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6.3 · Beach · Gwynedd
Tonfanau Beach is a long shingle-and-sand shore just north of Tywyn, backed by the railway and low dunes, with easy walk-on access from the lane/parking by the beach. It fishes as an open-coast surf mark with a gentle slope and patches of mixed ground; most anglers target flatfish and school fish at range, with rays/dogfish showing in summer and occasional bass around rougher edges and flood tides.
Today · Best available
Best available: 21:00-00:00 around the rising tide
Most likely species: Lesser Spotted Dogfish and Whiting
Fair conditions. Best available around 21:00-00:00 around the rising tide, but no window reaches the strong threshold today. Good chance of Lesser Spotted Dogfish and Whiting.
Fishable, but pick your timing carefully.
Scores and best windows are weighted for .
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.
Next 7 days · Aug 6–12, 2026
Local tide times
Tuesday looks better than today. Unlock the week to see its score and exact window.
Fishing rating
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Bite opportunity
Comfort
Safety check
Strong spring tides — the sea rises faster and reaches further up the shore than usual, so allow extra margin on access routes and cut-off points.
The fishing rating combines opportunity and comfort. Always check local sea conditions; the safety check is guidance, not a guarantee.
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.
Tide curve will appear once tide data is available.
All windows will appear once the forecast is loaded.
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Why this window?
Bite
Comfort
Safety
What's moving this score
This window is scored for — its season, preferred tide, temperature and sea state are weighed alongside the general conditions below.
Mixed signals; focus on timing and location.
Trip planner
Choose when you're free and what you want to catch. We'll show the best tide, weather window and method for this mark.
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Jump to towns around this mark for more marks and guides.
Explore nearby towns: Tywyn · Bryncrug · Llwyngwril · Aberdovey · Friog
Zoom and pan to explore access points and nearby marks.
Jump to guideForecast tuning currently supports Bass and Mackerel — more species are on the way.
Overall rating
Blend of catch potential, access, safety, and overall experience.
Category scores
Local knowledge
Practical access, seasons, methods, tides, safety and facilities for this mark.
Tonfanau Beach is a classic mid‑Wales mixed mark: a broad shingle/sand beach with rock influence, sitting beneath steep, beautiful scenery and often fishing best when there’s a bit of colour in the water. It can produce typical Cardigan Bay species for the mobile shore angler, but it’s also exposed and remote-feeling, so planning and safe access matter.
Tonfanau sits on the Gwynedd coast near the A493, with access via local lanes/footpaths down to the shore. The walk-in is straightforward in good conditions but can feel committing once you’re on the beach, especially if you’ve timed it poorly with the tide.
You’re fishing a venue that can throw up a “proper mix” depending on season, swell, and where you place your bait. Expect a bread‑and‑butter range with occasional better fish when conditions line up.
This is a venue where adapting to the ground in front of you pays off: fish clean when you need distance and easier retrieves, and fish heavier/abrasion‑resistant when you’re near snags. Keep rigs simple and robust, and let the conditions dictate bait size and presentation.
Tonfanau tends to fish best when there’s water movement and a little colour—too calm and clear can make it scratchy, while too much swell can make it unfishable. Time your session around being able to safely access and retreat, and use the tide to help you find depth close in.
This is an exposed beach and can feel remote; treat it with respect, especially in swell or on bigger tides. Footing varies between sand and shingle, and conditions can change quickly.
Facilities are limited right at the beach, so go self-contained and plan ahead. Nearby villages/towns provide the usual basics, but don’t assume anything is available at the mark itself.
Tonfanau rewards anglers who read the beach and keep moving until they locate fishable depth and structure. Think in terms of “features first”: find the gutters, seams, and any broken ground, then match your rig to the retrieve.
I’m not aware of a widely-publicised, blanket ban on sea angling at Tonfanau Beach itself, but local restrictions can exist and can change (seasonal wildlife measures, access limitations, or site-specific bylaws). Always treat signage on arrival as definitive and check official sources if in doubt.
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