Stillwater · Slate · North Wales / Conwy, GB-WLS

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.

Fair · Trout
Booby · 10-12
Fairlive now
Good drifting conditions on Llyn Crafnant
Useful ripple, fishable wave. Worth a session if the wind holds.
58% confidence

Llyn Crafnant is often best in spring through autumn.

What moved it
  • WindS 31 km/hFresh breeze
Today's fly
Booby
Booby10-12
Washing-line, sub-surface
Conditions on the water
Estimate
Wind
Fresh breeze
S 31 km/h
N
S
from the south
Wave60 cm wave
Water temp15.5°C
Air temp15°C
CloudOvercast
Pressure1002 hPa
Rain · recent0.0 mm

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

Head to
Wind driftS wind
Northern end

A southerly has held for 10 hours, running warmer than the water (19°C air against 16°C water). Expect fish at the northern end — the bank it is blowing into — where the drift piles food, colour and warmth together. This reads the upper water, though — a bottom bait at range feels it far less than a floater or a fish in the margins. 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
The daddy longlegs are on. Buzzer may also come into play as the day warms. The breeze will be blowing terrestrial insects onto the water — check the wind lanes and downwind margins for rising fish.
Where
Work Dabbler and bumble on the bob, olive on the middle dropper, and Buzzer and midge family on the point.
The plan
Plan A

Work Dabbler and bumble on the bob, olive on the middle dropper, and Buzzer and midge family 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
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.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
45%
Cloud50%
Wind30%
Temp60%

Conditions are away from Llyn Crafnant's sweet spot — it usually fishes best in ripple wind with cloud skies.

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
  • Wind conditions (windy) are not ideal for this water.
  • Daddy Longlegs are in their seasonal window, boosting the chance of targeted feeding.
Related guides
Scotland Playbookloch & river fishingSmall Stillwater Playbookstillwater tacticsThermal Layers & Troutreading depth and temperature
Casting instructors near here
Booking & contacts
Boards & regulators