Stillwater · Silurian Mudstone Shale · Wales / Cambrian Mountains (Ystwyth catchment), GB-WLS

Llyn Frongoch

Llyn Fron Goch

Frongoch is the Aberystwyth AA's headline water — eight hectares roadside above Pont-rhyd-y-groes, fly-only, four boats, and a stocking policy that puts decent rainbows over a steady head of wild browns.

Fair · Trout
Minkie · 6-10
Fairlive now
Good drifting conditions on Llyn Frongoch
Good wave on — drift country. A useful wave. Work the productive shore.
58% confidence

Llyn Frongoch is often best in spring through autumn.

What moved it
  • WindN 11 km/hLight breeze
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Light breeze
N 11 km/h
N
N
from the north
Wave20 cm ripple
Water temp11.2°C
Air temp7°C
CloudClear
Pressure1030 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 11 hours, running colder than the water (10°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
The sedge is on. Lake Olive 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

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
Aberystwyth AA's headline water — roadside, fly-only, four boats, stocked rainbows over wild browns.
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What's coming
Plan ahead
5-day outlook
Condition match
78%
Cloud25%
Wind100%
Temp100%

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

Other water nearby · 5
Gallery · 2
  1. Llyn Fron Goch
  2. Terrain map of the venue
    Terrain map
About this water

Frongoch is the Aberystwyth AA's headline water — eight hectares roadside above Pont-rhyd-y-groes, fly-only, four boats, and a stocking policy that puts decent rainbows over a steady head of wild browns. Caravan-holders get priority Monday, Tuesday, Thursday and Friday, which is worth knowing if you're planning ahead. The fishing is honest and the access is straightforward — it does what a small Welsh stillwater should do.

  • Lake
  • Silurian mudstone shale
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Sedge is in its seasonal window, boosting the chance of targeted feeding.
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