In May warmest sea in Ireland is usually observed in the following locations: Limerick, Killarney, Cork.
Table below shows the average sea water temperature for marine resorts of Ireland in May for the last three years.
| Place name | May 2025 | May 2024 | May 2023 |
|---|---|---|---|
| Limerick | 58.6°F | 55.2°F | 55.0°F |
| Killarney | 58.0°F | 54.8°F | 54.9°F |
| Cork | 57.0°F | 54.6°F | 53.9°F |
| Dublin | 54.8°F | 53.1°F | 53.0°F |
Charts below show average sea water temperature for Ireland resorts with the warmest sea in May.
You can also check other months of the year to see sea temperature of Ireland resorts at that time.
