- Ecology: Good
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — Good ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_32M080920
Rules at a glance
- Free fishing
- Fly only
Water temperature for Atlantic Salmon
Warm — slow19.7°Cideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring run from late March; grilse from June; main run summer through September. Spate-driven — fish 12 to 24 hours after rain on the drop. Fish the named pools methodically.
Where
Erriff Fishery beats from below Aasleagh Falls down to the Killary fjord. Heads, tails, and named lies on the assigned beat.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Catch-and-release encouraged across most Irish salmon water.
Kit
10 ft #7 single-hander on the smaller spate rivers; 11 ft switch where the river opens out. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Conditions are tough, but salmon can always surprise you. Peak summer — grilse and summer salmon are active and willing. Small flies, lightly dressed, fished with purpose. August is a decent month for salmon here, though not the peak.
Hatch timeline · todayPeak at 6am
Hatch predictions
See the full hour-by-hour hatch timeline with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
See what else is on the menu with Pro.
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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Atlantic Salmon fly box
Permits & access
Permit required — see local rules.
- The Erriff fishery (Aasleagh Lodge) — advance booking essential
- All fish released alive
- State rod licence required.
What's coming
Plan ahead
5-day outlook
Water here at 19.7°C. Nothing cooler within range.
Gallery · 2
Aasleagh Falls on the Erriff River, Connemara Terrain map
Water quality (WFD)
The full read · show the working · for Atlantic Salmon · confidence 85%
How the river scores — hydrology factors
Water heightHigh But Manageable+0.8
Recent riseClear Recent Rise+8.8
Falling after liftStill Rising Hard-0.6
Water temperatureHot-12.5
Time in seasonSummer Peak Window+1.9
ClarityClearing+2.4
Hydrology base0.8
Will they take?Neutralcaps the band
Taking mood is fair — clearing, stained water, water too warm, fresh fish moving on the lift.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 SeptemberC&R
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts
Erriff
Water temperature for Atlantic Salmon
Warm — slow19.7°Cideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Spring run from late March; grilse from June; main run summer through September. Spate-driven — fish 12 to 24 hours after rain on the drop. Fish the named pools methodically.
Where
Erriff Fishery beats from below Aasleagh Falls down to the Killary fjord. Heads, tails, and named lies on the assigned beat.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Catch-and-release encouraged across most Irish salmon water.
Kit
10 ft #7 single-hander on the smaller spate rivers; 11 ft switch where the river opens out. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Conditions are tough, but salmon can always surprise you. Peak summer — grilse and summer salmon are active and willing. Small flies, lightly dressed, fished with purpose. August is a decent month for salmon here, though not the peak.
Hatch timeline · todayPeak at 6am
Hatch predictions
See the full hour-by-hour hatch timeline with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
See what else is on the menu with Pro.
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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Atlantic Salmon fly box
Permits & access
Permit required — see local rules.
- The Erriff fishery (Aasleagh Lodge) — advance booking essential
- All fish released alive
- State rod licence required.
What's coming
Plan ahead
5-day outlook
Water here at 19.7°C. Nothing cooler within range.
Gallery · 2
Aasleagh Falls on the Erriff River, Connemara Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
What this classification means
EPA WFD 2019-2024 — Good ecological status; filled 2026-06-18. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).
EPA (Ireland) · IEWE_32M080920
The full read · show the working · for Atlantic Salmon · confidence 85%
How the river scores — hydrology factors
Water heightHigh But Manageable+0.8
Recent riseClear Recent Rise+8.8
Falling after liftStill Rising Hard-0.6
Water temperatureHot-12.5
Time in seasonSummer Peak Window+1.9
ClarityClearing+2.4
Hydrology base0.8
Will they take?Neutralcaps the band
Taking mood is fair — clearing, stained water, water too warm, fresh fish moving on the lift.
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
- Salmon 1 February → 30 SeptemberC&R
Sea trout: Variable seasonal (2026)
Related guides
Casting instructors near here
Booking & contacts