Flows through the Fiemme and Fassa valleys framed by beautiful alpine scenery. Brown trout and marble trout in the water, with some sections regulated by hydro releases. Good dry fly fishing during caddis hatches when the light is right.
- Mixed
Rules at a glance
- Free fishing
- Fly only
A side-water session, not the main event
Low and clear — careful approach country. Long leader, small flies, slower casts.
75% confidence in this read
Live now
Conditions on the water
Trends shown where the gauge supports them
Level
Dry recently
No gauge reading
Water temp
6.1°C
Estimated
Clarity
Clear
Air temp
4°C
Wind
NE 7 km/h
Light breeze
Pressure
1013 hPa
Rain · 48h
0.8 mm
No meaningful rain
Rain · ahead
2.9 mm
Light rain · next 48h
Live readings — water temperature is an estimate where the gauge does not record it.
How to fish · for brown trout
The brief
When · where · method · kit
How to fish it · for brown trout
When
Through the Italian trout season — afternoon hatches in spring; dawn and dusk in summer warm. Val di Fiemme and Val di Fassa fish high-elevation cold water.
Where
Pool tails, riffle heads, and the seams through the dolomite gorges. The Avisio runs cleaner pocket water than the glacial Sarca and Noce.
Method
Upstream nymph through the broken water; dry to risers in the glides. Italian No-Kill stretches mandate single barbless — comply or fish elsewhere.
Kit
9 to 10 ft #4 for medium freestone with Alpine clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots — Alpine cobble runs slick.
Why this works
Fair conditions. Clarity is favourable (95), Prey activity is weakest (26).
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
4 patterns from this venue's curated pack
Detail · next 12h
Water temperature & rain
The two readings most likely to move the verdict
Water temperature for brown trout
Cool — slow6°C est.ideal 10–16°C
0°14°28°
Evidence
Why today scores what it does
6 factors, signed
- Temperature3728% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time5513% weight
- Pressure807% weight
- Prey Activity2612% weight
About this water
Avisio, end to end
Field guide · contributor-editedAvisio · about
What this water is
Background · character · contributors
About this water
Avisio · directions
How to get to the water
Directions
Avisio · zones
Where the rules change
Seasons · zones · per-species rules
Seasons & zones
- Trout2026-02-15 → 2026-10-07
- Marble trout2026-03-01 → 2026-09-30
Avisio · permits
Licences, sorteo, the rules
Permits & access
Permit required — see local rules.
- Italian fishing license (permesso di pesca) varies by provincia (province)
- Barbless hooks often required on protected waters
- Catch limits may apply.
Avisio
Terrain map
Flows through the Fiemme and Fassa valleys framed by beautiful alpine scenery.
Species
A side-water session, not the main event
Low and clear — careful approach country. Long leader, small flies, slower casts.
75% confidence in this read
Water temperature for brown trout
Cool — slow6°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
- Temperature3728% weight
- Flow6022% weight
- Clarity9518% weight
- Feeding Time5513% weight
- Pressure807% weight
- Prey Activity2612% weight
Conditions
Level
Dry recently
No gauge reading
Water temp
6.1°C
Estimated
Clarity
Clear
Air temp
4°C
Wind
NE 7 km/h
Light breeze
Pressure
1013 hPa
Rain · 48h
0.8 mm
No meaningful rain
Rain · ahead
2.9 mm
Light rain · next 48h
Live readings — water temperature is an estimate where the gauge does not record it.
How to fish it · for brown trout
When
Through the Italian trout season — afternoon hatches in spring; dawn and dusk in summer warm. Val di Fiemme and Val di Fassa fish high-elevation cold water.
Where
Pool tails, riffle heads, and the seams through the dolomite gorges. The Avisio runs cleaner pocket water than the glacial Sarca and Noce.
Method
Upstream nymph through the broken water; dry to risers in the glides. Italian No-Kill stretches mandate single barbless — comply or fish elsewhere.
Kit
9 to 10 ft #4 for medium freestone with Alpine clarity. Floating line, 12 ft leader to 4 to 5 lb fluoro. Studded boots — Alpine cobble runs slick.
Why this works
Fair conditions. Clarity is favourable (95), Prey activity is weakest (26).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Permits & access
Permit required — see local rules.
- Italian fishing license (permesso di pesca) varies by provincia (province)
- Barbless hooks often required on protected waters
- Catch limits may apply.
Directions
About this water
Flows through the Fiemme and Fassa valleys framed by beautiful alpine scenery. Brown trout and marble trout in the water, with some sections regulated by hydro releases. Good dry fly fishing during caddis hatches when the light is right.
- Mixed
Seasons & zones
- Trout2026-02-15 → 2026-10-07
- Marble trout2026-03-01 → 2026-09-30
Other water nearby · 5
Booking & contacts