A south-westerly has held for 9 hours, running warmer than the water (15°C air against 13°C water). Expect fish at the north-eastern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. Move along the bank and try a different angle or depth before changing fly.
Watch for Sedge towards evening — this could be the best window of the day.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
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Hatch predictions
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Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
A reasonable day here, though wind isn't quite in the sweet spot.
Cwm Silyn is a remote upland llyn in a glacial cwm beneath the Nantlle Ridge crags, west of Snowdon — ten hectares of wild brown trout and a relict Arctic char population. A mile's walk from Llanllyfni and you're somewhere a Welsh fly fisher would call proper mountain water. The SGLL ticket covers it; the char take a four-fish daily limit alongside the regular trout bag.
Cwm Silyn is a remote upland llyn in a glacial cwm beneath the Nantlle Ridge crags, west of Snowdon — ten hectares of wild brown trout and a relict Arctic char population.
A south-westerly has held for 9 hours, running warmer than the water (15°C air against 13°C water). Expect fish at the north-eastern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. Move along the bank and try a different angle or depth before changing fly.
Watch for Sedge towards evening — this could be the best window of the day.
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Hatch predictions
Top nymph shown — see all 2 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top prey shown — see all 5 with Pro.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
A reasonable day here, though wind isn't quite in the sweet spot.
Cwm Silyn is a remote upland llyn in a glacial cwm beneath the Nantlle Ridge crags, west of Snowdon — ten hectares of wild brown trout and a relict Arctic char population. A mile's walk from Llanllyfni and you're somewhere a Welsh fly fisher would call proper mountain water. The SGLL ticket covers it; the char take a four-fish daily limit alongside the regular trout bag.
