Flounder Fishing in Gwynedd

Gwynedd has 29 shore marks rated for flounder. They're ranked below by how strongly flounder show at each spot, with today's live conditions beside every mark — so you can pick a spot that's worth fishing right now, not just on paper.

When to go

Out of season — best Oct–Mar
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best months: Oct–Mar · green months are prime, the outlined box is this month.

Tide Fish the flood

Time of day Daylight sessions fish best

Best flounder marks in Gwynedd

Ranked by how strongly flounder show at each mark. The chip on the right is today's live fish forecast.

Barmouth Estuary Hotspot for flounder
Today 65 Good

Bread-and-butter catch on lug/rag or small fish baits; work channel edges on the flood and early ebb.

Aberdyfi (Aberdovey) Harbour Wall Hotspot for flounder
Today 65 Good

Best on peeler/crab, rag or lug; fish the run of tide near channel edges on a light/medium ledger.

Dyfi Estuary (Aberdyfi) Hotspot for flounder
Today 65 Good

Common inside the estuary over sand/mud; rag/lug, maddies or small peeler; fish the last of flood into slack.

Borth-y-Gest Harbour Hotspot for flounder
Today 62 Fair

Best target; fish the flooding tide over mud/sand with rag/lug or small crab; keep leads light to avoid snagging.

Porthmadog Harbour Wall Hotspot for flounder
Today 60 Fair

Very common in the harbour; fish ragworm/lug or small crab on a running ledger close to the wall on the flood/early ebb.

Barmouth Bay Reliable for flounder
Today 65 Good

Common near the estuary influence; peeler/rag tipped with lug, fished in channels on the flood.

Pwllheli Harbour Wall Reliable for flounder
Today 65 Good

Good in spring/autumn; small worm baits (rag/lug) on a running ledger, fish the edge of tide flow where sand meets stones.

Barmouth Beach Reliable for flounder
Today 65 Good

Common in/near the estuary influence; take rag, lug or small strips. Work the first trough and any gutters on a steady retrieve.

Friog (Morfa Mawddach) Reliable for flounder
Today 65 Good

Common around the estuary influence; rag/lug or small crab; fish the edge of channels on the ebb.

Aberdyfi (Aberdovey) Beach Reliable for flounder
Today 65 Good

More likely closer to the estuary influence and in coloured water; worm baits and shorter casts can score.

Black Rock Sands Reliable for flounder
Today 65 Good

Often close in over mixed sand; rag or lug, don’t always need big range—work shallow gutters on the flood.

Criccieth Beach Reliable for flounder
Today 65 Good

Often close in, especially after rougher weather; ragworm, lug or small strips, works well at dusk.

Llanbedrog Beach Reliable for flounder
Today 65 Good

More likely near any streamier outflow/softer ground; peeler crab or worm baits, fished close-in on the flood.

Tywyn Beach Reliable for flounder
Today 65 Good

Shows in coloured water after a blow; rag/lug or small fish strips work, especially near any gutters and shallow run-throughs.

Dyffryn Ardudwy Beach Reliable for flounder
Today 65 Good

Often closer in than plaice; lug/rag or fish strip; can show well in coloured water and at night.

Fairbourne Beach Reliable for flounder
Today 65 Good

Often close in near any estuary influence; peeler/crab or small fish baits, keep leads light if surf allows.

Tonfanau Beach Reliable for flounder
Today 65 Good

Often close in; rag/lug or small crab, fish the last of flood into ebb in coloured water.

Abersoch Main Beach Worth a try for flounder
Today 65 Good

Takes lug/rag; look for any slight colour or freshwater influence after rain and work the nearer channels.

Pwllheli Beach (South Beach) Worth a try for flounder
Today 65 Good

Often closer in and around any freshwater influence; rag/lug or small crab baits work on mixed ground.

Abersoch (Llanengan) Beach Worth a try for flounder
Today 65 Good

Often close in on smaller tides and after rain/run-off. Rag or lug on a simple running ledger; try the first trough and shallow gulleys.

Borth-y-Gest Worth a try for flounder
Today 62 Fair

Shows in the softer areas and near any freshwater influence; ragworm and small crab baits work well.

Harlech Beach Worth a try for flounder
Today 62 Fair

Best after rougher seas and near any darker patches/gutters; lug or rag, keep leads light enough to fish the slope.

Llanaber Beach Worth a try for flounder
Today 65 Good

Can show where freshwater seepage/soft sand patches occur; rag or lug, especially on the ebb.

Pwllheli (Pen-y-Chain) Beach Worth a try for flounder
Today 65 Good

More likely near any freshwater influence/low-water gutters; good on smaller baits in coloured water.

Llandanwg Beach Worth a try for flounder
Today 62 Fair

Best around any streamy patches and closer range; rag, lug or peeler crab, especially on smaller tides.

Plus 4 more rated marks — browse every mark in Gwynedd.

Planning ahead? The live fish forecast map compares these marks across the week.

Tactics for flounder

Top baits, best first

  1. Ragworm
  2. White Rag
  3. Blow Lug
  4. Peeler Crab

Rigs that work, best first

  1. Long & Low
  2. Running Ledger
  3. Two-Hook Flapper

Full tactics, seasonal detail and more baits are on the Flounder species guide.

Flounder fishing elsewhere