Porth Tywyn

6.1 · Beach · Carmarthenshire

Porth Tywyn is a small open-coast shingle/sand bay on the Carmarthenshire shoreline with low rocky edges and rougher ground close in, giving a mixed beach-and-reef style of fishing. Access is straightforward from nearby parking and a short walk onto the shore; most anglers fish the cleaner middle on bigger tides for flatfish and school fish, or work the rocky margins and adjacent rough for bass and wrasse in calmer conditions.

Should you fish Porth Tywyn?

65 Good

Today · Best window

Best window: 03:00-06:00 around the rising tide

Most likely species: Bass and Lesser Spotted Dogfish

Good conditions. Best around 03:00-06:00 around the rising tide. Good chance of Bass and Lesser Spotted Dogfish.

SW 3 mph Rain 2% High tide 07:31

Worth fishing if you can hit the best window.

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7-day fishing forecast for Porth Tywyn — 7-day forecast

Scores and best windows are weighted for .

Met Office Met Office · Open-Meteo

Where the data comes from. Weather and sea-state readings come from the Met Office and Open-Meteo forecast models, refreshed several times a day. High and low water are taken from tide-station predictions for this stretch of coast.

How the score works. Each window is scored 0–100 from the signals that most reliably move fish inshore: tide movement (a running tide carries food, so the last of the flood and first of the ebb are usually the prime spells), wind speed and direction (onshore wind stirs food into the surf — up to the point it makes fishing hard), sea state (a little wave and swell movement helps, heavy swell hurts), and weather — rain, temperature and light. Behind the headline number we score bite opportunity and comfort separately, and run a separate safety check on wind and swell. The size of the tide counts too: spring tides move more water than neaps, so the tidal range for this stretch of coast is weighed alongside the tide's direction, your target species and this mark — and unusually big springs strengthen the safety check, because the water rises faster and covers more ground.

Your target species counts. Pick a species below and the score also weights what we know about it — its season, preferred sea temperature, tide stage and sea state, and whether it feeds by day or night.

The rating is guidance, not a guarantee — conditions change fast on the coast, so always judge the sea in front of you before you fish.

Monday looks better than today. Unlock the week to see its score and exact window.

· windows & tide

Spring vs neap tides. Spring tides have a larger difference between high and low water, so more water moves on each tide — usually stronger flow that stirs up food and gets fish feeding. Neap tides have a smaller range and generally gentler movement. The range here is compared with what is normal for this stretch of coast, and the cycle swings between springs and neaps roughly every week, following the moon.

Big spring tides: the water rises faster and covers more ground than usual — double-check access routes and cut-off points before you fish.

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Porth Tywyn is a conditions-led shingle and sand beach with low rocky edges, rougher ground close in, and a cleaner middle section that usually gives the most reliable mixed-species fishing. It is rarely about casting as far as possible; the better decisions are finding a gutter, darker water line, surf seam or transition between clean and rough ground, then matching the target species to that feature. Bigger tides, a light to moderate onshore swell and the last of the flood into early ebb are the key triggers.

  • Know when to fish the clean middle instead of the rocky edges.
  • Time the last flood and early ebb for the best Porth Tywyn window.
  • Pick the right target when the water is coloured, clear, calm or surfy.
  • Use the near gully for bass instead of blindly casting long.
  • Know when to abandon heavy surf and switch plan.

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Fish forecast key

Excellent (80+) Good (65-79) Fair (50-64) Poor (0-49)

Overall rating

6.1 /10

Blend of catch potential, access, safety, and overall experience.

Category scores

Catch Potential 6/10
Species Variety 6/10
Scenery & Comfort 7/10
Safety 6/10
Accessibility 7/10

Local knowledge

Porth Tywyn fishing guide

Practical access, seasons, methods, tides, safety and facilities for this mark.

Porth Tywyn is a small, open-coast beach mark on the Carmarthenshire shoreline that can fish well for classic South Wales species when conditions line up. It’s the sort of place where water colour, surf height and tide timing matter more than fancy tackle—get those right and it can be a very rewarding session.

    • A mainly beach/surf mark with fish moving along the troughs and gutters.
    • Best thought of as a “conditions” venue: it can be quiet in clear, calm water and switch on quickly in a bit of swell.
    • Suits anglers who are happy to read the sand, move to find a gutter, and fish into dusk/dark.
    • Expect a mixed bag rather than one guaranteed target every trip.

Porth Tywyn sits on the Carmarthenshire coast and is approached as a beach mark rather than a harbour or rock platform. Access is generally straightforward, but like many smaller Welsh coves and beaches it can involve soft sand, steep paths, or short walks depending on where you park.

    • Approach the beach and choose a swim based on visible features (darker water, channels, or a defined surf line).
    • After storms, access paths and sand levels can change; allow extra time if you’ve not been recently.
    • If the beach is narrow on bigger tides, be prepared to move as the water pushes in.
    • Take care around any small streams/ditches draining the beach—they can cut deeper channels than they look.

