Stillwater · Slate · North Wales / Conwy

Llyn Crafnant

Llyn Crafnant lake surrounded by forested hills near Trefriw, Conwy
Marginal · Trout
Olive Damsel · 10-12
A patient day, if you fancy it
Good wave on — drift country. Slow going — pick your moments and do not force it.
37% confidence
limited data

Llyn Crafnant is often best in spring through autumn.

What moved it
  • WindSW 13 km/hGentle breeze
Today's fly
OD
Olive Damsel10-12
Retrieve, sub-surface
Conditions on the water
Live gauge
Wind
Gentle breeze
SW 13 km/h
N
SW
from the south-west
Wave20 cm ripple
Water temp—
Air temp21°C
CloudOvercast
Pressure1021 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
The sedge is on. Daddy longlegs may also come into play as the day warms. Drift conditions look good — cover the wind lanes. The breeze will be blowing terrestrial insects onto the water — check the wind lanes and downwind margins for rising fish.
Where
Set up a broadside drift and cover the water systematically. Work Bibio Hopper on the bob, CDC Dry on the middle dropper, and Diawl Bach on the point.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work Bibio Hopper on the bob, CDC Dry on the middle dropper, and Diawl Bach 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

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
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

No confirmed current fishery operator as of June 2026. Confirm status directly before planning a trip — the operator's own website is stale and does not reflect the closure.

Fishery status — currently closedMembers-only
fishingwales.
What's coming
Plan ahead
5-day outlook
Condition match
59%
Cloud50%
Wind65%
Temp60%

A reasonable day here, though cloud isn't quite in the sweet spot.

Other water nearby · 5
Llyn Bychan
2.0 km
Brown trout
Llyn Goddionduon
2.0 km
Brown trout
Llyn Bodgynydd
2.0 km
Brown trout · Rainbow trout
Llyn Eigiau
5.0 km
Brown trout · Arctic char
Llyn Coedty (Coedty Reservoir)
6.0 km
Brown trout
Gallery · 2
  1. Llyn Crafnant lake surrounded by forested hills near Trefriw, Conwy
    Llyn Crafnant, a lake in the Gwydir Forest, Snowdonia
  2. Terrain map of the venue
    Terrain map
Why this score
  • Sedge is in its seasonal window, boosting the chance of targeted feeding.
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Scotland Playbookloch & river fishingSmall Stillwater Playbookstillwater tacticsThermal Layers & Troutreading depth and temperature
Casting instructors near here
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