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Sarah777 CC BY-SA 4.0 Wikimedia Commons

Lough Cullin

Lake

A western Irish lake near Foxford and Ballina known to anglers for trout and salmon, and used for boating and waterside walks.

Lough Cullin LimerickGalwayWestport, County MayoEnnisShannon, County ClareKing John's Castle (Limerick)ConnemaraAchill IslandLough Cullin

Lough Cullin essentials

Address: Lough Cullin, County Mayo, Connacht, Ireland
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About Lough Cullin

Lough Cullin is a lake in County Mayo in western Ireland. It lies close to and is hydrologically linked with the larger Lough Conn to the north.

The lake is used for recreational angling and supports populations of trout and salmon, making it popular with local anglers. Boating and shoreline fishing are common activities.

Like many Irish lowland lakes, Lough Cullin occupies a basin shaped by glacial action and has been used historically for fishing by local communities.

Geographically it sits in central County Mayo, forming part of the Conn-Moy lake system in the west of Ireland.

  • Connected to Lough Conn and River Moy: Hydrologically connected to Lough Conn and the River Moy system, influencing local angling and navigation.
When to Go

Best Time to Visit Lough Cullin

Best time: June-August for open-water activities and fishing.

Summer
June-August · 12-20°C
Best for boating and angling; long daylight and calmer water.
Spring
April-May · 6-14°C
Migratory birds arrive and the edges green up quickly; good for nature watching.
Autumn
September-October · 8-15°C
Fewer visitors and dramatic light but increasing rain.

Weather & Climate near Lough Cullin

Climate

Lough Cullin's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in July) and cold winters (coldest in January). Temperatures range from 2°C to 18°C. Abundant rainfall (1093 mm/year), wettest in November.

Air Quality: AQI 27 Good
Best Time to Visit
JuneJulySeptember
Temperature & Rainfall
Temperature Range
27°
Warmest Month
-5°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor 3° - 8° 2° 116 mm overcast 91% 5.4 m/s 0.0 low 7.9h
February Poor 3° - 8° 2° 78 mm overcast 90% 5.3 m/s 0.1 low 9.6h
March Acceptable 4° - 10° 3° 91 mm overcast 88% 5.3 m/s 0.4 low 11.7h
April Acceptable 5° - 12° 6° 60 mm overcast 86% 4.6 m/s 0.8 moderate 13.8h
May Acceptable 7° - 15° 11° 72 mm overcast 84% 4.5 m/s 1.2 high 15.7h
June Good 9° - 17° 13° 64 mm overcast 84% 4.3 m/s 1.4 high 16.7h
July Good 11° - 18° 15° 64 mm overcast 86% 4.1 m/s 1.2 high 16.2h
August Good 11° - 18° 15° 86 mm overcast 87% 4.1 m/s 1.0 moderate 14.6h
September Good 10° - 16° 13° 99 mm overcast 87% 4.5 m/s 0.7 moderate 12.5h
October Acceptable 7° - 13° 10° 118 mm overcast 89% 4.8 m/s 0.3 low 10.4h
November Acceptable 5° - 10° 5° 124 mm overcast 91% 4.8 m/s 0.1 low 8.4h
December Poor 4° - 9° 3° 121 mm overcast 92% 5.1 m/s 0.0 low 7.3h
Getting There & Around

How to Get to Lough Cullin

Lough Cullin is reached by regional roads off N5 and R315 around Castlebar and Pontoon in County Mayo. Local signage directs to parking and slipways; small local operators offer angling guidance.

Tips for Visiting Lough Cullin

  • If angling, check local regulations and seasonal restrictions for salmon and trout.
  • Drive scenic R318 and stop at viewpoints toward Lough Cullin and Lough Conn for classic postcard vistas.