Skip to content
seatemperatures.net

Warmest sea in Ireland in October

169 coastal locations in Ireland ranked by their typical October sea temperature. Region-wide average in October: 13.8°C. The top of the list is where to find the warmest swimming this month.

Warmest in October

Courtown

14.6°C October mean in Ireland

Regional October average

13.8°C

across all 169 coastal locations in Ireland

Vs annual mean

+1.5°C

above the year-round regional average

What the Ireland sea feels like in October

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

Ireland monthly average 9.0°C to 16.0°C
J
F
M
A
M
J
J
A
S
O
N
D
  • Warmest month August 16.0°C
  • Coldest month February 9.0°C
  • Annual mean 12.3°C
  • Months above 20°C 0 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Ireland month rankings:

Ireland sea temperature map (live)

The map shows today's latest reading at every Ireland location. The list below is based on the typical October mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Ireland locations in October

Sorted by the typical October mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location October mean
1 Courtown County Wexford 14.6°C
2 Arklow 14.5°C
3 Wicklow 14.5°C
4 Loch Garman County Wexford 14.5°C
5 Rosslare Europort County Wexford 14.5°C
6 Wexford Harbour County Wexford 14.5°C
7 Carnsore Point County Wexford 14.4°C
8 Rosslare Strand 14.4°C
9 Wexford 14.4°C
10 Kilmore Quay 14.4°C
11 Great Saltee County Wexford 14.3°C
12 Duncannon 14.3°C
13 Dunmore East 14.3°C
14 Ardmore 14.3°C
15 Baginbun Head County Wexford 14.2°C
16 Cheekpoint County Waterford 14.2°C
17 Fethard-on-Sea County Wexford 14.2°C
18 Kilmokea Point County Wexford 14.2°C
19 New Ross County Wexford 14.2°C
20 Tramore 14.2°C
21 Ballycotton County Cork 14.2°C
22 Youghal 14.2°C
23 Trá Mhór County Waterford 14.2°C
24 Clonea 14.1°C
25 Cork City County Cork 14.1°C
Show 25 more ▸
26 Crosshaven County Cork 14.1°C
27 Dungarvan 14.1°C
28 Garryvoe 14.1°C
29 Marino Point County Cork 14.1°C
30 Ringaskiddy County Cork 14.1°C
31 Roberts Cove County Cork 14.1°C
32 Waterford 14.1°C
33 Castletownshend County Cork 14.1°C
34 Garretstown Beach 14.1°C
35 Kilbrittain 14.1°C
36 Kinsale 14.1°C
37 Courtmacsherry County Cork 14.1°C
38 Carrigaline 14.1°C
39 Cobh 14.1°C
40 Cork 14.1°C
41 Myrtleville 14.1°C
42 Passage West 14.1°C
43 Clonakilty Bay County Cork 14.0°C
44 Kish Bank County Dublin 14.0°C
45 Carrigaholt County Clare 14.0°C
46 Clonakilty 14.0°C
47 Tarbert Island County Kerry 14.0°C
48 Baltimore County Cork 14.0°C
49 Inishmore (Killeany Bay) County Galway 14.0°C
50 Kilkieran County Galway 14.0°C

Coldest 10 in Ireland in October

Same data the other way. Helpful if you want to know which Ireland coasts to avoid for swimming in October.

# Location October mean
1 Drogheda 13.3°C
2 Blackrock County Louth 13.3°C
3 Soldiers Point County Louth 13.3°C
4 Gweedore County Donegal 13.4°C
5 Inishbofin County Donegal 13.4°C
6 Tory Island County Donegal 13.4°C
7 Buncrana 13.4°C
8 Belmullet 13.4°C
9 Balbriggan 13.4°C
10 Bettystown 13.4°C

More on this region