Lough Cullin

Lake Lowland lake in County Mayo, trout fishing

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

Main image

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.
Lough Cullin
Lough Cullin, County Mayo, Connacht, Ireland
53.9701, -9.1781

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.

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.

Best Time to Visit
JuneJulySeptember
Temperature & Rainfall
Temperature Range
27°
Warmest Month
-5°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 8°C and lows of 3°C. Significant rainfall (116 mm) and mostly overcast skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
91%
Humidity
Very Humid

Weather

116 mm
Rainfall
5.4 m/s
Wind
Light Breeze
0.0
UV Index
Low
7.9h daylight

February

February is the coolest month with highs of 8°C and lows of 2°C. Moderate rainfall (78 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
90%
Humidity
Very Humid

Weather

78 mm
Rainfall
5.3 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.6h daylight

March

March is cold with highs of 10°C and lows of 4°C. Regular rainfall (91 mm) and mostly overcast skies.

52 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
88%
Humidity
Very Humid

Weather

91 mm
Rainfall
5.3 m/s
Wind
Light Breeze
0.4
UV Index
Low
11.7h daylight

April

April is cold with highs of 12°C and lows of 5°C. Moderate rainfall (60 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
86%
Humidity
Very Humid

Weather

60 mm
Rainfall
4.6 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
13.8h daylight

May

May is cool with highs of 15°C and lows of 7°C. Moderate rainfall (72 mm) and mostly overcast skies.

56 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
15°
84%
Humidity
Very Humid

Weather

72 mm
Rainfall
4.5 m/s
Wind
Light Breeze
1.2
UV Index
High
15.7h daylight

June

June is cool with highs of 17°C and lows of 9°C. Moderate rainfall (64 mm) and mostly overcast skies.

62 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
17°
84%
Humidity
Very Humid

Weather

64 mm
Rainfall
4.3 m/s
Wind
Light Breeze
1.4
UV Index
High
16.7h daylight

July

July is cool with highs of 18°C and lows of 11°C. Moderate rainfall (64 mm) and mostly overcast skies.

62 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 18°
86%
Humidity
Very Humid

Weather

64 mm
Rainfall
4.1 m/s
Wind
Light Breeze
1.2
UV Index
High
16.2h daylight

August

August is cool with highs of 18°C and lows of 11°C. Regular rainfall (86 mm) and mostly overcast skies.

60 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 18°
87%
Humidity
Very Humid

Weather

86 mm
Rainfall
4.1 m/s
Wind
Light Breeze
1.0
UV Index
Moderate
14.6h daylight

September

September is cool with highs of 16°C and lows of 10°C. Regular rainfall (99 mm) and mostly overcast skies.

62 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 16°
87%
Humidity
Very Humid

Weather

99 mm
Rainfall
4.5 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
12.5h daylight

October

October is cool with highs of 13°C and lows of 7°C. Significant rainfall (118 mm) and mostly overcast skies.

52 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
89%
Humidity
Very Humid

Weather

118 mm
Rainfall
4.8 m/s
Wind
Light Breeze
0.3
UV Index
Low
10.4h daylight

November

November is cold with highs of 10°C and lows of 5°C. The wettest month with heavy rain (124 mm) and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
91%
Humidity
Very Humid

Weather

124 mm
Rainfall
4.8 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.4h daylight

December

December is cold with highs of 9°C and lows of 4°C. Significant rainfall (121 mm) and mostly overcast skies.

42 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

121 mm
Rainfall
5.1 m/s
Wind
Light Breeze
0.0
UV Index
Low
7.3h daylight

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