National Network of Regional Coastal Monitoring Programmes

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Note that these are real-time data and are not quality-controlled. Long-range graphs are plotted from a randomised subsample of half-hourly data.

St Mary's Sound


Live wave data (GMT) (updated every 5 seconds)

This one-second stream of data to the website is experimental and is being developed in conjunction with Fugro GB Marine Ltd

Latest Wave Data
Date/Time (GMT)23-01-2023 08:30
Wave Height (m)0.12
Max Wave Height (m)0.18
Tpeak (s)12.5
Tz (s)5.6
Peak Direction (degrees)7
Spread (degrees)27
Sea Temp (°C)10.4
Energy Period (s)10.4
Wave Power (kW/m)0.07