Water temperature for Rainbow Trout
Warm — slow19°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow Trout
When
Stocked weekly, so the best fishing often follows a fresh drop — ask locally or simply fish soon after the season opens on 18 April. Runs to 14 October, dawn to dusk, seven days a week.
Where
The two-kilometre reserve between the old Brun intake and the Mellier canal — deep pools alternating with longer shallow glides, typical steep-valley torrent structure.
Method
Nothing fussy — spinner, bait or fly all take fish here, and there's no catch-and-release requirement. Minimum size 25cm, six fish per permit, up to three permits a day.
Kit
9 ft #5/6 for a small mountain torrent. Nymph or small streamer on a floating line covers most of the water.
Why this works
Water at 18.8°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 5pm
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour 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.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Rainbow Trout fly box
Top
6-10 · Pattern
Swing, sub-surface
Permits & access
Permit required — see local rules.
- Managed tourist reserve (riserva a cattura) — daily permit required, weekly stocking
- Minimum size 25cm, 6 fish per permit, maximum 3 permits per angler per day
- No catch-and-release requirement.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 19°C — probably warm enough to stress Rainbow Trout . These are likely cooler.
The full read · show the working · for Rainbow Trout · confidence 90%
How the 35 is built — score × weight = contribution
Temperature75 × 28%21.0
Flow60 × 22%13.2
Clarity85 × 18%15.3
Feeding Time65 × 13%8.5
Pressure75 × 7%5.3
Insect activity60 × 12%7.2
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Rainbow trout 2026-04-18 → 2026-10-14
Related guides
Booking & contacts
Ayasse
Water temperature for Rainbow Trout
Warm — slow19°C est.ideal 10–18°C
0°14°28°
How to fish it · for Rainbow Trout
When
Stocked weekly, so the best fishing often follows a fresh drop — ask locally or simply fish soon after the season opens on 18 April. Runs to 14 October, dawn to dusk, seven days a week.
Where
The two-kilometre reserve between the old Brun intake and the Mellier canal — deep pools alternating with longer shallow glides, typical steep-valley torrent structure.
Method
Nothing fussy — spinner, bait or fly all take fish here, and there's no catch-and-release requirement. Minimum size 25cm, six fish per permit, up to three permits a day.
Kit
9 ft #5/6 for a small mountain torrent. Nymph or small streamer on a floating line covers most of the water.
Why this works
Water at 18.8°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 5pm
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour 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.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Rainbow Trout fly box
Top
6-10 · Pattern
Swing, sub-surface
Permits & access
Permit required — see local rules.
- Managed tourist reserve (riserva a cattura) — daily permit required, weekly stocking
- Minimum size 25cm, 6 fish per permit, maximum 3 permits per angler per day
- No catch-and-release requirement.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 19°C — probably warm enough to stress Rainbow Trout . These are likely cooler.
The full read · show the working · for Rainbow Trout · confidence 90%
How the 35 is built — score × weight = contribution
Temperature75 × 28%21.0
Flow60 × 22%13.2
Clarity85 × 18%15.3
Feeding Time65 × 13%8.5
Pressure75 × 7%5.3
Insect activity60 × 12%7.2
Conditions total= 71
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Rainbow trout 2026-04-18 → 2026-10-14
Related guides
Booking & contacts