Swimming in Ireland in may 2025 Sea temperature by city in may

Do you want to go to the beach in Ireland in may 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in may in Ireland by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Ireland in may 2025

Here, find the average sea temperature in Ireland in may in several coastal cities.

Leinster in may

on average:

51°F

min: 50°F / max: 53°F

on average:

51°F

min: 49°F / max: 52°F

Dalkey Island

on average:

51°F

min: 49°F / max: 53°F

Rosslare

on average:

52°F

min: 50°F / max: 54°F

on average:

52°F

min: 50°F / max: 54°F

Arklow

on average:

52°F

min: 50°F / max: 54°F

Munster in may

on average:

53°F

min: 52°F / max: 56°F

on average:

54°F

min: 52°F / max: 55°F

Ardmore

on average:

53°F

min: 51°F / max: 56°F

Castletownbere

on average:

54°F

min: 52°F / max: 56°F

on average:

53°F

min: 51°F / max: 55°F

Kilkee

on average:

53°F

min: 52°F / max: 55°F

Connacht in may

on average:

53°F

min: 51°F / max: 55°F

on average:

53°F

min: 51°F / max: 55°F

on average:

53°F

min: 51°F / max: 55°F

on average:

53°F

min: 51°F / max: 55°F

Aran Islands

on average:

53°F

min: 51°F / max: 55°F

Ballycastle

on average:

52°F

min: 50°F / max: 53°F

North East Ireland (Ulster) in may

on average:

52°F

min: 50°F / max: 54°F

on average:

52°F

min: 51°F / max: 53°F

on average:

51°F

min: 50°F / max: 53°F

Bundoran

on average:

52°F

min: 50°F / max: 54°F

Derrybeg

on average:

52°F

min: 50°F / max: 54°F

on average:

52°F

min: 51°F / max: 54°F

Where should you go swimming in Ireland in the month of may?

Swimming in Ireland in may is freezing

In may in Ireland swimming conditions are generally the same everywhere.

Forget about swimming in Dublin, Cork, Galway, Belmullet, Connemara National Park, Dingle, Dundalk, Dungloe, Killybegs, Letterkenny, Achill Island, Aran Islands, Ardmore, Ballycastle, Bundoran, Castletownbere, Dalkey Island, Derrybeg, Donegal, Dunfanaghy, Cliffs of Moher, Gleann Cholm Cille, Kilkee, Malin Head, Rosslare, Shannon, Skellig Islands, Streedagh Point, Tramore, Valentia, Waterford, Wexford, Arklow, Balbriggan, Ballina, Ballyshannon, Bray, Buncrana, Clonakilty, Cobh, Crosshaven, Dún Laoghaire, Dungarvan, Greystones, Kenmare, Killorglin, Kinsale, Laytown, Malahide, Moville, Skerries, Sligo, Tralee, Westport, Wicklow and Youghal in may! The water temperature is freezing, reaching as low as 50°F (and only 53°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in Ireland in may: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in may

Dublin

May
Average sea temperature 51°F
Minimum sea temperature 50°F
Maximum sea temperature 53°F
Average outside temperature 52°F
Maximum outside temperature 58°F
Minimum outside temperature 49°F
Precipitation 2.3in
Number of days of precipitation 3 jour(s)
(11%)
Cloud cover 52%
Our opinion freezing swimming

More information on swimming in Dublin in may

Cork

May
Average sea temperature 53°F
Minimum sea temperature 52°F
Maximum sea temperature 56°F
Average outside temperature 54°F
Maximum outside temperature 58°F
Minimum outside temperature 49°F
Precipitation 3.7in
Number of days of precipitation 6 jour(s)
(20%)
Cloud cover 55%
Our opinion freezing swimming

More information on swimming in Cork in may

Galway

May
Average sea temperature 53°F
Minimum sea temperature 51°F
Maximum sea temperature 55°F
Average outside temperature 54°F
Maximum outside temperature 59°F
Minimum outside temperature 49°F
Precipitation 4.3in
Number of days of precipitation 7 jour(s)
(22%)
Cloud cover 61%
Our opinion freezing swimming

More information on swimming in Galway in may

Belmullet

May
Average sea temperature 53°F
Minimum sea temperature 51°F
Maximum sea temperature 55°F
Average outside temperature 54°F
Maximum outside temperature 54°F
Minimum outside temperature 52°F
Precipitation 5.4in
Number of days of precipitation 9 jour(s)
(30%)
Cloud cover 57%
Our opinion freezing swimming

More information on swimming in Belmullet in may

Connemara National Park

May
Average sea temperature 53°F
Minimum sea temperature 51°F
Maximum sea temperature 55°F
Average outside temperature 52°F
Maximum outside temperature 56°F
Minimum outside temperature 47°F
Precipitation 3.7in
Number of days of precipitation 6 jour(s)
(19%)
Cloud cover 60%
Our opinion freezing swimming

More information on swimming in Connemara National Park in may

List of coastal cities in Ireland

Dublin in mayfreezing swimming
Cork in mayfreezing swimming
Galway in mayfreezing swimming
Belmullet in mayfreezing swimming
Connemara National Park in mayfreezing swimming
Dingle in mayfreezing swimming
Dundalk in mayfreezing swimming
Dungloe in mayfreezing swimming
Killybegs in mayfreezing swimming
Letterkenny in mayfreezing swimming
Achill Island in mayfreezing swimming
Aran Islands in mayfreezing swimming
Ardmore in mayfreezing swimming
Ballycastle in mayfreezing swimming
Bundoran in mayfreezing swimming
Castletownbere in mayfreezing swimming
Dalkey Island in mayfreezing swimming
Derrybeg in mayfreezing swimming
Donegal in mayfreezing swimming
Dunfanaghy in mayfreezing swimming
Cliffs of Moher in mayfreezing swimming
Gleann Cholm Cille in mayfreezing swimming
Kilkee in mayfreezing swimming
Malin Head in mayfreezing swimming
Rosslare in mayfreezing swimming
Shannon in mayfreezing swimming
Skellig Islands in mayfreezing swimming
Streedagh Point in mayfreezing swimming
Tramore in mayfreezing swimming
Valentia in mayfreezing swimming
Waterford in mayfreezing swimming
Wexford in mayfreezing swimming
Arklow in mayfreezing swimming
Balbriggan in mayfreezing swimming
Ballina in mayfreezing swimming
Ballyshannon in mayfreezing swimming
Bray in mayfreezing swimming
Buncrana in mayfreezing swimming
Clonakilty in mayfreezing swimming
Cobh in mayfreezing swimming
Crosshaven in mayfreezing swimming
Dún Laoghaire in mayfreezing swimming
Dungarvan in mayfreezing swimming
Greystones in mayfreezing swimming
Kenmare in mayfreezing swimming
Killorglin in mayfreezing swimming
Kinsale in mayfreezing swimming
Laytown in mayfreezing swimming
Malahide in mayfreezing swimming
Moville in mayfreezing swimming
Skerries in mayfreezing swimming
Sligo in mayfreezing swimming
Tralee in mayfreezing swimming
Westport in mayfreezing swimming
Wicklow in mayfreezing swimming
Youghal in mayfreezing swimming
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