Celtic Sea, Carbis Bay · Sea/Coast
The current water temperature at Celtic Sea is 18.4 °C (as of June 29, 2026, source: official monitoring networks).
Can you swim at Celtic Sea right now?
The current water temperature is 18.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Celtic Sea?
Currently 18.4 °C (updated continuously).