Glacial llyn beneath the Black Mountain escarpment in the western Brecon Beacons. Wild brown trout. Spectacular setting below the Lady of the Lake cliff. Access from Llanddeusant — 3-mile walk. Small, wild fish on traditional methods.
Rules at a glance
- Free fishing
- Fly only
A patient day, if you fancy it
Good wave on — drift country. Take your time — read the water before you cast.
38% confidence — limited data
Live now
Conditions on the water
Trends shown where the gauge supports them
Wind
W 13 km/h
Gentle breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
4°C
Cloud
Broken
Pressure
—
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
How to fish · for brown trout
The brief
When · where · method · kit
How to fish it · for brown trout
When
June to August
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.
Method
Method not yet authored.
Kit
Kit not yet authored.
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
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.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
4 patterns from this venue's curated pack
Evidence
Why today scores what it does
The factors driving today's verdict
Why this score
- late spring conditions with cloud skies and breezy wind.
Detail · next 12h
Precipitation
The reading most likely to move tomorrow's verdict
About this water · Lough note · 4 min read
Llyn y Fan Fach · profile
Who this water suits
Strengths · watch-outs · best for
About this water
Llyn y Fan Fach, on the water
Field guide · contributor-editedLlyn y Fan Fach · about
What this water is
Background · character · contributors
About this water
Glacial llyn beneath the Black Mountain escarpment in the western Brecon Beacons. Wild brown trout. Spectacular setting below the Lady of the Lake cliff. Access from Llanddeusant — 3-mile walk. Small, wild fish on traditional methods.
- Lake
- Sandstone
Llyn y Fan Fach · directions
How to get to the water
Directions
Llyn y Fan Fach · zones
Where the rules change
Seasons · zones · per-species rules
Seasons & zones
- Trout3 March → 30 September
Llyn y Fan Fach
Google Places
Glacial llyn beneath the Black Mountain escarpment in the western Brecon Beacons.
Species
A patient day, if you fancy it
Good wave on — drift country. Take your time — read the water before you cast.
38% confidence — limited data
Conditions
Wind
W 13 km/h
Gentle breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
4°C
Cloud
Broken
Pressure
—
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
Condition match
54%
Cloud70%
Wind65%
Temp25%
A reasonable day here, though temperature isn't quite in the sweet spot.
How to fish it · for brown trout
When
June to August
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.
Method
Method not yet authored.
Kit
Kit not yet authored.
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.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Why this score
- late spring conditions with cloud skies and breezy wind.
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
March BrownHatch
1
2
1
Iron BlueHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Gallery · 1
Terrain map
Directions
About this water
Glacial llyn beneath the Black Mountain escarpment in the western Brecon Beacons. Wild brown trout. Spectacular setting below the Lady of the Lake cliff. Access from Llanddeusant — 3-mile walk. Small, wild fish on traditional methods.
- Lake
- Sandstone
Seasons & zones
- Trout3 March → 30 September
About this water · Lough note · 4 min read
Glacial llyn beneath the Black Mountain escarpment in the western Brecon Beacons. Wild brown trout. Spectacular setting below the Lady of the Lake cliff. Access from Llanddeusant — 3-mile walk. Small, wild fish on traditional methods.
Other water nearby · 5
Booking & contacts