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.

Second Severn Crossing

Tide Levels and Harmonics

  

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)20-06-2025 07:30
Latitude-
Longitude-
Wave Height (m)0.06
Max Wave Height (m)0.16
Tpeak (s)-
Tz (s)1.9
Peak Direction (degrees)-
Spread (degrees)-
Sea Temp (°C)-
Energy Period (s)-
Wave Power (kW/m)-

Latest Tide Data

Latest Tide data
Time (GMT)20-06-2025 08:10
Elevation2.38
Residual-0.31
Next HW13:59, 11.13
Next LW20:11, 2.91
Highest Date27-04-2025
Highest Value15.33m
Lowest Date31-03-2025
Lowest Value0.03m