This is a typical Carmarthenshire surf venue where you’re mainly targeting bottom-feeding species that patrol close in, especially when there’s a bit of colour in the water. Seasonal runs vary year to year, so treat species as “likely” rather than guaranteed.

    • Bass: often best around low light, on bigger tides, and when there’s a bit of surf or coloured water.
    • Flounder: can show in the margins, especially near any freshwater influence or calmer corners.
    • Dogfish and small rays (where present locally): common picks when fishing baits hard on the deck.
    • Whiting/codling (if they appear in the wider area in colder months): occasional, depending on annual conditions.
    • Mullet are generally less of a feature on open surf marks than in harbours/estuaries, but may appear locally in calm spells near outflows.

Porth Tywyn is best approached with solid, simple surf tactics: fish baits on the bottom, cover ground, and adjust to how the sea is behaving. If you can identify a gutter or a rip line, you’ll usually do better than sitting anywhere on featureless sand.

    • Standard beachcaster with a clipped-down rig for distance when the surf is modest; switch to more robust rigs/weights as the sea builds.
    • For bass: fish bigger, scentier baits in the surf line; work the near gully on the flood and the deeper channel on the ebb.
    • For flounder: scale down hook size and present a neat bait; target calmer water inside a bank or near any outflow.
    • Use grip leads when there’s lateral pull; in lighter conditions, a plain lead can give a more natural presentation.
    • Keep a spare rig set for rough ground only if you find mixed shingle/stone—most of the time you’re fishing sand, but storm movement can expose harder patches.
    • Be ready to shorten range: many bass and flounder are caught very close in, especially after dark or in surf.

Like most exposed beaches in this part of Wales, Porth Tywyn tends to improve with a bit of movement and colour, and it can be hard work in bright, clear, flat conditions. Tide state influences how much beach you have and where the fish patrol, so plan around both fishing and safe access.

    • Best general window: the last couple of hours of the flood and the first part of the ebb, especially into dusk and early night.
    • Bigger tides often fish better for bass, pushing food in and creating defined surf gutters.
    • A light to moderate onshore swell that colours the water can be ideal; too much surf can make holding bottom and bite detection difficult.
    • In calm, clear water: consider smaller baits, longer snoods, lighter leads (where safe), and fish low light.
    • After heavy weather: look for freshly cut channels and darker water lines—these can become natural feeding lanes.

This is a straightforward beach mark, but it still demands respect—surf, soft sand, and rapidly filling gullies can catch people out. If you’re fishing into darkness, take extra care with navigation back off the beach.

    • Check the tide table and watch how quickly the water is rising; don’t get cut off against dunes/cliffs or across a channel.
    • Be cautious around any rip currents and steeply shelving sections—waves can surge unexpectedly.
    • Wear suitable footwear for soft sand and potential shingle patches; consider a wading belt if you ever step into water (often unnecessary on a surf beach).
    • In winter or rough conditions, keep well back from the swash line and avoid turning your back on the sea.
    • Accessibility varies by approach: some access points may be easier than others; if mobility is limited, scout in daylight first.

Facilities around smaller coastal marks can be limited and can vary seasonally, so plan to be self-sufficient. Even where there are nearby villages, amenities may close early outside peak months.

    • Bring water, headtorch, spare batteries, and a basic first-aid kit.
    • Take a rubbish bag and remove all line/old bait packaging—beaches here are shared with walkers and wildlife.
    • Mobile signal can be patchy on parts of the coast; let someone know your plan if fishing alone.
    • For bait and tackle, you may need to stock up in larger nearby towns rather than relying on immediate local supply.

Fishing Porth Tywyn well is mostly about reading the beach and not being afraid to move. A short walk to find a proper gutter or a seam of coloured water is often the difference between a blank and a few fish.

    • Arrive in daylight, even if you plan to fish after dark, and identify gutters, deeper cuts, and any outflows.
    • Start with a “search cast” to find depth changes; once you locate a trough, keep your bait in it rather than continually casting to the same distance.
    • If weed is present after a blow, shorten casting range and fish cleaner water inside; re-cast little and often to keep baits fishing.
    • In surf, use robust, fresh baits and tidy presentations—poorly bound baits get stripped quickly.
    • Keep an eye out for bird activity and baitfish showing; bass often aren’t far behind.

There is no single, universally applicable ban known for this mark, but Welsh shore venues can be affected by local byelaws, seasonal restrictions, and protected-area rules. The correct position can change over time, so treat this as a “check before you fish” venue rather than assuming.

    • Check for on-site signage about access, dog controls, conservation zones, and any restrictions on bait collection.
    • If the beach sits near or within a protected area, additional rules may apply (for example, around disturbance or collecting); confirm via official local/NRW information.
    • Observe national sea angling rules on sizes and retention; if unsure, return fish carefully.
    • Park considerately and keep to public access routes—some approaches may cross sensitive land or have seasonal limitations.