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

Cwm Rheidol Reservoir

Cwm Rheidol Reservoir — Vale of Rheidol 260714_34
Fair · Trout
Minkie · 6-10
Fairlive now
Reasonable autumn fishing likely at Cwm Rheidol Reservoir
Good wave on — drift country. A useful wave. Work the productive shore.
63% confidence

Cwm Rheidol Reservoir is often best in spring through autumn.

What moved it
  • WindNE 16 km/hGentle breeze · Gusts to 24 km/h
Today's fly
Minkie
Minkie6-10
Retrieve, sub-surface
Conditions on the water
Estimate
Wind
Gentle breeze · Gusts to 24 km/h
NE 16 km/h
N
NE
from the north-east
Wave20 cm ripple
Water temp11.3°C
Air temp9°C
CloudClear
Pressure1035 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

How to fish it · for Trout
When
Late April–June; evening rises through summer
Where
Start with Minkie (6-10) — on the point. As evening approaches, switch to dries or emergers if you see surface activity.
The plan
Plan A

Start with Minkie (6-10) — on the point. As evening approaches, switch to dries or emergers if you see surface activity.

Plan B

If the main plan stalls, drop to a size 14–16 midge — switch to a washing-line or suspender rig and change drift line before you change food group.

Watch for

Sedge should come on through the afternoon as the water warms.

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 4 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

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
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
Fly box · Trout
Bays & launches · 1
Day ticket via Fishing PassportAccess varies
Aberystwyth AA's largest water — a 25-hectare hydro reservoir on the Rheidol holding wild brown trout, with occasional sewin and salmon working up from the estuary.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Condition match
64%
Cloud25%
Wind65%
Temp100%

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

Other water nearby · 5
Gallery · 2
  1. Cwm Rheidol Reservoir — Vale of Rheidol 260714_34
    Vale of Rheidol 260714_34
  2. Terrain map of the venue
    Terrain map
Why this score
  • Temperature (cool) is in the sweet spot for autumn fishing.
  • Buzzer is in its seasonal window, boosting the chance of targeted feeding.
Directions
Seasons & zones

Sea trout: Variable seasonal (2026)

Related guides
Casting instructors near here
Booking & contacts
Boards & regulators