Stillwater · Mixed · Magallanes, CL

Lago Fagnano / Chilean Tierra del Fuego

Lago Fagnano / Chilean Tierra del Fuego — Lago Fagnano

Fagnano is a big, cold water at the world's southern edge — a glacially-formed lake straddling the Chile-Argentina border beneath the Cordillera Darwin, known locally on the Argentine side as Lago Kami.

Fair · Trout
A respectable few hours, if you choose your moments
Glassy and bright — hard work without a breeze. Hard work without breeze. Look for the dimples.
49% confidence
limited data

Lago Fagnano / Chilean Tierra del Fuego is often best in spring through autumn.

What moved it
  • WindSW 5 km/hCalm · Gusts to 13 km/h
Conditions on the water
Estimate
Wind
Calm · Gusts to 13 km/h
SW 5 km/h
N
SW
from the south-west
WaveFlat calm
Water temp8.0°C
Air temp2°C
CloudOvercast
Pressure1028 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

How to fish it · for Trout
When
Austral season — roughly November to May; verify the current local regulation window.
Where
With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.
The plan
Plan A

With limited drift, anchor or fish static from sheltered positions. Work a bushy searching pattern on the bob and drop a contrasting nymph on the point. In the calm, a single dry fly or a slowly-fished nymph tends to out-fish an active retrieve.

Plan B

If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Bank

Flat calm suits bank fishing near features — points, weed beds, and inflows where fish patrol.

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Claret DunHatch
2
3
2
Heather FlyHatch
2
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Murrough (Great Red Sedge)Hatch
1
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Permits & access
Permit required — see local rules.
  • Argentine Patagonian continental permit (or Chilean Sernapesca licence) required
  • Rules vary by province, National Park and reach — confirm annexes before fishing.
What's coming
Plan ahead
5-day outlook
Condition match
59%
Cloud50%
Wind65%
Temp60%

A reasonable day here, though cloud isn't quite in the sweet spot.

Gallery · 2
  1. Lago Fagnano / Chilean Tierra del Fuego — Lago Fagnano
    Lago Fagnano
  2. Terrain map of the venue
    Terrain map
About this water

Fagnano is a big, cold water at the world's southern edge — a glacially-formed lake straddling the Chile-Argentina border beneath the Cordillera Darwin, known locally on the Argentine side as Lago Kami. It holds sea-run brown trout of genuine size, fish that have run in from the Beagle Channel system and grown hard and heavy in Tierra del Fuego's short, intense season. Takes come at dawn, dusk, or under cloud, when the fish move on the flats and drop-offs; a Sunray Shadow, Collie Dog or Stoat's Tail fished with purpose, worked slowly through the taking time, is the method that produces results. Wind here is a constant, often violent, factor, and access into this remote country needs planning well in advance. This is specialist water, and it fishes on the sea trout's terms, not the angler's.

  • Lake
  • Mixed
Why this score
  • autumn conditions with overcast skies and calm wind.
Directions
Apple MapsGoogle Maps
Seasons & zones

Sea trout: Variable seasonal (2026)

Related guides
Thermal Layers & Troutreading depth and temperatureEuro Nymphingsubsurface methods
Booking & contacts