Spate · Mixed · South Wales / Cardiff

River Ely

No photos yet for this water.

Small Vale-of-Glamorgan river through Llantrisant and the western Cardiff suburbs to the Bay.

Species

About as good as it gets

Low and clear — careful approach country. Take your time — read the water before you cast.

75% confidence in this read
Water temperature for brown trout
Ideal
11°C est.ideal 1016°C
0°14°28°
Why this score · for brown trout
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time4013% weight
  • Pressure807% weight
  • Prey Activity5112% weight
Conditions
Level
0.27 m
Water temp
10.7°C
Estimated
Clarity
Clear
Air temp
18°C
Wind
NE 10 km/h
Light breeze
Pressure
1030 hPa
Rain · 24h
0.0 mm
No rain
Rain · ahead
0.0 mm
No meaningful rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

How to fish it · for brown trout
When
Through the open trout season. Spring olives and summer sedges through the middle reaches; modest fly life compared to the upper Taff.
Where
Upper and middle Ely above the Cardiff suburbs.
Method
Upstream dry to risers through summer; dry-dropper through the runs. Where the river slows through farmland, longer leaders and lighter tippet earn the takes. Spider patterns on the swing when olives are off the water.
Kit
9 ft #4. Floating line, 12 ft leader to 4 to 5 lb fluoro. Wading is usually easy on the lower reaches — the upper valley is rockier.
Why this works
Excellent conditions. Temperature is favourable (100), Feeding time is weakest (40).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2

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

Directions
About this water

Small Vale-of-Glamorgan river through Llantrisant and the western Cardiff suburbs to the Bay. Brown trout in the upper and middle reaches; sewin work up on the autumn lifts but in genuinely modest numbers. The Ely is the smallest of the three Cardiff-area rivers and the least known to fly anglers — an honest urban-recovery fishery rather than a destination.

  • Mixed
Seasons & zones
  • Sea trout3 March → 17 October
  • Trout3 March → 30 September

Sea trout: Variable seasonal (2026) — Small urban river; sewin work up on autumn lifts in very modest numbers. The Ely is the smallest of the three Cardiff-area rivers and the least established as a migratory fishery. All-Wales At Risk picture applies.

Other water nearby · 5