Ireland in May: what to expect

May is statistically Ireland's driest and sunniest month, though "driest" still means rain somewhere most weeks. Expect a mix: bright mornings, a shower by mid-afternoon, then a long clear evening. Rain usually passes in 20–40 minutes rather than settling in for the day.

Temperatures are mild, not warm. Dublin and the east run a degree or two higher than the Atlantic coast, where wind off the sea makes 14 °C feel cooler. The south-west around Kerry and West Cork is the mildest and also the wettest. UV is low but not zero on clear days.

May sits in the sweet spot: attractions are open and staffed, but the coach season has not peaked. The exception is the first weekend, when the May bank holiday sends Dublin and the west coast to July-level demand — book beds and rental cars two to three months ahead for that weekend.

Outside the bank holiday, hotel and B&B rates run below June–August levels, and you can usually book a car at short notice. Midweek is noticeably quieter than weekends everywhere except Dublin, where city breaks keep demand steady all week.

The month's fixed point is the May bank holiday, the first Monday, which creates a three-day weekend across the country. Beyond that, May is festival season for the arts rather than for big national events: local arts, food and maritime festivals appear in towns around the coast, and the traditional music session calendar is in full swing in Galway, Doolin, Dingle and Westport.

The other date to note is mid-May, when boat trips to Skellig Michael off the Kerry coast normally begin for the season. Sailings are weather-dependent and sell out, so book ahead if that is the reason for your trip.

May suits the west and south-west better than any other month before the summer rush. Long evenings mean you can drive a coastal route after dinner and still have light, and the roads are not yet carrying August traffic.

Base yourself in one or two places rather than looping the island. Two or three nights in Dublin, then three or four in Galway for Connemara and the Burren, or in Killarney for the Ring of Kerry and Dingle. The Wicklow Mountains and Glendalough work as an easy day from Dublin.

Pack for four seasons in one day, with rain as the default rather than the exception. A waterproof shell with a hood beats an umbrella on the coast, where wind makes umbrellas useless. Layers — base layer, fleece, shell — let you adjust from 8 °C morning to 16 °C afternoon.

Footwear matters more than anything else: waterproof walking shoes or boots for cliff paths, bog trails and wet grass. Add a warm hat and light gloves for exposed headlands, sunscreen for long clear days, and a swimsuit if you plan to use a beach or a seaweed bath.

April is cooler and wetter but quieter, with Easter as the one busy weekend. June brings the longest days of the year and the best weather window for the west before school holidays start, at higher prices. July is peak season: Galway fills for the Arts Festival and the Races, and rental cars need booking well ahead.

If you want May's conditions with fewer people, the second half of the month after the bank holiday is the pick. If you want warmer sea and settled weather, September is the other strong month.