Stillwater · Sandstone · Mid Wales

Brynhenllys Fishery

Brynhenllys Fishery terrain map

Brynhenllys is a Mid Wales stocked fishery sitting on sandstone, the kind of honest little water that asks nothing of you but a few hours and a bit of patience.

Fair · Trout
Coch-y-Bonddu Beetle · 10-14
Fairlive now
Reasonable summer fishing likely at Brynhenllys Fishery
Water temperature is the limiting factor today, not the wave. Fish dawn or dusk if you go at all, and handle everything with extra care.
52% confidence

Brynhenllys Fishery is often best in spring through autumn.

What moved it
  • WindSW 12 km/hGentle breeze
Today's fly
CY
Coch-y-Bonddu Beetle10-14
Upstream dry, on top
Conditions on the water
Live gauge
Wind
Gentle breeze
SW 12 km/h
N
SW
from the south-west
Wave20 cm ripple
Water temp—
Air temp31°C
CloudOvercast
Pressure1020 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Trout
When
Cloudy or lightly breezy days, cool to moderate water; spring and autumn the steadiest, with buzzer activity through the warmer months.
Where
Start with Coch-y-Bonddu Beetle (10-14) — on the bob / top dropper. As evening approaches, switch to dries or emergers if you see surface activity.
The plan
Plan A

Start with Coch-y-Bonddu Beetle (10-14) — on the bob / top dropper. As evening approaches, switch to dries or emergers if you see surface activity.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Bank

Bank fishing near inflows, dam walls, and weed beds. Move to find feeding fish.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Trout fly box

Traditional wild-trout llyn fishing. Wet flies and dabblers stay central, with buzzer, caddis, terrestrials and occasional small fry patterns becoming important as the season warms.

What's coming
Plan ahead
5-day outlook
Condition match
49%
Cloud50%
Wind65%
Temp25%

Conditions are away from Brynhenllys Fishery's sweet spot — it usually fishes best in ripple wind with cloud skies.

Other water nearby · 5
Llynfi
5.0 km
12
Brown trout · Grayling · Chub
Grwyne Fawr Reservoir
11 km
Brown trout
Arrow
20 km
Brown trout · Grayling
Talybont Reservoir
23 km
Brown trout
Llyn Cwm Llwch
26 km
Brown trout
About this water

Brynhenllys is a Mid Wales stocked fishery sitting on sandstone, the kind of honest little water that asks nothing of you but a few hours and a bit of patience. There's no mystique here and that's rather the point. The trout are stocked and willing, but willing isn't the same as foolish, and on a bright still day they'll sulk in the depths and make you work for it. Come on a grey afternoon with a breeze putting a ripple on the surface and the whole place opens up. It fishes best cool, which suits the Welsh weather, since cool is mostly what's on offer. A reliable place to relearn that catching fish is only part of why you came.

  • Fishery
  • Sandstone
Why this score
  • High temperatures may push fish deeper and reduce surface activity.
Related guides
Small Stillwater Playbookstillwater tacticsThermal Layers & Troutreading depth and temperatureEuro Nymphingsubsurface methods
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