Daytime highs, nighttime lows and the warmest cities across Ireland this May.
Ireland, experiences moderate average maximum daytime temperatures in May, ranging from 13°C (55°F) in Greencastle to 16°C (61°F) in Tullamore. Nighttime temperatures generally drop to 8°C (46°F) in Tullamore and 9°C (48°F) in Greencastle.
Curious about the May temperatures in the prime spots of Ireland? Navigate the map below and tap on a destination dot for more detailed stats.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Ireland.
Marker color shows the average daytime high temperature in May: blue is cold, red is hot.
Drill down to May weather for any region in Ireland.
Pick a city to see its May weather averages.
Expect daytime temperatures around 16°C (61°F) in Dublin. That makes May a moderate month for Ireland.
After dark, Dublin cools to about 8°C (46°F) on an average May night.
Based on our systematic data collection, Tullamore has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 16°C (61°F), while at night it goes down to an approximate temperature of 8°C (46°F).
The coldest city in May in Ireland is Greencastle when we check our database. The maximum daytime temperatures are around 13°C (55°F) and minimum nighttime temperatures fall around 9°C (48°F).
Dublin enjoys a balanced 188 hours of sunlight. This makes it neither too overcast nor too sunny.
The water temperature averages approximately 11°C (52°F) in Cork this month, so not the best month to swim.
We have much more information about the climate in Ireland.
Weather and climate has detailed information for every country in the world. Are you going to Ireland? Get detailed historical weather averages for many cities in Ireland.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
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