Stillwater · Ordovician Volcanics · Wales / Snowdonia (Blaenau Ffestiniog uplands), GB-WLS

Llyn Conglog

Still upland lake (Llyn Conglog) reflecting a cloudy sky, with grassy moorland banks and a mountain in the distance, Snowdonia.
Fair · Trout
Minkie · 6-10
A respectable few hours, if you choose your moments
Good wave on — drift country. A useful wave. Work the productive shore.
45% confidence
limited data

Llyn Conglog is often best in spring through autumn.

What moved it
  • WindN 7 km/hLight breeze
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Light breeze
N 7 km/h
N
N
from the north
WaveRipple
Water temp
Air temp8°C
CloudOvercast
Pressure1023 hPa
Rain · recent0.0 mm

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

How to fish it · for Trout
When
June–August; best on overcast, breezy days
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. Keep a sedge-style dry or emerger on a short leader for the evening rise.
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. Keep a sedge-style dry or emerger on a short leader for the evening rise.

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

Sedge should come on through the afternoon as the water warms.

Bank

Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.

Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read 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
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
Trout fly box
Bays & launches · 1
Day ticket via Cambrian Angling AssociationAccess varies
Remote wild brown trout llyn high above Blaenau Ffestiniog, reached on foot; covered by the Cambrian AA's single day ticket across the whole llyn portfolio.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
73%
Cloud50%
Wind100%
Temp60%

A good match for Llyn Conglog — most conditions are close to what it fishes best in.

Other water nearby · 5
Gallery · 2
  1. Still upland lake (Llyn Conglog) reflecting a cloudy sky, with grassy moorland banks and a mountain in the distance, Snowdonia.
    Llyn Conglog
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Lake Olive is in its seasonal window, boosting the chance of targeted feeding.
Related guides
Casting instructors near here
Booking & contacts