Ireland in May: Weather, Crowds & What to Expect

Eastern & Dublin (Leinster and East Coast)

May often delivers some of the most agreeable weather of the year on the east coast: comfortable daytime temperatures, long daylight, and generally fewer heavy storms. Urban gardens and coastal walks between Dun Laoghaire and Howth can be delightful; ferry services to nearby islands run more regularly. Tourist numbers pick up but are not overwhelming; pack a light rain jacket and expect sunblocked afternoons mixed with blustery sea breezes.

The Midlands & Shannon Basin (Central Plains)

May in the midlands brings warming days and the landscape turns green and park-like; boat tours out of Athlone start to appear more frequently and lakeside walks become enticing. Although drier than the west, sudden showers still break a warm spell, and evenings can be cool. This is a good month for birdwatching on the Shannon and for visiting outdoor heritage parks - bring layers and binoculars for wetland hides.

Southwest (Cork, Kerry, Ring of Kerry, Dingle Peninsula)

May is one of the best months for the southwest: mild daytime temperatures and relatively stable weather bring more reliable conditions for the Ring of Kerry drive and boat trips from Portmagee. Puffin and chough activity around Skellig shores and cliffs increases and tour operators resume more frequent runs. Accommodation is busier on bank holidays, so book ahead for popular guesthouses and pack layered clothing for morning chill and warm afternoons.

West Coast & Connemara / Galway / Clare (Aran Islands, Cliffs of Moher)

May tends to be one of the friendliest months on the west: relatively mild, with increased chances of calm spells that allow Aran Island ferries and Skellig trips to run more often. Wildflowers on the Burren and along coastal lanes are striking, and the Galway International Arts Festival activity builds in the city. Shoulder-season crowds are modest but growing; pack layers and an evening fleece for cool coastal nights.

Northern & Northwest (Antrim Coast, Derry, Donegal)

May sees improved conditions for coastal drives and hill walks, with longer dry spells that make boat trips from Greencastle and Portrush more likely to run. The north’s beaches show their best colours and quiet bays are pleasant for walks; Donegal’s wild landscapes open up for longer treks. Expect variable weather but generally good conditions for outdoor activity; comfortable waterproofs and midlayers will cover most situations.