Ballycastle weather in May 2025

Expect 55°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Ballycastle in May. Check more long-term weather averages for Ballycastle in May before you book your next holiday to Northern Ireland in 2025/2026.

  • 55°F maximum daytime temperature in May in Ballycastle55
    55°F max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in May in Ballycastle17
    17 days with some rainfall
  • 43°F minimum night-time temperature in May in Ballycastle43
    43°F min night temperature
  • 16 hours of daylight per day in May in Ballycastle16
    16 hours of daylight per day
  • No heat & humidity in May in Ballycastle0
    No heat & humidity
  • 2.5 inches monthly rainfall in May in Ballycastle2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Ballycastle5
    5 (Moderate) UV index
  • 48°F sea temperature in May in Ballycastle48
    48°F sea temperature

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The May weather guide for Northern Ireland (Ballycastle) 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 the UK

How warm is it in Ballycastle in May?

Daytime temperatures usually reach 55°F in Ballycastle in May, falling to 43°F at night.

How sunny is it in Ballycastle in May?

There are normally 6 hours of bright sunshine each day in Ballycastle in May - that's 36% of daylight hours.

How warm is the sea around Ballycastle in May?

The average sea temperature around Ballycastle in May is 48°F.

Does it rain in Ballycastle in May?

There are usually 17 days with some rain in Ballycastle in May and the average monthly rainfall is 2.5 inches.

Ballycastle May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:44 20:02
Friday, 16th May 2025 04:14 20:30
Saturday, 31st May 2025 03:53 20:53

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