Where’s The Fish? Logo for Where's The Fish?

Overview

How to target

Sea Trout
Species ID: sea-trout

Sea Trout

Sea trout (sewin) are most reliably encountered from spring through early autumn around river mouths, surf beaches adjacent to estuaries, saltmarsh creeks and rocky points near sal...

🌊 Tide: flood 💨 Wind: calm 📅 Peak: Apr, May, Jun, Jul, Aug, Sep, Oct

Best tide

flood

Moon

neap

Season

Apr, May, Jun, Jul, Aug, Sep, Oct

Wind

calm

Max weight

10.5 kg

Day vs night

Day 30%
Night 90% (best)
Sea trout (sewin) are most reliably encountered from spring through early autumn around river mouths, surf beaches adjacent to estuaries, saltmarsh creeks and rocky points near salmonid rivers. They favour cool, oxygenated water and are famously nocturnal in summer: fish the last light into full dark and again pre‑dawn. A gentle flood tide that creeps over new ground is prime, especially on smaller (neap) tides that keep weed and current manageable. After rain, slight colour pushing out of a river can switch them on. Work very shallow water first—the first gutter and the lip of the surf—before reaching farther. Tackle is light and stealthy: an 8–10 ft spinning rod, 10–15 lb braid with 8–12 lb fluorocarbon leader. Lures should be slim and subtle—10–28 g Tobys/Kosters and other slim metals, size 2–3 inline spinners, small diving or wake plugs. Retrieve steadily with pauses; at night keep it slow and straight. Fly anglers do well with sparse streamers, sandeels and small baitfish patterns by day; at night, dark/waking flies fished just sub‑surface shine. Natural baits like sandeel or peeled prawn (where permitted) presented freelined or under a small float can be deadly in gentle surf and estuary channels—check local byelaws before using bait near river mouths. Keep low, wade quietly, avoid bright lights, and keep moving to cover water. Typical shore depths fished are knee‑deep to a few metres. Handle fish carefully and consider single or de‑barbed hooks; many UK waters encourage or require release of sea trout.

Temperature

6–16°C

Depth range

0.3–5 m

Baits

  • Casting Spoon 9/10
  • Sinking Minnow 8.6/10
  • Soft Plastic (Sandeel) 8.3/10
  • Spinner (Sea Trout) 7.8/10
  • Sandeel 7.2/10

Rigs

  • Bombarda (Casting Float) 9/10

    Casts small flies or tiny sandeel imitations long distance from beaches or estuary mouths. Keeps presentation near-surface where sea trout hunt at dawn/dusk. Great in onshore breeze and clear water.

  • Float (Sliding) 8.4/10

    Drift a live sandeel, prawn or small worm under a sliding float along surf lines, rocky gullies and harbour walls. Adjustable depth keeps baits midwater and mobile—ideal on a flooding tide.

  • Jighead 8/10

    Slim sandeel-style soft plastics on 5–15 g jigheads, worked sub-surface along current seams and surf tables off headlands. Covers water fast and triggers hits from active fish in clear seas.

  • Carolina Rig 7.4/10

    Subtle long-leader soft-plastic setup that creeps over sand in estuaries and surf gutters. Weedless option handles light weed; slow retrieves pick up fish holding in channels on neap tides.

  • Split Shot Rig 7/10

    Ultra-finesse for calm, clear estuaries and rock pools. Tiny soft plastics or worms with a couple of shot for a natural glide. Great when fish are spooky and feeding high at dusk.