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)28-09-2023 20:00
Wave Height (m)1.71
Max Wave Height (m)3.62
Tpeak (s)11.1
Tz (s)6.7
Peak Direction (degrees)229
Spread (degrees)39
Sea Temp (°C)15.4
Energy Period (s)8.1
Wave Power (kW/m)11.67