NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
IE

Ireland Sea Temperature in October

Historical 30-year sea surface temperatures across 11 coastlines in Ireland for October. 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.
13.7°C
Bracing / Crispaverage across 11 surveyed coastlines in Ireland, October
  • Ranges 13.1°C at Ballymastocker Bay to 14.2°C at Curracloe Beach.
  • No coastline in Ireland reaches 21°C in any month — this is wetsuit or cold-water swimming.
  • 2.2°C cooler than Ireland’s August peak of 15.9°C (see August).

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The October Thermal Lag Advantage

Because seawater has a high specific heat capacity, it acts as a massive thermal battery. Southern European and Mediterranean basins absorb solar energy all summer, reaching maximum heat storage by late August. In October, while air temperatures drop, the water releases heat slowly, which creates sea temperatures that are typically 3°C to 5°C warmer than in June.

CYPRUS (AYIA NAPA / PROTARAS)
24.5°C
Effortless swimming
TURKEY (ANTALYA / KAŞ)
24.8°C
Warm bathwater
GREECE (CRETE / RHODES)
23.4°C
Extended season
MALTA & GOZO
23.2°C
Crystal clear
Field Guides:October Swimming Guide November Swimming Guide

Ireland Beaches in October

Individual coordinate lookups from NOAA 0.25° marine grid.

Showing 11 coastlines
Inchydoney
#2 in October
13.9°C
Ireland flagCounty Cork, Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
11.7°
J
14.1°
J
15.8°
A
16.2°
S
15.5°
O
13.9°
N
11.9°
View Full Beach Guide
Keem Bay
#3 in October
13.8°C
Ireland flagCounty Mayo (Achill Island), Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
12.5°
J
14.6°
J
15.9°
A
16.4°
S
15.5°
O
13.8°
N
11.9°
View Full Beach Guide
Barleycove Beach
#4 in October
13.8°C
Ireland flagMizen Peninsula, West Cork, Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
11.8°
J
14.0°
J
15.5°
A
16.0°
S
15.3°
O
13.8°
N
11.9°
View Full Beach Guide
Derrynane Beach
#5 in October
13.8°C
Ireland flagCounty Kerry (Ring of Kerry), Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
12.5°
J
14.6°
J
15.9°
A
16.4°
S
15.5°
O
13.8°
N
11.9°
View Full Beach Guide
Coumeenoole Beach
#7 in October
13.8°C
Ireland flagCounty Kerry (Dingle Peninsula), Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
12.5°
J
14.6°
J
15.9°
A
16.4°
S
15.5°
O
13.8°
N
11.9°
View Full Beach Guide
Banna Strand
#8 in October
13.5°C
Ireland flagCounty Kerry, Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
11.6°
J
13.8°
J
15.3°
A
15.8°
S
15.0°
O
13.5°
N
11.9°
View Full Beach Guide
Inch Beach
#9 in October
13.5°C
Ireland flagDingle Peninsula, County Kerry, Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
11.6°
J
13.8°
J
15.3°
A
15.8°
S
15.0°
O
13.5°
N
11.9°
View Full Beach Guide
Strandhill Beach
#10 in October
13.3°C
Ireland flagStrandhill, County Sligo, Ireland
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
11.1°
J
13.3°
J
14.9°
A
15.5°
S
14.9°
O
13.3°
N
11.6°
View Full Beach Guide

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)