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5 coastal counties now covered: Kent, East Sussex, West Sussex, Hampshire, and the Isle of Wight.
6.5 · Rocks · Isle of Wight
Castlehaven is an exposed south-coast rock mark close to St Catherine’s Point, reached by a steep, uneven descent and fished from rough ledges over kelp, gullies and deeper broken ground. It is primarily a summer daylight wrasse, pollack and mackerel venue, while evening and darkness can produce conger, huss and dogfish; swell and the strong tidal pull around the point can make it unforgiving.
Today · Best window
Best window: 06:00-09:00 around the rising tide
Most likely species: Ballan Wrasse and Corkwing Wrasse
Good conditions. Best around 06:00-09:00 around the rising tide. Good chance of Ballan Wrasse and Corkwing Wrasse.
Worth fishing if you can hit the best window.
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 13–19, 2026
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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.
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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: Niton · Whitwell (Isle of Wight) · Chale Green · Ventnor · Wroxall
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Forecast tuning currently supports Bass and Mackerel — more species are on the way.
Fish forecast key
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.
Castlehaven is a remote, rough-ground south-coast mark beneath the Isle of Wight’s Undercliff, valued more for its clear water, kelp, rock gullies and summer species than for easy, all-weather fishing. It is a demanding venue: the fishing can be excellent in the right conditions, but access and sea state should always decide whether a session is sensible.
Castlehaven lies on the exposed south side of the Isle of Wight, in the Undercliff/St Catherine’s Point district, with the sea immediately open to weather from the south and south-east. Reaching the water normally involves a walk and potentially steep, uneven ground, so travel light and assess the route before committing to it.
Castlehaven’s mixed rock, kelp and deeper-water gullies can produce a good variety of south-coast species, with the best prospects normally arriving as the water warms. Exact catches are highly dependent on swell, water clarity, tide and the particular accessible ledge being fished.
Tackle should be chosen for abrasion resistance and control rather than maximum casting distance. The key is to present a bait or lure close to fish-holding structure while accepting that the most productive ground is also the most snaggy.
Sea state matters more at Castlehaven than any single tide rule. A moderate, fishable movement of water can improve sport, but a south-coast swell can make the shoreline unsafe very quickly.
This is not an easy-access family beach mark and should not be treated as one. The combination of cliff instability, isolated rock platforms, tidal water and a long return route makes conservative decision-making essential.
There are no dependable facilities at the fishing edge, so Castlehaven should be approached as a self-sufficient, remote session. Prepare before leaving the nearest village and take all litter, discarded line and bait packaging home.
Castlehaven rewards a quiet, observant approach rather than simply casting as far as possible. Spend time watching the water from above and identify kelp seams, darker gullies, current lines and a safe place to land fish before setting up.
There is no clear basis to describe Castlehaven as a blanket no-fishing mark, but access restrictions, conservation requirements and fishery rules can apply locally and can change. Check current official notices, landowner signage and national fisheries guidance before fishing.
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