Northern Ireland weather in May 2023

  • 14°C maximum daytime temperature in May in Northern Ireland (Belfast)14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Northern Ireland (Belfast)16
    16 days with some rainfall
  • 6°C minimum night-time temperature in May in Northern Ireland (Belfast)6
    6°C min night temperature
  • 16 hours of daylight per day in May in Northern Ireland (Belfast)16
    16 hours of daylight per day
  • No heat & humidity in May in Northern Ireland (Belfast)0
    No heat & humidity
  • 65 mm monthly rainfall in May in Northern Ireland (Belfast)65
    65 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Northern Ireland (Belfast)5
    5 (Moderate) UV index
  • 9°C sea temperature in May in Northern Ireland (Belfast)9
    9°C sea temperature

Below are average maximum temperatures at popular destinations in Northern Ireland in May. Select a destination to see more weather parameters.

More destinations >>

  • Explore UK pickup locations for Budget car hire
  • Book cars at airports, train stations, city centres & more
  • Extras available include sat nav, mobile wifi & child seats

Recommended for Northern Ireland

The May weather guide for Northern Ireland (Belfast) 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.

  • Top deals & discounts
  • Northern Ireland weather overview
  • Northern Ireland climate averages by month
  • More destinations
  • Best time to go to Northern Ireland
  • Northern Ireland 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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

Back to top

More about the UK

How warm is it in Northern Ireland in May?

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

How sunny is it in Northern Ireland in May?

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

Is the sea cold around Northern Ireland in May?

The average sea temperature around Belfast, Northern Ireland in May is 9°C.

Does it rain in Northern Ireland in May?

There are usually 16 days with some rain in Belfast, Northern Ireland in May and the average monthly rainfall is 65mm.

Northern Ireland May sunrise & sunset times

Browse the sunrise and sunset times for Northern Ireland in May 2023. Select a month to view Northern Ireland sunrise and sunset times for the next 12 months. The Northern Ireland sunrise and sunset times shown below are for Belfast.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st May 2023 05:46 20:57
Tuesday, 16th May 2023 05:17 21:24
Wednesday, 31st May 2023 04:56 21:47

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.