Castletownbere weather in May 2026

Expect daytime maximum temperatures of 57°F in Castletownbere, Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 3.7 inches of rainfall in the month.

  • 57°F maximum daytime temperature in May in Castletownbere57
    57°F max day temperature
  • 6 hours of sunshine per day
  • 18 days with some rainfall in May in Castletownbere18
    18 days with some rainfall
  • 45°F minimum night-time temperature in May in Castletownbere45
    45°F min night temperature
  • 16 hours of daylight per day in May in Castletownbere16
    16 hours of daylight per day
  • No heat & humidity in May in Castletownbere0
    No heat & humidity
  • 3.7 inches monthly rainfall in May in Castletownbere3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Castletownbere5
    5 (Moderate) UV index
  • 52°F sea temperature in May in Castletownbere52
    52°F sea temperature

More about Castletownbere

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The May weather guide for Ireland (Castletownbere) 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)  |  Imperial (°F)

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More about Ireland

How warm is it in Castletownbere in May?

Daytime temperatures usually reach 57°F in Castletownbere in May, falling to 45°F at night.

How sunny is it in Castletownbere in May?

There are normally 6 hours of bright sunshine each day in Castletownbere in May - that's 37% of daylight hours.

How warm is the sea around Castletownbere in May?

The average sea temperature around Castletownbere in May is 52°F.

Does it rain in Castletownbere in May?

There are usually 18 days with some rain in Castletownbere in May and the average monthly rainfall is 3.7 inches.

Castletownbere May sunrise & sunset times

Browse the sunrise and sunset times for Castletownbere in May 2026. Select a month to view Castletownbere sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:11 20:03
Saturday, 16th May 2026 04:46 20:27
Sunday, 31st May 2026 04:28 20:47

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