Stillwater · Ordovician Volcanics · Wales / Snowdonia (Blaenau Ffestiniog uplands), GB-WLS

Llyn Dubach y Bont

Snow-covered upland lake (Llyn Dubach y Bont) in Snowdonia with open water reflecting a partly cloudy sky.

Small, unassuming, and easy to confuse with its distant cousin — this isn't the Llynoedd Dubach a few miles off, just a modest wild brown trout water doing its quiet job in the Ffestiniog uplands.

Fair · Trout
Minkie · 6-10
Fairlive now
Good drifting conditions on Llyn Dubach y Bont
Useful ripple, fishable wave. Worth a session if the wind holds.
55% confidence

Llyn Dubach y Bont is often best in spring through autumn.

What moved it
  • WindN 17 km/hGentle breeze · Gusts to 44 km/h
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Gentle breeze · Gusts to 44 km/h
N 17 km/h
N
N
from the north
Wave20 cm ripple
Water temp11.5°C
Air temp9°C
CloudOvercast
Pressure1016 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Head to
Wind driftNW wind
North-western end

A northwesterly has held for 9 hours, running colder than the water (9°C air against 12°C water). The end it blows into is taking that chilled surface water, so try the sheltered north-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.

How to fish it · for Trout
When
Late April–June; evening rises through summer
Where
Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

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

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Heather FlyHatch
2
2
Daddy Long LegsHatch
2
3
2
Claret DunHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2

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

Ranked for today
Trout fly box
Bays & launches · 1
Day ticket via Cambrian Angling AssociationAccess varies
Small, easily-reached wild brown trout llyn in the Ffestiniog uplands, distinct from the separate Llynoedd Dubach a few miles west; covered by the Cambrian AA's single day ticket across the whole llyn portfolio.
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What's coming
Plan ahead
5-day outlook
Condition match
71%
Cloud50%
Wind65%
Temp100%

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

Other water nearby · 5
Llyn Morwynion
1.0 km
Brown trout · Rainbow trout
Llynnoedd Gamallt
2.0 km
Brown trout
Llyn Manod
4.0 km
Brown trout
Llyn Dubach
4.0 km
Brown trout
Llyn Cwmprysor
6.0 km
Brown trout
Gallery · 2
  1. Snow-covered upland lake (Llyn Dubach y Bont) in Snowdonia with open water reflecting a partly cloudy sky.
    Ice on Llyn Dubach y Bont
  2. Terrain map of the venue
    Terrain map
About this water

Small, unassuming, and easy to confuse with its distant cousin — this isn't the Llynoedd Dubach a few miles off, just a modest wild brown trout water doing its quiet job in the Ffestiniog uplands. There's nothing here that will make the club newsletter, no record fish or engineering history, just honest water holding honest trout at a scale that suits an evening rather than a full day. Worth adding to a round with Morwynion or Manod rather than fishing on its own — the walk-in is short enough that it earns its place as a second stop, not a headline destination.

  • Lake
  • Ordovician volcanics
Why this score
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Related guides
Scotland Playbookloch & river fishingThermal Layers & Troutreading depth and temperatureEuro Nymphingsubsurface methods
Casting instructors near here
Booking & contacts
Boards & regulators