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Fishing Lake Vyrnwy / Llyn Efyrnwy: what the data says
1,118-acre lake near Powys. The lake tops out around 66 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. Species by species, here's what the data says the year looks like.
Traced from the shoreline, Lake Vyrnwy / Llyn Efyrnwy runs 1,115 acres with 11 miles of edge. With a shoreline index of 2.4, this water is all arms and coves — edge habitat well beyond its acreage. 14% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water.
Brown Trout fishing at Lake Vyrnwy / Llyn Efyrnwy
Spring brown trout on Lake Vyrnwy / Llyn Efyrnwy hold shallow, usually 3 to 25 ft. They move out to 25 to 60 ft in summer and finish the year down in 5 to 35 ft. Put Break off the point first on the milk run — a drop-off near 30 ft that grades prime for summer. The feeding windows run after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (17 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Break off the point (30 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (17 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (30 ft) | Jigging spoon, Small stickbait (slow) |
European Perch fishing at Lake Vyrnwy / Llyn Efyrnwy
In spring, european perch run shallow here, mostly 3 to 12 ft. Midsummer fish sit out in 8 to 28 ft before dropping to 12 to 33 ft for winter. Spring european perch concentrate at Shallow bay flat, a prime-rated weed flat around 6 ft. Fish it in early morning and you'll meet the bite. You won't need more than a drop-shot micro plastics or a small crankbait (perch pattern) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (6 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Break off the point (30 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Break off the point (30 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Break off the point (30 ft) | Tungsten jig + maggots, Small balance jig |
Northern Pike fishing at Lake Vyrnwy / Llyn Efyrnwy
In spring, northern pike run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring northern pike. Time it for early morning and the evening. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Arctic Char fishing at Lake Vyrnwy / Llyn Efyrnwy
Come spring, look for arctic char tight to the bank in 4 to 15 ft. Expect a summer slide to 20 to 60 ft, then a winter hold in 10 to 40 ft. Start at Deep basin. It's a deep basin holding about 56 ft of water and rates prime come summer. Prime time lands in early morning. A jigging spoon vertical or a tube jig (smelt) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | midday & dawn | open water | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 20 to 60 ft | dawn | Deep basin (56 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Break off the point (30 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 10 to 40 ft | midday & dawn | Break off the point (30 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
Notable structure
- Deep basin: deep basin, around 56 ft
- Break off the point: drop-off, around 30 ft
- Main-lake point: point, around 17 ft
- Secondary point: point, around 17 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Common questions
How deep is Lake Vyrnwy / Llyn Efyrnwy?
Lake Vyrnwy / Llyn Efyrnwy is about 66 ft (20 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Lake Vyrnwy / Llyn Efyrnwy?
Anglers target northern pike, european perch, brown trout, arctic char on Lake Vyrnwy / Llyn Efyrnwy. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Where is the best fishing spot on Lake Vyrnwy / Llyn Efyrnwy?
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for european perch in spring. Every other rated spot, per species and season, is on the map above.
When is the best time to fish Lake Vyrnwy / Llyn Efyrnwy?
For brown trout, the summer bite is best in after dark and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Llyn Tegid or Bala Lake 9 mi · Llyn Celyn 14 mi · Llyn Arenig Fach 16 mi · Llyn y Garn 17 mi · Llyn Cau 18 mi · Llyn Gwernan 18 mi · Llyn y Gadair 18 mi · Tal-y-llyn Lake 18 mi · Llyn Cwm-mynach 19 mi · Glaslyn 20 mi · Llyn Conwy 20 mi · Llyn y Bi 20 mi
See how Lake Vyrnwy / Llyn Efyrnwy stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom · best arctic char lakes in United Kingdom
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