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 water level data (OD) 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 Limited

Latest Wave Data

Latest Wave Data
Time (GMT)20-05-2026 09:00
Latitude49.89132
Longitude-6.31362
Wave Height (m)2.16
Max Wave Height (m)3.14
Tpeak (s)8.3
Tz (s)6.3
Peak Direction (degrees)229
Spread (degrees)37
Sea Temp (°C)12.5
Energy Period (s)7.9
Wave Power (kW/m)18.1