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.

Deal Pier

Tide Levels and Harmonics

Wave Spectra for 13/02/2026 11:30 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 (13/02/2026 11:30 GMT)
Significant Wave Height (m)2.98
Wave zero up crossing period (Spectrum Tz) (s)2.9
Wind Wave Significant Wave Height (m)2.51
Wind Wave Peak Period (s)7.5
Wind Wave Peak Period Direction (°)0
Swell Significant Wave Height (m)1.61
Swell Peak Period (s)31.9
Swell Peak Period Direction (°)0
% Swell29.1