Llynnau Cwm Silyn
Caernarfon, Wales
The Llynnau Cwm Silyn are situated in the hills to the south of Llyn Nantlle. These remote lakes, nestled in the hear ...
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Llyn Nantlle
Water managed by Seiont Gwyrfai & Llyfni fishing Society
Type
Lake
Species
Brown trout, Salmon, and Sea trout
Migratory run
Salmon run from late June, peaking in July and largely over by the end of August. Sea trout run from June, building to a peak in August and tailing off through September. Spring tides every ~2 weeks bring fresh fish in from the sea to the river mouths.
Next spring tides: 30 Jul – 2 Aug
Sea trout & salmon run Jun–Sep
Low alkalinity
High alkalinity indicates water fertility and can signal the presence of larger trout. Fish in alkaline waters have a wider variety of invertebrates to feed on.
Shallow
The depth of a lake has significant impacts on its ecology. Reduced heat and light in deep lakes inhibit algal growth.
Low shoreline complexity
A lake with a high shoreline complexity will have numerous bays, points and peninsulas.
Low elevation
Lakes at a higher altitude can take longer to warm up during the season and may not fish well until summer.
Small
Larger lakes with good spawning often contain lots of smaller trout. Smaller lakes with limited spawning can produce larger trout.
Llyn Nantlle is one of the very few lakes in Wales & England where fish for salmon and sea trout from a boat. It's also an excellent wild brown trout fishery where traditional patterns work best.
It's boat fishing only and booking is strongly advised through Cwellyn Arms, Rhyd Ddu. You can contact them on 01766 890321.
Electric outboards only and you'll need to bring your own.
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