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

Latest Waves Data

Time (GMT)LatitudeLongitudeWave Height (m)Max Wave Height (m)Tpeak (s)Tz (s)Peak Direction (degrees)Spread (degrees)Sea Temp (°C)Energy Period (s)Wave Power (kW/m)
29-11-2022 15:3049.89261-6.313730.961.4811.84.82987312.77.33.3
Date Highest Hs 2022 Storm Alert Threshold
(0.25 yr Return Period Hs)
Swell Alert Threshold
(0.25 yr Return Period Te)
18-02 5m 4.47m 10.88s
Time (GMT)LatitudeLongitudeWave Height (m)Max Wave Height (m)Tpeak (s)Tz (s)Peak Direction (degrees)Spread (degrees)Sea Temp (°C)Energy Period (s)Wave Power (kW/m)
13-08-2022 00:0049.89290-6.313080.420.573.93.21212416.64.30.38
12-08-2022 23:3049.89257-6.313860.440.744.23.31083316.64.20.4
12-08-2022 23:0049.89254-6.313880.440.664.43.51043416.64.60.44
12-08-2022 22:3049.89248-6.313860.390.589.13.73435816.65.20.39
12-08-2022 22:0049.89220-6.314010.40.574.841253616.65.50.43
12-08-2022 21:3049.89196-6.313980.420.638.34.42354716.56.30.55
12-08-2022 21:0049.89181-6.313960.480.679.14.62315216.46.80.77
12-08-2022 20:3049.89166-6.313960.440.616.74.31494716.36.40.61
12-08-2022 20:0049.89161-6.313860.430.7116.74.32075815.86.60.6
12-08-2022 19:3049.89175-6.313860.410.6516.74.51437516.76.60.55
12-08-2022 19:0049.89148-6.313730.470.699.14.52384616.66.50.71
12-08-2022 18:3049.89129-6.313080.550.814.64.21004516.65.80.87
12-08-2022 18:0049.89129-6.312680.530.774.84863315.55.40.75
12-08-2022 17:3049.89191-6.312780.590.964.84.19024175.40.92
12-08-2022 17:0049.89259-6.311650.580.854.23.97928175.40.89
12-08-2022 16:3049.89252-6.311580.611.044.64982817.65.20.96
12-08-2022 16:0049.89260-6.311560.681.024.44982717.551.14
12-08-2022 15:3049.89271-6.311540.651.094.641003618.25.11.07
12-08-2022 15:0049.89286-6.311670.681.174.44893218.85.21.18
12-08-2022 14:3049.89293-6.311800.620.934.441032519.45.31
12-08-2022 14:0049.89284-6.311750.620.983.73.61003119.34.80.9
12-08-2022 13:3049.89278-6.311540.6813.93.51153314.74.51.02
12-08-2022 13:0049.89278-6.311580.661.044.23.51153515.14.30.92
12-08-2022 12:3049.89279-6.311670.71.114.23.51133515.44.21.01
12-08-2022 12:0049.89281-6.311750.621.043.93.41133215.54.10.78
12-08-2022 11:3049.89287-6.311880.570.8943.31073515.540.63
12-08-2022 11:0049.89284-6.311950.510.873.23.3982816.44.30.55
12-08-2022 10:3049.89298-6.312460.490.693.73.41073916.94.50.53
12-08-2022 10:0049.89277-6.313600.410.724.23.51204216.95.20.42
12-08-2022 09:3049.89218-6.314050.390.5216.73.92052716.96.30.47
12-08-2022 09:0049.89191-6.314010.410.6218.24.32002616.970.58
12-08-2022 08:3049.89175-6.313940.380.5618.24.42196916.87.60.54
12-08-2022 08:0049.89164-6.314030.360.4616.74.32185016.57.50.48
12-08-2022 07:3049.89164-6.313790.340.4818.24.42295616.27.40.42
12-08-2022 07:0049.89166-6.313900.350.516.74.82866916.17.50.45
12-08-2022 06:3049.89137-6.313620.420.689.152505816.57.60.66
12-08-2022 06:0049.89147-6.313410.430.648.34.82485316.27.40.67
12-08-2022 05:3049.89141-6.312500.420.5516.74.51942616.27.80.67
12-08-2022 05:0049.89172-6.313280.450.6216.74.52002415.470.7
12-08-2022 04:3049.89238-6.311600.470.73104.33234916.56.50.7
12-08-2022 04:0049.89257-6.311580.530.759.14.43253417.36.60.91
12-08-2022 03:3049.89267-6.311580.510.799.14.63283917.86.90.88
12-08-2022 03:0049.89279-6.311620.530.7610.54.73254617.77.20.99
12-08-2022 02:3049.89283-6.311710.510.95104.53384017.76.60.84
12-08-2022 02:0049.89285-6.311750.480.88104.233236176.40.73
12-08-2022 01:3049.89284-6.311770.490.744.23.8844217.35.60.67
12-08-2022 01:0049.89279-6.311670.570.934.23.61042814.55.10.82
12-08-2022 00:3049.89281-6.311710.580.8543.6932814.74.70.77
12-08-2022 00:0049.89286-6.311860.620.894.43.51072314.84.60.87