Irish Sea water temperature
Irish Sea, Seapoint · Sea/Coast
The current water temperature at Irish Sea is 14.6 °C (as of October 15, 2026, source: Commissioners of Irish Lights (EPA-Badestelle, Wert der Boje in der Bucht)).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Water quality
Official EPA rating: excellentMeasurement series & statistics
This measurement series includes 725 data points since September 15, 2026.
Lowest recorded value: 14.4 °C on October 11, 2026 · highest value: 16.9 °C on September 21, 2026.
In October, temperatures have ranged between 14.4 °C and 15.6 °C.
The current value is 0.5 °C below the October average of this series.
Nearby waters
More measuring points: Irish Sea
Frequently asked questions
Can you swim at Irish Sea right now?
The current water temperature is 14.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Irish Sea?
Currently 14.6 °C (updated continuously).
How warm is at Irish Sea in October?
In October, the water temperature recently averaged 15.1 °C.
How is the water quality at Irish Sea?
The official classification is: excellent.
