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)23-03-2023 00:30
Wave Height (m)2.02
Max Wave Height (m)3.95
Tpeak (s)7.7
Tz (s)5.3
Peak Direction (degrees)200
Spread (degrees)33
Sea Temp (°C)10.6
Energy Period (s)6.8
Wave Power (kW/m)13.64