#1 in September
15.5°C
NOAA Season Curve (May–Oct):
M
12.5°
J
14.6°
J
15.9°
A
16.4°
S
15.5°
O
13.8°
NOAA OISST v2.1 (1991–2020 30-YEAR CLIMATOLOGY)
IEIreland Sea Temperature in September
Historical 30-year sea surface temperatures across 11 coastlines in Ireland for September. 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.
Select Month
View 12-Month Annual Overview →Ireland Beaches in September
Individual coordinate lookups from NOAA OISST v2.1 0.25° marine grid.
Showing 11 coastlines
Explore Sea Temperatures by Country
Spain(23.6°C)Albania(25.5°C)Montenegro(25.7°C)Turkey(27.2°C)Italy(25.9°C)Cyprus(27.7°C)Greece(25.4°C)France(22.4°C)Croatia(25.1°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)United Kingdom(16.1°C)Ireland(15.9°C)Faroe Islands(10.9°C)Iceland(10.9°C)Finland(16.6°C)
