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

  

Average values for 2025

MonthHs (m)Tp (s)Tz (s)Dirp (degrees)TSea (degrees C)
January1.889.65.720611.3
February1.878.35.418610.7
March1.178.7520110.9
April1.227.54.818211.6
May0.776.94.318613.4
June0.847.34.724314.5
July0.77.54.726015.9
August0.957.94.721516.8
September1.268.35.122515.3
October1.288.24.921514.3
November1.628.45.320713.3
December2.579.76.321612.5

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