Irish Sea water temperature

Irish Sea, Walney West Shore at West Shorebarrow-In-Furness Mbc · 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 13.7°

Temperature trend of recent weeks

Nearby waters

Irish Sea, Walney Sandy Gap at Sandy Gapbarrow-In-Furness Mbc · 2.1 km away15.7 °C Irish Sea, Walney Biggar Bank at Biggar Bankbarrow-In-Furness Mbc · 3.0 km away15.8 °C Irish Sea, Haverigg at Haveriggcopeland Mbc · 7.7 km away15.9 °C Irish Sea, Silecroft at Silecroftcopeland Mbc · 12.1 km away16.1 °C Irish Sea, Morecambe Bay · 19.8 km away14.4 °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).

← All waters · Warmest beaches & coasts today · Water temperature in United Kingdom