Irish Sea water temperature

Irish Sea, Morecambe South at Midland Hotel · Sea/Coast

The current water temperature at Irish Sea is 15.7 °C (as of September 23, 2026, source: Environment Agency).

The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.

15.7 °C

Measured: September 23, 2026 · continuously updated

💧 Water 15.7° · ☀️ Air 12.2° · high today 13.4°

Temperature trend of recent weeks

Nearby waters

Irish Sea, Morecambe North at Town Halllancaster Mbc · 1.1 km away15.9 °C Irish Sea, Morecambe Bay · 15.4 km away14.4 °C Irish Sea, Fleetwood Beach · 18.8 km away16.1 °C Leven, Newby Bridge · 22.6 km away13.8 °C Windermere, Fell Foot · 23.0 km away16.7 °C

More measuring points: Irish Sea

Cleveleys at Cleveleyswyre Mbc18.6 °C Formby at Formbysefton Mbc17.8 °C Southport at Southportsefton Mbc17.2 °C Allonby at West Windsallerdale Mbc17.1 °C Ainsdale at Ainsdalesefton Mbc16.6 °C St Annes North at Starr Hills16.5 °C

Frequently asked questions

Can you swim at Irish Sea right now?
The current water temperature is 15.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Irish Sea?
Currently 15.7 °C (updated continuously).

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