Stoneflies
Gammarids
- Ecology: Moderate
- Chemical: Unknown
NRW (Wales) · UKGB110063041570
Rules at a glance
- Fly only
Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Mostly summer into autumn. The Rheidol is not a spring salmon river. Fish on the drop after rain or a hydropower release — 12 to 24 hours into a falling river.
Where
Lower beats above the tidal limit at Aberystwyth. Named pools through the Aberystwyth association water.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring or coloured water. Fish the named lies in each pool, working systematically before moving on. Mandatory catch-and-release under NRW byelaw — every salmon goes back.
Kit
10 ft #7/8 single-hander or 11 ft switch — small spate scale; double-handers are wasted on these rivers. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Hatch timeline · tomorrowPeak at 18h
12h(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 43%
Also:Autumn Olive26%
Peak emergence windowWeather boost6 food groups active
Peak activity at 18h — Caperer (Caperer, Weather boost)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
1
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
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
Beats · 1
Aberystwyth AA — day ticket via Fishing PassportAccess varies
Sixteen miles of both banks of the Rheidol from Devil's Bridge down to the sea — held by Aberystwyth Angling Association.
Visit official site ↗What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Aberystwyth harbour weir and bridge over Afon Rheidol river Terrain map
Water quality (WFD)
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow8525% weight
- Clarity9520% weight
- Feeding Time8015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 17 October
- Sea trout 3 March → 17 October
- Trout 3 March → 30 September
Sea trout: Variable seasonal (2026) — Sewin run is one of the most consistent on the Welsh coast — Aberystwyth association reports both numbers and size — but the all-Wales At Risk classification applies and stocks have declined from historical peaks. Hydropower releases modify the spate response, so the gauge needs reading alongside the release schedule, not just the rainfall.
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
Rheidol
Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Mostly summer into autumn. The Rheidol is not a spring salmon river. Fish on the drop after rain or a hydropower release — 12 to 24 hours into a falling river.
Where
Lower beats above the tidal limit at Aberystwyth. Named pools through the Aberystwyth association water.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring or coloured water. Fish the named lies in each pool, working systematically before moving on. Mandatory catch-and-release under NRW byelaw — every salmon goes back.
Kit
10 ft #7/8 single-hander or 11 ft switch — small spate scale; double-handers are wasted on these rivers. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Hatch timeline · tomorrowPeak at 18h
12h(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 43%
Also:Autumn Olive26%
Peak emergence windowWeather boost6 food groups active
Peak activity at 18h — Caperer (Caperer, Weather boost)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
1
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
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Atlantic Salmon
Beats · 1
Aberystwyth AA — day ticket via Fishing PassportAccess varies
Sixteen miles of both banks of the Rheidol from Devil's Bridge down to the sea — held by Aberystwyth Angling Association.
Visit official site ↗What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Aberystwyth harbour weir and bridge over Afon Rheidol river Terrain map
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
NRW (Wales) · UKGB110063041570
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow8525% weight
- Clarity9520% weight
- Feeding Time8015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 17 October
- Sea trout 3 March → 17 October
- Trout 3 March → 30 September
Sea trout: Variable seasonal (2026) — Sewin run is one of the most consistent on the Welsh coast — Aberystwyth association reports both numbers and size — but the all-Wales At Risk classification applies and stocks have declined from historical peaks. Hydropower releases modify the spate response, so the gauge needs reading alongside the release schedule, not just the rainfall.
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators