May · Ireland
Best time to visit Dublin in May Weather, crowds & prices
Weather in Dublin in May
Average temperature 12°C, 55 mm of rain, about 18 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
7.9/10
Ranked #2 of 12 months
- Avg temp
- 12°C
- Rainfall
- 55 mm
- Humidity
- 86%
- Days with 6h+ sun
- 18
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Dublin scores 7.9/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 12°C, 55 mm of rain, and roughly 18 days with 6+ hours of sunshine this month.
Georgian doors, pub sessions, and coastal cliffs feel finest May through September.
May in Dublin: strong conditions, 2nd of 12
May averages 12°C (54°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 55 mm, so plan one flexible day in three; you still get about 18 days with 6+ hours of sunshine and 15.6 hours of daylight.
It scores 7.9/10 here, 2nd of 12 months, against 8.5/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Dublin in May?
- In May, Dublin averages 12°C, 55 mm of rain, and about 18 days with 6+ hours of sunshine. Its climate-comfort score is 7.9/10.
- Is May a good time to visit Dublin?
- May earns a 7.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Dublin in May?
- Expect about 55 mm of rain in May. Average humidity is 86% and there are about 18 days with 6+ hours of sunshine.
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