Stillwater · Silurian Mudstone Shale · Wales / Cambrian Mountains (Rheidol uplands), GB-WLS

Llyn-yr-Oerfa

Llyn-yr-Oerfa, a remote upland lake on the Pumlumon moorland plateau in mid Wales.

The Cold Place, which tells you most of what you need to know.

Fair · Trout
Minkie · 6-10
Fairlive now
Good drifting conditions on Llyn-yr-Oerfa
Useful ripple, fishable wave. Worth a session if the wind holds.
57% confidence

Llyn-yr-Oerfa is often best in spring through autumn.

What moved it
  • WindNW 24 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 24 km/h
N
NW
from the north-west
Wave40 cm chop
Water temp11.3°C
Air temp10°C
CloudBroken
Pressure1026 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 10 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
Work a bushy searching pattern on the bob and drop a contrasting nymph on the point.
The plan
Plan A

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

Top nymph shown — see all 3 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 · 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
Trout fly box
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
'Cold place' — trickle-stocked brown trout fishery with specimens to 5 lb+.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
63%
Cloud70%
Wind30%
Temp100%

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

Other water nearby · 5
Gallery · 2
  1. Llyn-yr-Oerfa, a remote upland lake on the Pumlumon moorland plateau in mid Wales.
    Llyn-yr-Oerfa, an upland lake on the Pumlumon plateau near Ystumtuen, mid Wales.
  2. Terrain map of the venue
    Terrain map
About this water

The Cold Place, which tells you most of what you need to know. Four hectares of upland water with easy parking and firm footing on one bank — and trickle-stocked brown trout that occasionally push past five pounds. The setting earns the name; the fishing earns the trip.

  • Lake
  • Silurian mudstone shale
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.
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