Lough Corrib
The largest lake in the Republic, shallow and scattered with islands, known for wild brown trout and early church ruins.
Updated 4 September 2026

AI illustration
Lough Corrib is the largest lake in the Republic of Ireland, a shallow sheet of water running north from Galway city toward Mayo and dividing the limestone farmland of the east from the bog and quartzite of Connemara. Local counting gives it an island for every day of the year. Inchagoill, near the middle, holds the ruins of two early churches and a carved inscribed pillar, and boats run out to it from Oughterard and Cong in season. Anglers know the lake for wild brown trout and for the mayfly hatch in May, when boats work the shallows in numbers. The water leaves for the sea by the short Corrib river.
Highlights
- Inchagoill - an island with early church ruins and a carved inscribed pillar.
- The mayfly hatch - the May rise that fills the lake with fishing boats.
- The Cong shore - wooded limestone country at the northern end of the lake.
- The eastern islands - low limestone islets scattered across shallow water.
When to go
May is the lake's month, for the mayfly and for long evenings on the water. Boat trips to the islands run from about April to September and stop when the weather turns. The lake is shallow and gets rough quickly in wind, so sailings do cancel. Winter leaves you the shore walks and not much else.
Good to know
There is no single viewpoint that shows you the lake, so a boat is more or less required and the trips depend on weather. The island ruins are modest and the guide's commentary carries them. Fishing here is for people who already fish. Casual visitors find the shoreline flat, and public access to the water is limited in places.
Nearby
Cong sits at the north end; Galway city is at the outflow to the south.
Key facts
Source: Wikidata, item Q848917, read on 18 October 2026.
What to pack for Lough Corrib
Chosen from what this place is for. Tap a kit for the full checklist.
- Travel rod + reel - A packable multi-piece rod fits in a case and covers most holiday fishing. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- A small tackle selection - Hooks, weights, line and a few lures or flies suited to local waters. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


