Sligo weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Poor
Best time to visit: April – June
What is the weather like in Sligo in May?
In May, Sligo is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 11.5 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. It rains often – on about 16 days, adding up to 99 mm. All in all, May is not an ideal month for a holiday in Sligo.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 15 h 58 min05:31 – 21:29
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 73 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Dublin
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 20 %18 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Sligo in May: quick answers
Is Sligo hot in May?
No. In May, Sligo is cool: daytime highs average 14 °C and nights drop to about 9 °C.
Can you swim in Sligo in May?
Only if you don't mind cold water: in May the sea averages just 11.5 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Sligo in May?
It rains often – on about 16 days, adding up to 99 mm.
Sligo month by month
The whole year in SligoAll destinations: IrelandWhere to go in MaySea temperature 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