Water temperature for brown trout
Welfare risk24°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
⛔ Water at 24.4°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 12pm
Hatch predictions
Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daddy Long LegsHatch
2
3
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Beats · 2 · 1 reaches
Arrow beats — Fishing Passport · 2 beatsDay rods
Hergest Court, The Leen
The 2 beats
Hergest CourtDay tickets
Wye & Usk Foundation (Fishing Passport)
Just under 1.5 miles double-bank River Arrow (upper) just upstream of Kington. A small-stream trout fishery with good mayfly hatches — 7.5ft rod recommended as a maximum. Fishing rights retained by Kington Fishing Club, who may share the water. Grayling only an incidental catch here — this is a trout beat.
Fishing Passport, max 2 tickets/day, no dogs.
The LeenDay tickets
Wye & Usk Foundation (Fishing Passport)
Just under a mile of double-bank River Arrow upstream of Pembridge, marketed specifically as an autumn/winter grayling fishery. Season runs 1 Oct-31 Jan — chest waders strongly recommended.
Fishing Passport, max 2 tickets/day, no dogs, parking under 100m. Trotting with maggots also on offer for anglers avoiding cold-water wading.
What's coming
Plan ahead
5-day outlook
Water here around 24°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
The river Arrow flowing through the picturesque village of Eardisland Terrain map
The full read · show the working · for brown trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature0 × 28%0.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Limiting factor: Water temperature (24.4°C) is outside Brown Trout's preferred range (10–16°C)= 56
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts
Arrow
Editorial photo
The river Arrow flowing through the picturesque village of Eardisland
Philip Halling CC BY-SA 2.0
Water temperature for brown trout
Welfare risk24°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
⛔ Water at 24.4°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 12pm
Hatch predictions
Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Daddy Long LegsHatch
2
3
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Beats · 2 · 1 reaches
Arrow beats — Fishing Passport · 2 beatsDay rods
Hergest Court, The Leen
The 2 beats
Hergest CourtDay tickets
Wye & Usk Foundation (Fishing Passport)
Just under 1.5 miles double-bank River Arrow (upper) just upstream of Kington. A small-stream trout fishery with good mayfly hatches — 7.5ft rod recommended as a maximum. Fishing rights retained by Kington Fishing Club, who may share the water. Grayling only an incidental catch here — this is a trout beat.
Fishing Passport, max 2 tickets/day, no dogs.
The LeenDay tickets
Wye & Usk Foundation (Fishing Passport)
Just under a mile of double-bank River Arrow upstream of Pembridge, marketed specifically as an autumn/winter grayling fishery. Season runs 1 Oct-31 Jan — chest waders strongly recommended.
Fishing Passport, max 2 tickets/day, no dogs, parking under 100m. Trotting with maggots also on offer for anglers avoiding cold-water wading.
What's coming
Plan ahead
5-day outlook
Water here around 24°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
The river Arrow flowing through the picturesque village of Eardisland Terrain map
The full read · show the working · for brown trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature0 × 28%0.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Limiting factor: Water temperature (24.4°C) is outside Brown Trout's preferred range (10–16°C)= 56
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts