Irish Sea water temperature

Irish Sea, St.bees at St.beescopeland Mbc · Sea/Coast

The current water temperature at Irish Sea is 19.3 °C (as of August 17, 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.

19.3 °C

Measured: August 17, 2026 · continuously updated

💧 Water 19.3° · ☀️ Air 14.5° · high today 16.2°

Temperature trend of recent weeks

Irish Sea — Photo: John Gibson · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 8 data points since July 10, 2026.

Lowest recorded value: 17.3 °C on July 26, 2026 · highest value: 20.0 °C on July 10, 2026.

Nearby waters

Irish Sea, Seascale at Seascale Northcopeland Mbc · 13.0 km away19.6 °C Derwentwater, Keswick · 32.3 km away17.3 °C Irish Sea, Allonby at West Windsallerdale Mbc · 32.9 km away20.2 °C Irish Sea, Silecroft at Silecroftcopeland Mbc · 34.4 km away21.1 °C Coniston Water, Coniston · 37.8 km away19.1 °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 19.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Irish Sea?
Currently 19.3 °C (updated continuously).

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