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.

Start Bay

Wave Spectra for 28/02/2026 23:19 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 (28/02/2026 23:19 GMT)
Significant Wave Height (m)0.9
Wave zero up crossing period (Spectrum Tz) (s)4.2
Wind Wave Significant Wave Height (m)0.84
Wind Wave Peak Period (s)6.3
Wind Wave Peak Period Direction (°)173
Swell Significant Wave Height (m)0.34
Swell Peak Period (s)12.5
Swell Peak Period Direction (°)185.6
% Swell13.9