Irish Sea water temperature

Irish Sea, West Kirby @ Dee Lane · Sea/Coast

The current water temperature at Irish Sea is 19.8 °C (as of August 18, 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.

19.8 °C

Measured: August 18, 2026 · continuously updated

💧 Water 19.8° · ☀️ Air 15.2° · high today 19.1°

Temperature trend of recent weeks

Irish Sea — Photo: Eirian Evans · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 8 data points since July 3, 2026.

Lowest recorded value: 19.8 °C on August 18, 2026 · highest value: 24.6 °C on July 15, 2026.

Nearby waters

Irish Sea, Meols at Dove Point Wirral Mbc · 4.9 km away19.6 °C Irish Sea, Moreton at Pasture Roadwirral Mbc · 7.2 km away19.3 °C Irish Sea, Wallasey at Harrison Drive, Wirral Mbc · 10.4 km away19.1 °C Irish Sea, Mersey- New Brighton Beach East · 12.9 km away19.4 °C Irish Sea, Formby at Formbysefton Mbc · 20.6 km away21.0 °C

More measuring points: Irish Sea

Southport at Southportsefton Mbc26.0 °C Walney Sandy Gap at Sandy Gapbarrow-In-Furness Mbc22.7 °C Walney Biggar Bank at Biggar Bankbarrow-In-Furness Mbc22.6 °C Ainsdale at Ainsdalesefton Mbc22.2 °C St.annes at St.annes Pierfylde Mbc21.9 °C St Annes North at Starr Hills21.9 °C

Frequently asked questions

Can you swim at Irish Sea right now?
The current water temperature is 19.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Irish Sea?
Currently 19.8 °C (updated continuously).

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