Dundalk weather in May 2026

Expect daytime maximum temperatures of 59°F in Dundalk, Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 2.5 inches of rainfall in the month.

  • 59°F maximum daytime temperature in May in Dundalk59
    59°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Dundalk16
    16 days with some rainfall
  • 43°F minimum night-time temperature in May in Dundalk43
    43°F min night temperature
  • 16 hours of daylight per day in May in Dundalk16
    16 hours of daylight per day
  • No heat & humidity in May in Dundalk0
    No heat & humidity
  • 2.5 inches monthly rainfall in May in Dundalk2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Dundalk5
    5 (Moderate) UV index
  • 52°F sea temperature in May in Dundalk52
    52°F sea temperature

More about Dundalk

Dundalk by month

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

Recommended for Ireland

Spabreaks.com: Buy spa vouchers & gifts

  • Treat a loved one to a special gift of a spa break
  • Choose between gift package voucher or spa voucher
  • Alternatively a monetary voucher allows them to pick
Go to Spabreaks.com deal >>

View all Spabreaks.com offers

The May weather guide for Ireland (Dundalk) 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)

Back to top

More about Ireland

How warm is it in Dundalk in May?

Daytime temperatures usually reach 59°F in Dundalk in May, falling to 43°F at night.

How sunny is it in Dundalk in May?

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

How warm is the sea around Dundalk in May?

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

Does it rain in Dundalk in May?

There are usually 16 days with some rain in Dundalk in May and the average monthly rainfall is 2.5 inches.

Dundalk May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 04:49 19:57
Saturday, 16th May 2026 04:21 20:24
Sunday, 31st May 2026 04:01 20:46

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^