Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Ideal15°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Good — water temperature is working for you, but river flow is the limiting factor today.
Likely species
Gammarids
Hatch timeline · todayPeak at 11:00
Hatch predictions
Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
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
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Purón · 1.2 kmTrout permit
Trout permit stretch — Puente de ferrocarril to 25 m aguas abajo de la última caseta de pescadores, en línea de playa.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de ferrocarril
Downstream: 25 m aguas abajo de la última caseta de pescadores, en línea de playa
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- Se aplica la normativa de trucha de mar — comprueba las normas vigentes.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
As it comes to the sea, full of mullet Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 72 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Conditions total= 72
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Bedónproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Río Purón
Water temperature for Brown Trout
Ideal15°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Good — water temperature is working for you, but river flow is the limiting factor today.
Likely species
Hatch timeline · todayPeak at 11:00
Hatch predictions
Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
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
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Purón · 1.2 kmTrout permit
Trout permit stretch — Puente de ferrocarril to 25 m aguas abajo de la última caseta de pescadores, en línea de playa.
Beat detail
Daily permit required, keep within bag limits
Upstream: Puente de ferrocarril
Downstream: 25 m aguas abajo de la última caseta de pescadores, en línea de playa
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Se requiere licencia de pesca asturiana
- Se aplica la normativa de trucha de mar — comprueba las normas vigentes.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
As it comes to the sea, full of mullet Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 72 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Conditions total= 72
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Bedónproxy
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts