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)11-03-2026 00:00
Latitude49.89169
Longitude-6.31377
Wave Height (m)1.97
Max Wave Height (m)2.99
Tpeak (s)7.1
Tz (s)5.6
Peak Direction (degrees)212
Spread (degrees)40
Sea Temp (°C)11.1
Energy Period (s)7.1
Wave Power (kW/m)13.44