Irish Sea water temperature

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

The current water temperature at Irish Sea is 15.3 °C (as of September 8, 2026, source: official monitoring networks).

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

15.3 °C

Measured: September 8, 2026 · continuously updated

💧 Water 15.3° · ☀️ Air 14.5° · high today 16.2°

Temperature trend of recent weeks

Irish Sea — Photo: Nicholas Mutton · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 8 data points since July 27, 2026.

Lowest recorded value: 15.3 °C on September 8, 2026 · highest value: 21.5 °C on August 14, 2026.

In September, temperatures have ranged between 15.3 °C and 19.0 °C.

Nearby waters

Irish Sea, Morecambe North at Town Halllancaster Mbc · 1.1 km away16.4 °C Irish Sea, Morecambe Bay · 15.5 km away16.3 °C Irish Sea, Fleetwood Beach · 18.8 km away16.1 °C Leven, Newby Bridge · 22.6 km away15.9 °C Windermere, Fell Foot · 23.0 km away16.9 °C

More measuring points: Irish Sea

Cleveleys at Cleveleyswyre Mbc18.6 °C Formby at Formbysefton Mbc17.8 °C Liverpool Bay17.1 °C Blackpool Central at St Chad'S Road17.0 °C St Annes North at Starr Hills16.5 °C Bispham at Bisphamblackpool Mbc16.4 °C

Frequently asked questions

Can you swim at Irish Sea right now?
The current water temperature is 15.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Irish Sea?
Currently 15.3 °C (updated continuously).

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