Stillwater · Slate · North Wales / Conwy

Llyn Crafnant

Llyn Crafnant lake surrounded by forested hills near Trefriw, Conwy

Llyn Crafnant sits in the Conwy Valley beneath the Carneddau — a real mountain water accessible from a quiet village, historically fished from the bank in a moorland setting with wild browns and stocked rainbows over spring olives and buzzers.

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

Boat-friendly, competition-influenced, often wind-driven, with strong top-of-water periods but also classic deep searching and washing-line phases.

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
About this water

Llyn Crafnant sits in the Conwy Valley beneath the Carneddau — a real mountain water accessible from a quiet village, historically fished from the bank in a moorland setting with wild browns and stocked rainbows over spring olives and buzzers. Important honesty note: the fishery and its lakeside café closed as of June 2026 — fishingwales.net posted an explicit closure notice, but the operator's own legacy website still shows old opening times and season dates with no mention of the closure, so don't trust that page. Older pricing and access details circulating elsewhere predate the closure. Confirm current status directly before planning a visit.

  • Loch
  • Slate
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
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