Stillwater · Cambrian Slate Ordovician Volcanics · Wales / Snowdonia (Llanberis Pass)

Llyn Padarn

Llyn Padarn lake at Llanberis on a calm morning, with Snowdonia's mountains beyond the water.

Padarn is one of the largest natural lakes in Wales — ninety-seven hectares of moraine-dammed glacial water below the Llanberis Pass, twenty-nine metres at its deepest.

Fair · Trout
Diawl Bach · 12-14
Fairlive now
Silverhorn evening rise expected on Llyn Padarn
Good wave on — drift country. A useful wave. Work the productive shore.
55% confidence
What moved it
  • WindN 9 km/hLight breeze
Today's fly
Diawl Bach
Diawl Bach12-14
Washing-line, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
N 9 km/h
N
N
from the north
WaveRipple
Water temp
Air temp14°C
CloudClear
Pressure1023 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
The murrough is on. Damsel Nymph may also come into play as the day warms. The ripple is helpful — fish should move onto the feed and a slow-drifted team or single wet will cover water well. Dusk on the lake is prime time for surface feeding — stay out as long as light allows.
Where
Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Lake OliveHatch
1
2
2
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box
Gammarus Scud (Olive)
Gammarus Scud (Olive)
10-14 · Gammarus Scud
Washing-line, sub-surface
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
97-hectare moraine-dammed glacial lake below Llanberis Pass — wild brown trout shoreward, Arctic char (torgoch) in the deep water.
What's coming
Plan ahead
5-day outlook
Condition match
78%
Cloud25%
Wind100%
Temp100%

A good match for Llyn Padarn — most conditions are close to what it fishes best in.

Other water nearby · 5
Gallery · 2
  1. Llyn Padarn lake at Llanberis on a calm morning, with Snowdonia's mountains beyond the water.
    Llyn Padarn at Llanberis, Gwynedd, with the Snowdonia mountains in the background.
  2. Terrain map of the venue
    Terrain map
About this water

Padarn is one of the largest natural lakes in Wales — ninety-seven hectares of moraine-dammed glacial water below the Llanberis Pass, twenty-nine metres at its deepest. Wild brown trout in the margins; torgoch — Arctic char — in the deep water, where they've held since the last glaciation. A boat helps. The view down the lake with Snowdon behind is the kind that justifies a long drive even on a day the fishing doesn't quite happen.

  • Lake
  • Cambrian slate ordovician volcanics
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Temperature (cool) is in the sweet spot for summer fishing.
  • Murrough is in its seasonal window, boosting the chance of targeted feeding.
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