Cable Bay

6.8 · Beach · Isle of Anglesey

Cable Bay (Porth Trecastell) is a small, sheltered sandy cove with rocky edges and scattered weed-covered boulders, giving mixed ground fishing at short range. Access is easy via the coastal path and nearby parking, then a short walk onto the sand or rocks; it’s a useful venue when the open coast is rough. Expect clean sand for flatfish and rays in the bay, with wrasse, pollack and occasional conger tight to the kelpy fringes and rockier sides.

Should you fish Cable Bay?

48 Low

Today · Best available

Best available: 18:00-21:00 around the falling tide

Most likely species: Plaice and Ballan Wrasse

Poor conditions. Best available around 18:00-21:00 around the falling tide, but no window reaches the strong threshold today. Good chance of Plaice and Ballan Wrasse.

W 6 mph Rain 65% High tide 03:16

Consider a backup mark if conditions do not improve.

Plan this mark

7-day fishing forecast for Cable Bay — 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.

Tuesday 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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Cable Bay is best treated as a short-range feature mark rather than a distance beach. The clean sandy middle suits flatfish, rays and dogfish, while the rocky, kelpy edges are the better lines for bass, pollack, wrasse and the chance of conger after dark. A little surf and colour can help, but heavy weed, a big blow or awkward crosswinds can quickly make presentation difficult.

  • Know when to fish the sandy middle instead of the kelpy edges
  • Use the flood to target the bay’s gutters and deeper channel
  • Switch tactics fast when weed builds in the cove
  • Pick the right Cable Bay species for surf, calm or darkness
  • Avoid wasting casts beyond the fish-holding features

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Forecast tuning currently supports Bass and Mackerel — more species are on the way.

Overall rating

6.8 /10

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

Category scores

Catch Potential 6/10
Species Variety 7/10
Scenery & Comfort 9/10
Safety 7/10
Accessibility 8/10

Local knowledge

Cable Bay fishing guide

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

Cable Bay on Anglesey is a small, sheltered sandy bay with rocky edges that can fish well for a mix of close‑range species, especially when there’s a bit of surf or coloured water. It’s not a “big-cast” venue so much as a mark for working features—gut, corner rocks, and any kelp line—methodically.

  • Best thought of as a light-to-medium tackle beach mark with reef influence at the sides
  • Can produce quick sport in the right conditions, but it’s often condition-dependent (swell, weed, clarity)
  • Ideal for anglers who enjoy reading water: seams, channels, and any darker patches of mixed ground

Cable Bay sits on the north coast of Anglesey and is reached via local roads to the small beach area, then a short walk onto sand. Access is generally straightforward in calm weather, but the bay’s corners and any rock platforms require care.

  • Access is typically via public coastal approaches and the beach itself; expect a short walk-in from nearby parking areas
  • The main fishing is from sand with opportunities from rocky corners/edges depending on tide and sea state
  • After heavy rain, paths and grassy approaches can be slippery, and sand can be soft in places

Cable Bay’s mixed habitat—sand with nearby rock/weed—means you’re fishing for classic inshore species rather than deep-water specialists. Catches vary a lot with season, water clarity, and whether surf is running.

  • Bass: often the headline target, especially with surf, dusk/dawn, and around the bay edges
  • Flounder (and occasional other flatfish): best in calmer conditions and when you can find a trough/gutter
  • Dogfish: common after dark, particularly when a bit of scent is in the water
  • Wrasse: more likely if you work the rocky edges with appropriate tactics
  • Mackerel: possible when shoals push in close in summer, mainly on lures/feathers from the rockier areas
  • Pollack/coalfish: occasional from rougher ground when conditions suit (more likely around structure)

This is a mark where presentation and placing a bait into the right feature usually beats brute distance. Adjust your approach depending on whether you’re fishing clean sand or bringing the rocky edges into play.

  • Bottom fishing (beach): keep it simple with a running ledger or short snood paternoster for flounder, dogfish and general species
  • Bass bait tactics: fish a single hook, streamlined rig into any gutter/edge; in surf, a slightly longer snood can help bait movement
  • Lure fishing: work soft plastics, minnows, or small metal lures along the edges and any rip line for bass/pollack/mackerel
  • Float/ledger near rocks: for wrasse, fish close to structure with a robust hooklength and be ready to steer fish away from kelp
  • Baits that commonly score: lugworm, ragworm, crab (where appropriate), sandeel, and fish baits for dogfish—match bait to target and conditions
  • Tackle balance: medium surf rods are fine for bait work; a spinning setup covers most lure opportunities without overkill

Cable Bay is sensitive to sea state: a little swell and colour can switch it on, while heavy weed or a big blow can make it hard work. Tide height changes how much of the bay fishes and whether the rocky edges are usable.

  • Best conditions for bass: light-to-moderate surf, coloured water, and low light (dawn/dusk/night)
  • Best conditions for flatfish: calmer seas with a defined gutter/trough and manageable drift
  • Tide planning: explore on a low tide to map gutters and hard patches, then fish those lines as the tide floods
  • Weed factor: after prolonged swell or certain wind directions, expect weed and kelp to collect—scale down rigs or switch to cleaner areas
  • Wind: onshore winds can build surf and colour quickly; strong crosswinds can make bait presentation and line control difficult

It’s a relatively sheltered venue by Anglesey standards, but the usual North Wales coastal hazards still apply—especially around wet rock, swell, and rising tides. The beach itself is the safest option in most conditions.

  • Rocks: treat the corners and any ledges with caution—wet algae and sudden swell can be dangerous
  • Tide cut-off: avoid pushing too far around corners on a rising tide; plan an exit route before committing
  • Night fishing: use a headtorch and keep a clear line of retreat; avoid unfamiliar rock ground in the dark
  • Surf safety: even small surf can knock you off balance when wading—there’s rarely a need to wade far here
  • Accessibility: the beach is generally easier than rock marks, but surfaces can be uneven and soft underfoot

Facilities are limited and depend on the immediate access point and season. Plan as if you’ll be self-sufficient for bait, food, and basic needs.

  • Limited on-site amenities; bring water, spare tackle, and a basic first-aid kit
  • Parking is typically nearby but can be tight in good weather—arrive early when possible
  • Mobile signal can be variable along parts of the Anglesey coast; let someone know your plan if fishing late

Cable Bay rewards anglers who keep mobile and fish the features rather than sitting in one spot for hours. Spend time watching the water before you cast and you’ll usually find the most productive line.

  • Work the seams and darker water where the sand meets broken ground—predators patrol these edges
  • If bites are scarce, move 20–30 yards and re-check depth: a small gutter can hold most of the fish in the bay
  • In weedy conditions, shorten traces and use more streamlined leads to reduce snagging and weed build-up
  • For bass, prioritise low light and a bit of surf; for flounder, go for cleaner water and steady bait presentation
  • Keep tackle losses down by learning where the rough ground starts—fish “just off” it rather than directly in it until you’ve mapped it

There’s no widely publicised, single blanket ban that clearly applies to “Cable Bay” as a named angling mark, but local restrictions can exist due to conservation, access rules, or temporary signage. Treat this as a check-before-you-fish venue and follow local guidance on the day.

  • Check for local signage at access points regarding permitted activities, seasonal restrictions, or protected areas
  • Anglesey has sensitive coastal habitats—avoid damaging dunes, vegetation, and rockpool life, and take litter and discarded line home
  • If targeting bass, ensure you follow current Welsh/UK rules (sizes, limits, methods); regulations can change, so verify with official sources
  • Be mindful of other beach users and keep rods and lines clear of swimmers, paddlers, and dogs, especially in summer