In December warmest sea in Ireland is usually observed in the following locations: Cork, Killarney, Dublin.
Table below shows the average sea water temperature for marine resorts of Ireland in December for the last three years.
| Place name | December 2024 | December 2023 | December 2022 |
|---|---|---|---|
| Cork | 51.3°F | 50.4°F | 50.3°F |
| Killarney | 51.2°F | 50.2°F | 50.1°F |
| Dublin | 49.7°F | 49.5°F | 48.8°F |
| Limerick | 49.6°F | 49.9°F | 47.7°F |
Charts below show average sea water temperature for Ireland resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of Ireland resorts at that time.
