Ireland in December: where is it warmest?
In December, Cork is the warmest place with 9 °C by day, Howth the coolest with 7 °C. 0 of 18 destinations have good holiday weather.
All destinations in December, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Cork | 17 | 9° | 11° | 2 h | 14 |
| Waterford | 15 | 9° | – | 2 h | 14 |
| Limerick | 7 | 9° | – | 2 h | 16 |
| Wexford | 7 | 9° | 11° | 2 h | 13 |
| Killarney | 7 | 9° | – | 2 h | 17 |
| Cóbh | 6 | 9° | 11° | 2 h | 14 |
| Tralee | 0 | 9° | 11° | 2 h | 18 |
| Dublin | 14 | 8° | 11° | 2 h | 12 |
| Kilkenny | 13 | 8° | – | 2 h | 12 |
| Drogheda | 8 | 8° | 10° | 2 h | 12 |
| Dundalk | 8 | 8° | 10° | 2 h | 12 |
| Bray | 8 | 8° | 11° | 2 h | 12 |
| Dún Laoghaire | 8 | 8° | 11° | 2 h | 12 |
| Galway | 4 | 8° | 10° | 2 h | 15 |
| Sligo | 0 | 8° | 10° | 1 h | 18 |
| Letterkenny | 0 | 8° | 10° | 1 h | 19 |
| Donegal | 0 | 8° | 10° | 1 h | 19 |
| Howth | 7 | 7° | 11° | 2 h | 13 |
Ireland in December: quick answers
Ireland in December: where is it warmest?
The warmest places in December are Cork (9 °C), Waterford (9 °C) and Limerick (9 °C).
Ireland in December: where is the sea warmest?
The sea is warmest at Cork (11 °C), Wexford (11 °C) and Cóbh (11 °C).
Ireland in December: where is the weather best?
The best holiday weather in December – warm, sunny and dry – is in Cork, Waterford and Dublin.
Ireland month by month
Ireland: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences