Ireland weather in May - temperature, rain and is it a good time to visit?

May is one of the best months for a holiday in Ireland.
Daytime
15°
Night
☀️ Day length
15 h 53 min
Chance of rain
59%
Thunder days
1%
Humid days
1%
WEATHER THROUGH THE YEARIreland - May vs the year12°15°18°11°19°13°18°12°17°10°14°10°CHANCE OF RAIN (%)756758565950606952596371JanFebMarAprMayJunJulAugSepOctNovDecWARMESTJul (19°)COLDESTJan (8°)DRIESTJun (50%)WETTESTJan (75%)world-prices.com · 2026-07-08 · ★ best months
In May, Ireland averages about 15° during the day and 8° at night. Rain is fairly likely - around a 59% chance on a given day, so pack for showers.

Ireland weather all year - average temperatures and rain

MonthDayNightChance of rain
January 8℃3℃75%
February 8℃2℃67%
March 9℃3℃58%
April 12℃5℃56%
May 15℃8℃59%
June ★ 18℃11℃50%
July ★ 19℃13℃60%
August ★ 18℃12℃69%
September ★ 17℃10℃52%
October ★ 14℃8℃59%
November 10℃5℃63%
December 9℃4℃71%
★ - months most often recommended for travel

Where is it warmest in Ireland in May? Weather by city

PlaceDayNight🌊 SeaChance of rain
Galway 16℃8℃15℃73%
Limerick 16℃8℃-76%
Dublin 15℃6℃14℃70%
Belfast 15℃9℃-56%
Swords 15℃6℃14℃70%
Waterford 15℃10℃13℃35%
Cork 14℃7℃14℃71%
Kilkenny 14℃9℃-43%
Sligo 14℃10℃14℃26%
Athlone 13℃6℃-71%
Travelling soon? Check the live 14-day weather forecast for Ireland.

Ireland weather - other months

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember