirm before arriving.

04Is a ghillie available, and do I need one?

No ghillie service is listed for Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn — contact the provider directly if you'd like informal guidance on your first visit.

05Where do I park, and how do I access the beat?

Parking details for Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn are shown on the beat page, including a map pin where one is provided. Always confirm access arrangements with the provider when you book.

06What tackle should I bring?

For most chalk stream beats on the , a 9-foot 4- or 5-weight rod with a floating line is the standard setup. The fly recommendations section on the Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn page suggests the most effective patterns month by month.

07What happens if conditions are poor on the day I've booked?

River conditions can change quickly, especially after rain. Contact the provider as early as possible if you're concerned about Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn — many are happy to offer an alternative date if the river is unfishable. Cancellation and rescheduling policies vary by provider; check the notes on the booking page or ask when you book.

08Are dogs allowed on the beat?

Dogs are not listed as permitted on Seiont, Gwyrfai and Llyfni Fishing Society, Cwm Silyn. Check the Beat Rules section on the page or contact the provider before bringing a dog, as policies can vary by season and stretch of the .