Irish Sea water temperature
Irish Sea, Liverpool Bay · Sea/Coast
The current water temperature at Irish Sea is 12.9 °C (as of October 24, 2026, source: Cefas).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Measurement series & statistics
This measurement series includes 1025 data points since September 6, 2026.
Lowest recorded value: 12.9 °C on October 24, 2026 · highest value: 18.6 °C on September 6, 2026.
In October, temperatures have ranged between 12.9 °C and 16.8 °C.
The current value is 2.4 °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 12.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Irish Sea?
Currently 12.9 °C (updated continuously).
How warm is at Irish Sea in October?
In October, the water temperature recently averaged 15.3 °C.
