Celtic Sea water temperature

Celtic Sea, Polzeath Beach · Sea/Coast

The current water temperature at Celtic Sea is 19.6 °C (as of August 19, 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.

19.6 °C

Measured: August 19, 2026 · continuously updated

💧 Water 19.6° · ☀️ Air 16.9° · high today 18.0°

Temperature trend of recent weeks

Celtic Sea — Photo: Tagishsimon · CC BY-SA 3.0 · Wikimedia Commons

Measurement series & statistics

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

Lowest recorded value: 18.8 °C on July 3, 2026 · highest value: 21.0 °C on August 10, 2026.

Nearby waters

Celtic Sea, Daymer Bay Beach · 1.7 km away19.0 °C Celtic Sea, Trevone Bay Beach · 5.4 km away21.0 °C Celtic Sea, Harlyn Bay Beach · 6.9 km away22.2 °C Celtic Sea, Mother Ivey'S Bay · 7.8 km away21.9 °C Celtic Sea, Booby'S Bay · 8.7 km away22.5 °C

More measuring points: Celtic Sea

Booby'S Bay22.5 °C Constantine Bay Beach22.2 °C Harlyn Bay Beach22.2 °C Pendower Beach22.0 °C Mother Ivey'S Bay21.9 °C Swanpool Beach21.8 °C

Frequently asked questions

Can you swim at Celtic Sea right now?
The current water temperature is 19.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Celtic Sea?
Currently 19.6 °C (updated continuously).

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