Letterkenny weather in May 2025

Expect 13°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Letterkenny in May. Check more long-term weather averages for Letterkenny in May before you book your next holiday to Ireland in 2025/2026.

  • 13°C maximum daytime temperature in May in Letterkenny13
    13°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in May in Letterkenny19
    19 days with some rainfall
  • 5°C minimum night-time temperature in May in Letterkenny5
    5°C min night temperature
  • 16 hours of daylight per day in May in Letterkenny16
    16 hours of daylight per day
  • No heat & humidity in May in Letterkenny0
    No heat & humidity
  • 82 mm monthly rainfall in May in Letterkenny82
    82 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Letterkenny5
    5 (Moderate) UV index

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The May weather guide for Ireland (Letterkenny) 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 Letterkenny in May?

Daytime temperatures usually reach 13°C in Letterkenny in May, falling to 5°C at night.

How sunny is it in Letterkenny in May?

There are normally 6 hours of bright sunshine each day in Letterkenny in May - that's 34% of daylight hours.

Does it rain in Letterkenny in May?

There are usually 19 days with some rain in Letterkenny in May and the average monthly rainfall is 82mm.

Letterkenny May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:51 20:07
Friday, 16th May 2025 04:21 20:34
Saturday, 31st May 2025 04:01 20:58

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