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6.1 · Rocks · Gloucestershire
A powerful upper Bristol Channel rock-and-mud foreshore beneath the red Aust Cliff by the M48 Severn Bridge. Huge tides and fast flow carve deep gutters; most action comes on the first push of the flood and around dusk. Expect summer/autumn bass and mullet, with flounder, eels and winter whiting/cod. Heavy grip leads and rotten-bottom rigs are essential. Take great care with rapidly flooding tides, sticky mud and occasional cliff falls.
Today · Best available
Best available: 21:00-00:00 around the rising tide
Most likely species: Bass and Conger Eel
Fair conditions. Best available around 21:00-00:00 around the rising tide, but no window reaches the strong threshold today. Good chance of Bass and Conger Eel.
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
Wednesday 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.
Premium unlocks exact windows, tactics and alerts.
Jump to towns around this mark for more marks and guides.
Explore nearby towns: Beachley · Olveston · Pilning · Tutshill and Sedbury · Chepstow
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.
Aust Cliff sits on the English bank of the Severn Estuary beside the old Severn Bridge (M48), famous for its colossal tidal range and chocolate‑brown, fast water. It’s a challenging but rewarding mark for experienced estuary anglers, with seasonal runs of bass, codling and whiting, plus the chance of smoothhound and rays on the right tides. Approach with respect: the mud and tide here can be unforgiving, but fished safely it’s a classic Severn venue.
Access is from the Aust/Severn View side of the M48, with parking either at the motorway services or down in the Old Passage hamlet by the former ferry slip. Terrain is a mix of firm ground, rough stone, and lethal estuary mud—never step onto the mudflats.
This is a highly seasonal estuary mark; fish move with temperature and salinity. Expect dirty water species and migratory visitors.
Strong tides dictate simple, robust tactics: bottom fishing with heavy grippers and short snoods. Scent wins in coloured water.
The Severn has one of the world’s biggest tidal ranges; flow is extreme on springs and can be unfishable. Neaps and mid‑range tides are usually most productive and safer.
This is a serious estuary venue with soft mud, rapid flooding, and unstable cliffs. If in doubt, don’t go—fish with a partner and stay on firm ground only.
You’re close to a motorway services, which is as convenient as it gets on the Severn. Local amenities improve comfort but not safety.
This mark rewards preparation and tide knowledge. Keep things simple, smelly, and secure.
Rules here are a mix of national sea fishing law, local byelaws, and site protections. Always verify current rules before you go.
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