A westerly has held for 10 hours, running colder than the water (10°C air against 12°C water). The end it blows into is taking that chilled surface water, so try the sheltered western end instead — off the back of the wind, where the undertow returns food along the bottom. That chill sits in the top of the water, though, and the bed is slower to feel it — on a bottom bait it is the undertow, not the temperature, that puts you at this end. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Wet-fly teams (12-14) on a slow, natural presentation — check locally for the preferred method. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.
Hatch predictions
Top nymph shown — see all 3 guilds as a supporter.
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Hatch predictions
Top prey shown — see all 5 as a supporter.
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Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Closer to wild-lake trout fishing than to competition réservoirs. More room for naturals, caddis, buzzer, terrestrial and modest lure use.
A good match for Lac Saint-Michel (Brennilis) — most conditions are close to what it fishes best in.
At 450 hectares in the heart of the Monts d'Arrée, Saint-Michel is a Grand Lac Intérieur — a big, open reservoir of stocked rainbow trout fished alongside resident pike and perch. This is loch-style water: you fish the wind, the contours and the inflows rather than a pocket of stream. It carries its own lake regulations, separate from the spate rivers all around it, so read the Finistère rules before you launch.
At 450 hectares in the heart of the Monts d'Arrée, Saint-Michel is a Grand Lac Intérieur — a big, open reservoir of stocked rainbow trout fished alongside resident pike and perch.
A westerly has held for 10 hours, running colder than the water (10°C air against 12°C water). The end it blows into is taking that chilled surface water, so try the sheltered western end instead — off the back of the wind, where the undertow returns food along the bottom. That chill sits in the top of the water, though, and the bed is slower to feel it — on a bottom bait it is the undertow, not the temperature, that puts you at this end. Treat it as a tiebreaker between good swims rather than an override — features and angling pressure usually count for more.
Start with Wet-fly teams (12-14) on a slow, natural presentation — check locally for the preferred method. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.
Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.
Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.
Hatch predictions
Top nymph shown — see all 3 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Top prey shown — see all 5 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Closer to wild-lake trout fishing than to competition réservoirs. More room for naturals, caddis, buzzer, terrestrial and modest lure use.
A good match for Lac Saint-Michel (Brennilis) — most conditions are close to what it fishes best in.
At 450 hectares in the heart of the Monts d'Arrée, Saint-Michel is a Grand Lac Intérieur — a big, open reservoir of stocked rainbow trout fished alongside resident pike and perch. This is loch-style water: you fish the wind, the contours and the inflows rather than a pocket of stream. It carries its own lake regulations, separate from the spate rivers all around it, so read the Finistère rules before you launch.
