Lough Conn

Lake

In County Mayo, Lough Conn draws anglers and birdwatchers to its shallow waters and reed-fringed shores. Visitors come for trout and salmon fishing, boating, lakeside villages and quiet drives along the shoreline.

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In this guide

Lough Conn essentials

Address: Lough Conn, County Mayo, Ireland
Admission: Free (natural lake)

About Lough Conn

Lough Conn is a large freshwater lake in County Mayo in the west of Ireland, notable for recreational fishing and open-water birdlife. It is one of the principal lakes in the region and forms part of a wider wetland and lowland landscape.

Angling for brown trout and coarse species is a common activity, and the lake is used for boating and local leisure pursuits. Several small islands and inlets create sheltered bays and varied shoreline habitat.

The lake has long been used by local communities for fishing and navigation and features in local drainage and land-use histories. Management focuses on fisheries, water quality and conservation of wetland habitats.

Lough Conn lies in north County Mayo, northwest Ireland, within easy reach of towns such as Ballina and Crossmolina and around an hour by road from larger regional centres. The surrounding landscape is lowland and bog with agricultural use around the shorelines.

  • Fishing: Well known as a brown-trout fishery and for coarse angling; boat and shore fishing are common uses of the lake.
When to Go

Best Time to Visit Lough Conn

Visit Lough Conn from late spring through summer (May-September) for the most pleasant weather and outdoor access.

Late spring-summer (best)
May-September · 10-20°C
Mild temperatures and long daylight are ideal for fishing, boating and lakeside walks around Lough Conn.
Autumn-winter
October-April · 0-10°C
Cooler, wetter and windier conditions with shorter days; winter can be blustery and damp though birdlife remains active.

Weather & Climate near Lough Conn

Climate

Lough Conn's climate is classified as Oceanic - Oceanic climate with cool summers (peaking in August) and cold winters (coldest in February). Temperatures range from 3°C to 18°C. Abundant rainfall (1112 mm/year), wettest in November.

Air Quality: AQI 25 Good
Best Time to Visit
JuneJulyAugust
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° 118 mm overcast 91% 5.6 m/s 0.0 low 7.7h
February Poor 3° - 8° 2° 78 mm overcast 90% 5.5 m/s 0.1 low 9.5h
March Acceptable 4° - 9° 3° 91 mm overcast 88% 5.5 m/s 0.3 low 11.7h
April Acceptable 5° - 12° 5° 63 mm overcast 86% 4.8 m/s 0.7 moderate 13.9h
May Acceptable 7° - 14° 11° 72 mm overcast 84% 4.6 m/s 1.1 high 15.8h
June Good 9° - 16° 13° 66 mm overcast 84% 4.5 m/s 1.3 high 16.9h
July Good 11° - 18° 15° 66 mm overcast 86% 4.3 m/s 1.2 high 16.4h
August Good 11° - 18° 15° 85 mm overcast 87% 4.2 m/s 0.9 moderate 14.7h
September Acceptable 10° - 16° 13° 101 mm overcast 87% 4.7 m/s 0.6 moderate 12.5h
October Acceptable 8° - 13° 10° 121 mm overcast 89% 5.0 m/s 0.2 low 10.3h
November Poor 5° - 10° 5° 128 mm overcast 91% 5.0 m/s 0.1 low 8.3h
December Poor 4° - 9° 3° 123 mm overcast 92% 5.3 m/s 0.0 low 7.1h
Getting There & Around

How to Get to Lough Conn

Lough Conn is in County Mayo, Ireland, just west of the town of Ballina. The easiest way is to drive to Ballina (the town is served by regional bus routes) and then follow local county roads north or west from Ballina to lakeside access points and car parks; many popular shore spots are a short drive from the town.

If using public transport, arrive at Ballina by bus and then take a short taxi or local bus to the lakeshore villages; walking distances from lakeside car parks or village bus stops to the shore are typically only a few minutes.

Tips for Visiting Lough Conn

  • Plan early-morning visits for the best light for photography and to catch waterfowl activity; birdwatching is often at its best at dawn along the quieter eastern and northern shores.
  • Avoid weekend crowds by choosing weekdays or the shoulder season outside peak angling competitions - anglers and local outings concentrate at weekends, especially in summer.
  • Be mindful of private shorelines; use designated public access points and car parks around Crossmolina and townland signposted entrances to reach the lake legally and avoid trespass.