Stillwater · Ordovician Volcanics Sediment · Wales / Snowdonia (Carneddau), GB-WLS

Llyn Coedty (Coedty Reservoir)

Llyn Coedty reservoir seen from the track running towards Moel Eilio, near Dolgarrog
Fair · Trout
Minkie · 6-10
Fairlive now
Reasonable autumn fishing likely at Llyn Coedty (Coedty Reservoir)
Useful ripple, fishable wave. Worth a session if the wind holds.
63% confidence

Llyn Coedty (Coedty Reservoir) is often best in spring through autumn.

What moved it
  • WindNW 28 km/hModerate breeze · Gusts to 35 km/h
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Moderate breeze · Gusts to 35 km/h
NW 28 km/h
N
NW
from the north-west
Wave60 cm wave
Water temp11.3°C
Air temp9°C
CloudOvercast
Pressure1025 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 6 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
Start with Minkie (6-10) — on the point. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.
The plan
Plan A

Start with Minkie (6-10) — on the point. Early in the day, nymphs and buzzers fished slowly tend to outperform attractors.

Plan B

A fry-imitating pattern stripped through the margins can save a blank in autumn.

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 3 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

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
Fly box · Trout
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
12-acre balance-tip hydro reservoir below Llyn Eigiau — wild brown trout.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
57%
Cloud50%
Wind30%
Temp100%

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

Other water nearby · 5
Gallery · 2
  1. Llyn Coedty reservoir seen from the track running towards Moel Eilio, near Dolgarrog
    Llyn Coedty (Coedty Reservoir), near Dolgarrog, Conwy
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (windy) are not ideal for this water.
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Lake Olive is in its seasonal window, boosting the chance of targeted feeding.
  • Reservoirs of this kind fish well at this time of year.
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators