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)
26-11-2022 14:0049.89298-6.312053.837.128.36.32012412.87.453.5
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)
26-11-2022 14:0049.89298-6.312053.837.128.36.32012412.87.453.5
26-11-2022 13:3049.89304-6.312353.815.528.36.62013012.87.654
26-11-2022 13:0049.89309-6.312743.945.848.36.32012612.87.355.93
26-11-2022 12:3049.89300-6.313213.035.277.75.81863612.8731.53
26-11-2022 12:0049.89287-6.313512.744.427.15.61873112.86.825.12
26-11-2022 11:3049.89287-6.313512.833.987.75.71913012.86.927.07
26-11-2022 11:0049.89264-6.313862.74.038.35.72032812.8725.06
26-11-2022 10:3049.89233-6.314012.633.757.75.81983012.87.124.18
26-11-2022 10:0049.89204-6.314052.594.267.75.91983812.87.223.61
26-11-2022 09:3049.89180-6.314072.714.47.15.91873312.87.125.63
26-11-2022 09:0049.89163-6.314112.64.317.15.62043512.86.822.49
26-11-2022 08:3049.89189-6.313982.483.697.75.82113412.87.121.41
26-11-2022 08:0049.89148-6.313832.744.347.75.92113112.8725.79
26-11-2022 07:3049.89135-6.313212.484.276.75.61912912.87.121.45
26-11-2022 07:0049.89143-6.313192.313.66.75.41883312.8718.35
26-11-2022 06:3049.89151-6.311992.194.195.95.11813512.86.615.64
26-11-2022 06:0049.89286-6.312352.022.916.34.91834012.86.212.46
26-11-2022 05:3049.89278-6.311801.863.1954.71762712.86.210.45
26-11-2022 05:0049.89272-6.311541.8635.34.71773412.8610.22
26-11-2022 04:3049.89280-6.311751.822.535.64.61944812.96.210.06
26-11-2022 04:0049.89279-6.311691.82.635.64.52005012.969.6
26-11-2022 03:3049.89281-6.311621.812.574.84.51833912.969.69
26-11-2022 03:0049.89284-6.311651.712.535.64.42004412.968.62
26-11-2022 02:3049.89283-6.311601.662.815.94.42074612.95.97.99
26-11-2022 02:0049.89285-6.311731.582.285.64.31974712.85.97.24
26-11-2022 01:3049.89290-6.311821.462.135.34.41874112.966.32
26-11-2022 01:0049.89292-6.311951.381.868.34.41904812.86.15.7
26-11-2022 00:3049.89298-6.312161.3327.14.41914712.86.55.61
26-11-2022 00:0049.89303-6.312461.291.967.14.61795012.86.65.38
25-11-2022 23:3049.89298-6.313131.31.73104.81944612.86.95.69
25-11-2022 23:0049.89271-6.313681.442.046.75.12034612.97.47.52
25-11-2022 22:3049.89227-6.313981.522.42105.52214512.97.98.94
25-11-2022 22:0049.89201-6.314011.662.8611.15.92353912.98.411.41
25-11-2022 21:3049.89182-6.313981.872.6911.86.22575212.98.314.32
25-11-2022 21:0049.89169-6.313921.862.7910.56.52254112.88.414.27
25-11-2022 20:3049.89158-6.314051.723.2811.16.32084612.88.412.21
25-11-2022 20:0049.89171-6.313791.893.1310.56.62383512.88.915.57
25-11-2022 19:3049.89138-6.313642.263.459.16.92243312.88.822.14
25-11-2022 19:0049.89139-6.313172.112.8910.56.62354112.88.919.5
25-11-2022 18:3049.89135-6.313001.882.7211.86.22904812.88.715.05
25-11-2022 18:0049.89137-6.312201.692.8412.562946912.88.511.88
25-11-2022 17:3049.89168-6.311651.572.147.75.32116312.87.79.3
25-11-2022 17:0049.89259-6.311541.492.387.75.41977012.97.68.32
25-11-2022 16:3049.89267-6.311541.542.57.75.42316412.97.89.11
25-11-2022 16:0049.89275-6.311601.62.67.15.22716712.97.39.19
25-11-2022 15:3049.89277-6.311501.562.267.75.32196912.97.48.88
25-11-2022 15:0049.89280-6.311471.572.5914.35.32607512.97.79.34
25-11-2022 14:3049.89280-6.311471.572.317.15.32355912.97.38.78
25-11-2022 14:0049.89281-6.311671.62.195.95.32255112.97.49.24