Castlebar weather in May 2025

Expect 14°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Castlebar in May. Check more long-term weather averages for Castlebar in May before you book your next holiday to Ireland in 2025/2026.

  • 14°C maximum daytime temperature in May in Castlebar14
    14°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in May in Castlebar19
    19 days with some rainfall
  • 6°C minimum night-time temperature in May in Castlebar6
    6°C min night temperature
  • 16 hours of daylight per day in May in Castlebar16
    16 hours of daylight per day
  • No heat & humidity in May in Castlebar0
    No heat & humidity
  • 79 mm monthly rainfall in May in Castlebar79
    79 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Castlebar5
    5 (Moderate) UV index

More about Castlebar

Castlebar by month

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

Daytime temperatures usually reach 14°C in Castlebar in May, falling to 6°C at night.

How sunny is it in Castlebar in May?

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

Does it rain in Castlebar in May?

There are usually 19 days with some rain in Castlebar in May and the average monthly rainfall is 79mm.

Castlebar May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:01 20:09
Friday, 16th May 2025 04:33 20:35
Saturday, 31st May 2025 04:14 20:57

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