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

Wave Spectra for 27/04/2025 03:30(i) GMT

Wave Spectra page developed in conjunction with Fugro GB Limited.

(i) stands for Iridium

Turning point search range: (Min>5): to (Max<40):  
Sea and Swell Summary for (27/04/2025 03:30(i) GMT)
Significant Wave Height (m)0.74
Wave zero up crossing period (Spectrum Tz) (s)5.6
Wind Wave Significant Wave Height (m)0.67
Wind Wave Peak Period (s)10
Wind Wave Peak Period Direction (°)347
Swell Significant Wave Height (m)0.32
Swell Peak Period (s)11.8
Swell Peak Period Direction (°)310.8
% Swell19.1