Ireland Sea Temperature by Month

12-month annual sea surface temperature curves across all 10 surveyed coastlines in Ireland. Data queried directly from NOAA OISST v2.1 1991–2020 0.25° grid climatology.

Notice: 30-year historical climatological monthly mean (1991–2020), not a live single-day sensor forecast.

Coastlines & Monthly Curves in Ireland

Dog's Bay

Roundstone, Connemara · Golden Sand

Peak August: 15.9°C (Jun: 13.6°C · Sep: 15.1°C)

Keem Bay

Achill Island, County Mayo · Rocky Cove

Peak August: 15.4°C (Jun: 13.2°C · Sep: 14.8°C)

Barleycove Beach

Mizen Peninsula, West Cork · Golden Sand

Peak August: 16.0°C (Jun: 14°C · Sep: 15.3°C)

Coumeenoole Beach

Dingle Peninsula · Rocky Cove

Peak August: 15.6°C (Jun: 13.7°C · Sep: 14.9°C)

Ballymastocker Bay

Portsalon, Donegal · Golden Sand

Peak August: 14.9°C (Jun: 12.5°C · Sep: 14.5°C)

Strandhill Beach

Strandhill, County Sligo · Volcanic Black Sand

Peak August: 15.5°C (Jun: 13.3°C · Sep: 14.9°C)

Inchydoney

County Cork · Golden Sand

Peak August: 16.2°C (Jun: 14.1°C · Sep: 15.5°C)

Banna Strand

County Kerry · Golden Sand

Peak August: 15.8°C (Jun: 13.8°C · Sep: 15°C)

Inch Beach

Dingle Peninsula, County Kerry · Golden Sand

Peak August: 15.8°C (Jun: 13.8°C · Sep: 15°C)

Curracloe Beach

County Wexford · Golden Sand

Peak August: 15.1°C (Jun: 12.6°C · Sep: 15.1°C)