Stillwater · Ordovician Volcanics · Wales / Snowdonia (Nant Ffrancon, Ogwen catchment)

Llyn Ogwen

Wide view across Llyn Ogwen towards Snowdonia mountains, with waterfowl standing on a rock in the lake and green hillsides on both shores.
Fair · Trout
Minkie · 6-10
Fairlive now
Good drifting conditions on Llyn Ogwen
Good wave on — drift country. A useful wave. Work the productive shore.
55% confidence

Llyn Ogwen is often best in spring through autumn.

What moved it
  • WindSW 11 km/hLight breeze
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Light breeze
SW 11 km/h
N
SW
from the south-west
Wave20 cm ripple
Water temp9.6°C
Air temp13°C
CloudOvercast
Pressure1018 hPa
Rain · recent0.0 mm

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

Head to
Wind driftN wind
Southern end

A northerly has held for 9 hours at much the same temperature as the 10°C water. No thermal steer either way, but the drift still stacks food against the southern end — the bank it is blowing into — so start there. 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 buzzer is on. Sedge may also come into play as the day warms. The ripple is helpful — fish should move onto the feed and a slow-drifted team or single wet will cover water well.
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.
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.

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

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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 · 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 Ogwen Valley Angling AssociationAccess varies
Largest and most accessible of OVAA's four waters, roadside along the A5 in Nant Ffrancon.
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What's coming
Plan ahead
5-day outlook
Condition match
73%
Cloud50%
Wind100%
Temp60%

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

Other water nearby · 5
Gallery · 2
  1. Wide view across Llyn Ogwen towards Snowdonia mountains, with waterfowl standing on a rock in the lake and green hillsides on both shores.
    Llyn Ogwen
  2. Terrain map of the venue
    Terrain map
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Related guides
Casting instructors near here
Booking & contacts
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