#1 in December
10.7°C
NOAA Season Curve (May–Oct):
M
10.6°
J
12.6°
J
14.2°
A
15.1°
S
15.1°
O
14.2°
N
12.4°
NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
IEIreland Sea Temperature in December
Historical 30-year sea surface temperatures across 11 coastlines in Ireland for December. Derived from NOAA 0.25° blended satellite and in-situ marine observations.
Climatology Notice: Temperatures represent the 30-year long-term historical average (1991–2020 normal), not a live single-day sensor forecast.
10.3°C
Bracing / Crispaverage across 11 surveyed coastlines in Ireland, December
- Ranges 10.0°C at Strandhill Beach to 10.7°C at Curracloe Beach.
- No coastline in Ireland reaches 21°C in any month — this is wetsuit or cold-water swimming.
- 5.6°C cooler than Ireland’s August peak of 15.9°C (see August).
Select Month
View 12-Month Annual Overview →Ireland Beaches in December
Individual coordinate lookups from NOAA 0.25° marine grid.
Showing 11 coastlines
Explore Sea Temperatures by Country
Spain(23.6°C)Italy(25.9°C)Turkey(27.3°C)France(22.4°C)Greece(25.4°C)Cyprus(27.7°C)Croatia(25.2°C)Albania(25.5°C)Montenegro(25.7°C)Malta(26.7°C)Bulgaria(25.1°C)Romania(24.7°C)Slovenia(25.4°C)Portugal(20.7°C)Poland(19°C)Sweden(18.3°C)Netherlands(18.5°C)Bosnia & Herzegovina(25.2°C)Monaco(24.6°C)Latvia(18.5°C)Estonia(18°C)Lithuania(18.8°C)Germany(18.6°C)Denmark(18°C)Norway(15.3°C)Belgium(18.7°C)Faroe Islands(10.9°C)United Kingdom(16.1°C)Ireland(15.9°C)Iceland(10.9°C)Finland(16.6°C)
