Stillwater · Peat · Outer Hebrides / Lewis

Loch Langavat (Lewis)

Loch Langavat (Lewis) terrain map
Terrain map

Lewis's largest freshwater loch — a remote, peat-stained water stretching six miles through the interior moorland.

Prime · Atlantic Salmon
Primelive now
Prime conditions — go now
River dropping into shape after a lift. Classic taking window — fish through the heads and tails.
70% confidence
What moved it
  • LevelLight rain recentlyNo gauge reading
  • Water temp13.4°C
  • ClarityColoured
Conditions on the water
Estimate
Level
Light rain recently
No gauge reading
Water temp13.4°C
ClarityColoured
Weather15°C
WindSE 8 km/h
Pressure1019 hPa
Rain · recent6.6 mm
Rain · ahead18.5 mm

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

Water temperature for atlantic salmon
Ideal
13°C est.ideal 1014°C
0°14°28°
How to fish it · for atlantic salmon
When
All day — lough fishing is best in a good wave. Early morning and evening can produce in calm conditions.
Where
Work the drift lanes from the upwind shore across the productive zones. Cover bay edges, underwater reefs, and any areas where the bottom shoals.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
10 ft #7/8 single-hander, floating line, 10–12 lb fluoro leader. Boat seat and waterproofs for the drift.
Why this works
Excellent — water temperature is working for you, but water clarity is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

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Evidence
Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Lake OliveHatch
1
2
2
2
2
2
1

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

Permits & access
Permit required — see local rules.
  • Permission required from Grimersta Estate or relevant Lewis estate
  • Check FishHebrides for current availability
  • No rod licence needed in Scotland.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
About this water

Lewis's largest freshwater loch — a remote, peat-stained water stretching six miles through the interior moorland. Langavat holds wild brown trout, salmon, sea trout, and a relict population of Arctic charr. The trout average half a pound but fish to two pounds are taken regularly on the drift. Salmon and sea trout run the short outflow system from late June. Access is by foot across open moorland — a genuine wilderness experience. The loch responds dramatically to wind; a good wave on a warm overcast day can produce explosive sport with trout rising freely to bushy wet flies. Calm days are harder and demand patience. The isolation is both the challenge and the reward. Peat-stained moorland water defines this river. Atlantic salmon stocks are Category 3 (declining) — all salmon must be released.

  • Loch
  • Peat
Water quality (WFD)
  • EcologyHigh
  • ChemicalUnknown

SEPA (Scotland) · UKSC100071

Why this score · for atlantic salmon
  • Temperature10030% weight
  • Flow9025% weight
  • Clarity4020% weight
  • Feeding Time9015% weight
  • Pressure8510% weight
Directions
Seasons & zones
  • Salmon11 February → 31 October
  • Trout15 March → 6 October
  • Charvaries_by_estate → varies_by_estate

Sea trout: Variable seasonal (2026) — Hebridean sea trout stocks have collapsed under sustained sea-lice pressure from salmon farms on the west coast. Scottish sea trout rod catch was reported at 'lowest on record' in 2025. Langavat system retains a wild sea trout fishery but operates in a severely diminished baseline. Condition-led; catch-and-release expected.

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