Killarney weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: June – September
What is the weather like in Killarney in May?
In May, Killarney is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. Expect around 6 hours of sunshine a day. It rains often – on about 15 days, adding up to 93 mm. All in all, May is a so-so month for a holiday in Killarney.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 15 h 38 min05:45 – 21:23
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 75 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Dublin
How the score comes together
- Temperatureweight 50 %78 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %19 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Killarney in May: quick answers
Is Killarney hot in May?
No. In May, Killarney is cool: daytime highs average 15 °C and nights drop to about 8 °C.
Does it rain much in Killarney in May?
It rains often – on about 15 days, adding up to 93 mm.
Killarney month by month
The whole year in KillarneyAll destinations: IrelandWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences