Portlaoise weather in May 2025

Expect 15°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Portlaoise in May. Check more long-term weather averages for Portlaoise in May before you book your next holiday to Ireland in 2025/2026.

  • 15°C maximum daytime temperature in May in Portlaoise15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in May in Portlaoise17
    17 days with some rainfall
  • 6°C minimum night-time temperature in May in Portlaoise6
    6°C min night temperature
  • 16 hours of daylight per day in May in Portlaoise16
    16 hours of daylight per day
  • No heat & humidity in May in Portlaoise0
    No heat & humidity
  • 67 mm monthly rainfall in May in Portlaoise67
    67 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Portlaoise5
    5 (Moderate) UV index

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The May weather guide for Ireland (Portlaoise) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Ireland

How warm is it in Portlaoise in May?

Daytime temperatures usually reach 15°C in Portlaoise in May, falling to 6°C at night.

How sunny is it in Portlaoise in May?

There are normally 5 hours of bright sunshine each day in Portlaoise in May - that's 34% of daylight hours.

Does it rain in Portlaoise in May?

There are usually 17 days with some rain in Portlaoise in May and the average monthly rainfall is 67mm.

Portlaoise May sunrise & sunset times

Browse the sunrise and sunset times for Portlaoise in May 2025. Select a month to view Portlaoise sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:56 19:58
Friday, 16th May 2025 04:29 20:23
Saturday, 31st May 2025 04:10 20:44

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