Limestone · West / Connacht

Lough Mask

View south across the full expanse of Lough Mask from the western shore, distant southern hills.
Contributor photo

Lough Mask from the west shore

Limnoporus - CC BY-SA 4.0

Wild brown trout lake connected to Corrib via underground limestone channels — a separate character despite the hidden link.

Fair · Trout
Gosling · 8-10
Fairlive now
Murrough expected on Lough Mask
Good wave on — drift country. A useful wave. Work the productive shore.
55% confidence
What moved it
  • WindW 7 km/hLight breeze
Today’s fly
Gosling
Gosling8-10
High-confidence seasonal pick
Conditions on the water
Live gauge
Wind
Light breeze
W 7 km/h
N
W
from the west
WaveRipple
Water temp18.1°C
Air temp12°C
CloudOvercast
Pressure1026 hPa
Rain · recent0.0 mm

Live readings only. Trends shown where the gauge supports them.

How to fish it · for trout
When
Mayfly into Green Peter from the third week of May through mid-June — a six-week peak. Daytime through the hatch with a good wave; evenings warm and calm for the sedge fall.
Where
Partry shore and Cushlough Bay are the named drifts. Rocky points, bay margins, and the shallower limestone shelves where food concentrates. Stay off the deep open basin — the trout aren't there.
Method
Drift broadside in a good wave across rocky points and bay margins. Team of three wets early — Bibio on the bob, Fiery Brown on the point. Switch to spent drake during mayfly.
Kit
10 to 11 ft #6 boat rod, floating line, 6 to 8 lb fluoro. Drogue for the big lanes — Mask is exposed and the wind builds. Long-handled net.
The plan
Plan A

Set up a broadside drift and cover the water systematically. Work Spent Gnat on the bob and Shipman's Buzzer on the point.

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

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Green PeterHatch
2
3
2
Murrough (Great Red Sedge)Hatch
2
3
2
Daddy Long LegsHatch
2
3
2
Mayfly (Green Drake)Hatch
2
2

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

Ranked for today
Trout fly box
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
  • No permit needed — state rod licence only
  • Boats from Ballinrobe, Tourmakeady, Cushlough
  • A guide who knows how to handle the boat and where to look for fish is worth every penny — the vast lough has moods and hazards that locals know.
What's coming
Plan ahead
5-day outlook
Condition match
51%
Cloud70%
Wind30%
Temp60%

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

Other water nearby · 5
Lough Carra
8.0 km
Brown trout
Lough Corrib
17 km
Brown trout · Salmon · Pike
Ballin Lough (Westport)
25 km
Rainbow trout · Brown trout
Redman's Lough
37 km
Sea trout
White's Lough (Connemara Gowla system)
37 km
Sea trout
Gallery · 6
  1. View south across the full expanse of Lough Mask from the western shore, distant southern hills.
    Lough Mask from the west shore
  2. Wide panoramic view of Lough Mask showing open water across the southern basin.
    Lough Mask panorama
  3. Rocky shoreline of White Island on Lough Mask at evening, calm water reflecting sunset light.
    Lough Mask evening
  4. Dramatic lenticular clouds above Lough Mask with the lough surface below.
    Lenticular clouds over Lough Mask
  5. Open water of Lough Mask looking west-southwest from the eastern shore.
    Lough Mask
  6. Terrain map of the venue
    Terrain map
About this water

Wild brown trout lake connected to Corrib via underground limestone channels — a separate character despite the hidden link. Deeper and more exposed than Corrib, which means it demands respect from boat anglers. Exceptional mayfly and olive hatches. Ferox in the deep water. Many regard Mask's trout as larger on average, and the fishing — when conditions align — can be spectacular. Dapping is excellent when the breeze is right. A guide who knows how to handle the boat and where to look for fish is worth every penny — the vast lough has moods and hazards that locals know.

  • Lough system
  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown
What this classification means

WFD code normalized 2026-06-18: IE_WE_30_665a → IEWE_30_665A (EPA national format → EEA WISE euSurfaceWaterBodyCode; same water body, now joinable to WISE). Status confirmed against EEA WISE 2022 (3rd RBMP). Source: discodata.eea.europa.eu. | Prior note: EPA WFD 2019-2024 (lake layer) — Lough Mask: Good ecological status. Re-tagged 2026-06-18 from IEWE_30C060300 (a river/stream water body, not the lough) to the lough's own EPA lake water body. Source: EPA Ireland WFD 2019-2024 classification (catchments.ie / EDEN).

EPA (Ireland) · IEWE_30_665A

Why this score
  • Wind conditions (ripple) are not ideal for this water.
  • Murrough is in its seasonal window, boosting the chance of targeted feeding.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout15 February → 30 September
Related guides
Irish Loughs Playbooklough-style fishingThermal Layers & Troutreading depth and temperatureConnemaraIrish fishing
Booking & contacts