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)12-06-2026 01:00
Latitude49.89267
Longitude-6.31154
Wave Height (m)1.05
Max Wave Height (m)1.6
Tpeak (s)6.3
Tz (s)4.4
Peak Direction (degrees)309
Spread (degrees)46
Sea Temp (°C)13.8
Energy Period (s)5.9
Wave Power (kW/m)3.18