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.

Porthleven

Wave Spectra for 23/03/2025 13:31 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 (23/03/2025 13:31 GMT)
Significant Wave Height (m)0.67
Wave zero up crossing period (Spectrum Tz) (s)3.9
Wind Wave Significant Wave Height (m)0.39
Wind Wave Peak Period (s)6.7
Wind Wave Peak Period Direction (°)229
Swell Significant Wave Height (m)0.56
Swell Peak Period (s)12.5
Swell Peak Period Direction (°)247.5
% Swell67