Stillwater · Ordovician Volcanics · Wales / Snowdonia (Conwy catchment)

Llyn Bychan

Still upland lake surrounded by autumn-coloured trees and heather-covered hills, reeds in the foreground, near Betws-y-Coed in Snowdonia.
Fair · Trout
Marabou Damsel · 8-12
Fairlive now
Good drifting conditions on Llyn Bychan
Good wave on — drift country. A useful wave. Work the productive shore.
58% confidence

Llyn Bychan is often best in spring through autumn.

What moved it
  • WindSW 9 km/hLight breeze
Today's fly
MD
Marabou Damsel8-12
Retrieve, sub-surface
Conditions on the water
Live gauge
Wind
Light breeze
SW 9 km/h
N
SW
from the south-west
WaveRipple
Water temp—
Air temp20°C
CloudBroken
Pressure1021 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
Late April–June; evening rises through summer
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.

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 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Through the year
0–3 scale · August 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
Bays & launches · 1
Day ticket via Betws-y-Coed Anglers ClubAccess varies
One of three small hill lakes above Betws-y-Coed managed by the local angling club; wild brown trout only, walk-in access, no boat.
What's coming
Plan ahead
5-day outlook
Condition match
88%
Cloud100%
Wind100%
Temp60%

Conditions are ideal for Llyn Bychan — wind, cloud and temperature all line up.

Other water nearby · 5
Llyn Goddionduon
1.0 km
Brown trout
Llyn Bodgynydd
1.0 km
Brown trout · Rainbow trout
Llyn Crafnant
2.0 km
Brown trout · Rainbow trout
Tyn Y Fron Fishing
5.0 km
Rainbow trout · Brown trout
Llyn Elsi
5.0 km
Brown trout
Gallery · 2
  1. Still upland lake surrounded by autumn-coloured trees and heather-covered hills, reeds in the foreground, near Betws-y-Coed in Snowdonia.
    Llyn Bychan
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
  • Sedge 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