- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110064048220
Rules at a glance
- Free fishing
- Fly only
Water temperature for Atlantic Salmon
Warm — slow21°C est.ideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Occasional fish through summer and autumn. The Artro is not a salmon destination.
Where
Lower Artro pools above the tidal limit at Llanbedr.
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
Water at 21.1°C. This is the line where catch-and-release kills atlantic salmon. Do not fish for them today.
Hatch timeline · todayPeak at 6pm
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 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
1
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
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
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Probably above the Atlantic Salmon safety line — these are likely cooler, but carry a thermometer.
Gallery · 2
The Afon Artro near Crafnant, Gwynedd Terrain map
Water quality (WFD)
Why this score · for Atlantic Salmon
- Temperature130% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% 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) — Small Ardudwy spate with very low recorded catches. All-Wales At Risk picture applies. Honest local sport on the right water rather than a destination fishery.
Related guides
Casting instructors near here
Booking & contacts
Artro
Water temperature for Atlantic Salmon
Warm — slow21°C est.ideal 10–14°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Occasional fish through summer and autumn. The Artro is not a salmon destination.
Where
Lower Artro pools above the tidal limit at Llanbedr.
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
Water at 21.1°C. This is the line where catch-and-release kills atlantic salmon. Do not fish for them today.
Hatch timeline · todayPeak at 6pm
Hatch predictions
Today's headline hatch shown — see all 7 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 2 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
1
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
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
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Probably above the Atlantic Salmon safety line — these are likely cooler, but carry a thermometer.
Gallery · 2
The Afon Artro near Crafnant, Gwynedd Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110064048220
Why this score · for Atlantic Salmon
- Temperature130% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% 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) — Small Ardudwy spate with very low recorded catches. All-Wales At Risk picture applies. Honest local sport on the right water rather than a destination fishery.
Related guides
Casting instructors near here
Booking & contacts