Irish Sea water temperature

Irish Sea, Bispham at Bisphamblackpool Mbc · Sea/Coast

The current water temperature at Irish Sea is 16.4 °C (as of September 4, 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.

16.4 °C

Measured: September 4, 2026 · continuously updated

💧 Water 16.4° · ☀️ Air 14.6° · high today 15.8°

Temperature trend of recent weeks

Irish Sea — Photo: Dr Neil Clifton · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 9 data points since July 23, 2026.

Lowest recorded value: 16.4 °C on September 4, 2026 · highest value: 20.6 °C on July 23, 2026.

In September, temperatures have ranged between 16.4 °C and 17.3 °C.

Nearby waters

Irish Sea, Blackpool · 3.5 km away16.0 °C Irish Sea, Cleveleys at Cleveleyswyre Mbc · 3.6 km away18.6 °C Irish Sea, Blackpool Central at St Chad'S Road · 5.1 km away17.0 °C Irish Sea, Blackpool South at Pleasure Beach · 6.5 km away16.3 °C Irish Sea, Fleetwood Beach · 8.9 km away16.1 °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 Llandudno16.4 °C

Frequently asked questions

Can you swim at Irish Sea right now?
The current water temperature is 16.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Irish Sea?
Currently 16.4 °C (updated continuously).

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