Ireland in May: Long Evenings, Bluebells, and the Best Walking Conditions of the Year

May is the month many experienced Ireland travelers treat as the secret. The days are genuinely long (sunset approaching 9:30pm by month’s end), the countryside is at its most vivid green before summer fades the intensity, the wildflowers are at their best, and the tourist infrastructure is fully operational without the August crowds. The Aran Islands are accessible. The Ring of Kerry is driveable without hour-long waits at passing places. May is Ireland performing at full capability for a smaller audience.

Weather & Conditions

Dublin and East: 9–16°C. May is one of Ireland’s drier months — not dry exactly, but noticeably less wet than autumn and winter. Showers are shorter and sunnier. Dublin in May has a lightness that’s distinctive.

West Coast (Galway, Clare, Mayo, Donegal): 9–15°C. Atlantic showers with significant stretches of sunshine. The west coast in May light — late afternoon gold across the cliffs and bogs — is photographic at its best.

Kerry/Cork: 11–17°C. Ireland’s warmest area. May in Kerry can feel like early summer — warm enough for sitting outside, long enough to walk until 9pm.

Northern Ireland (Antrim Coast): 9–15°C. The Giant’s Causeway without winter wind or summer crowds is genuinely spectacular in May.

What to Do

Walk the Aran Islands (Inis Mór): The largest of the three Aran Islands, accessible by ferry from Ros a Mhíl or from Galway city (Aran Island Ferries), has a landscape of limestone pavement, prehistoric forts, and stone walls. The Dún Aonghasa cliff fort — a prehistoric stone fort on the island’s highest sea cliff, open on three sides to a 100m drop to the Atlantic — is one of the most dramatic human constructions in Ireland. May foot traffic is modest; August is three times as busy. Rent a bicycle in Kilronan to cover the island in a day.

Giant’s Causeway, Northern Ireland: The UNESCO-listed hexagonal basalt columns of the Antrim coast are at their May best — the coastal path from the visitor center to the columns is lined with wildflowers, and the sea access points are not choked with tour groups. The Carrick-a-Rede rope bridge (6km east along the coast path) sways pleasantly in May breezes.

Cliffs of Moher coastal walk: The 7.5km cliff walk from Doolin to the visitor center is fully open in May. The clifftop path gives better views than the visitor center platforms and is quieter. Start from Doolin and walk south to avoid the crowds arriving at the main car park.

Dingle Peninsula: The Dingle Way walking route circles the entire peninsula. In May, the ring fort of Dunbeg, the beehive huts (clochán), the early Christian Gallarus Oratory, and the town of Dingle itself are all accessible with minimal tourist pressure. Brandon Mountain — the Munster province’s highest — is accessible in decent May weather.

Glenveagh National Park, Donegal: Ireland’s second-largest national park in the remote northwest is spectacular in May — wild red deer in the upland bogs, Glenveagh Castle and its walled garden in full bloom, and the glacial lake below the mountain walls. Donegal in May has very few visitors and genuine wilderness quality.

Festivals & Events

Bealtaine (May 1): The ancient Celtic festival of summer’s beginning. Modern Bealtaine celebrations are modest (unlike Samhain/Halloween which has become a global export), but the date marks the traditional shift to summer farming in Irish rural communities. Some arts organizations and community groups hold Bealtaine events.

Fleadh Nua (Ennis, County Clare, late May): A traditional Irish music festival held over a week in Ennis, celebrating Connacht and traditional Irish music. Competitions, concerts, and sessions across the town’s many pubs. One of the best festival events for genuine traditional music rather than tourist versions.

Bank Holiday Weekend (first Monday in May): The first May bank holiday is one of Ireland’s main domestic travel weekends. Galway, Kerry, and the coastal towns fill with Irish day-trippers and weekend travelers. Book accommodation 3–4 weeks ahead.

Practical Tips

May is the best single month for driving the Wild Atlantic Way — the full 2,500km route from Donegal to West Cork. Traffic is manageable, all facilities are open, and the evening light is extraordinary for the final driving hours of the day.

Summer school bookings and campervan rentals for July–August are being made in May — if your trip is later in the summer, book now.

The Aran Islands ferry in May is weather-dependent. Ferries cancel in rough weather. Have a flexible backup plan if you’re specifically targeting Inis Mór.

Who May Is For

The honest best recommendation for a first-time Ireland visit: May. The landscape is vivid, the weather is as good as Ireland gets, the days are long, the crowds are manageable, and every attraction is open and accessible. If you can go only once, May is the answer.