Sea fishing mark

Porth Tywyn

Powered by Met Office

7-day fishing forecast for Porth Tywyn

Tap a day to see the predicted bite rating, best windows, and the environmental signals used.

Mar 22–28, 2026
Next 7 days

Next 7 days

Local tide times

Excellent
Good
Fair
Low

Unlock the next 7 days + best bite windows → £3.99/mo

See the next good day — not just today.

Cancel anytime

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.

6.1/10 overall Beach Carmarthenshire

Last updated: 2 weeks ago

Jump to towns around this mark for more marks and guides.

Explore nearby towns: Burry Port · Pwll · Pembrey · Trimsaran · Llanelli

Zoom and pan to explore access points and nearby marks.

Jump to guide

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

Porth Tywyn fishing guide

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.

Faster from your Home Screen

Install the Where's The Fish app

Open forecasts and saved marks in one tap by installing the app on your iPhone.