National Network of Regional Coastal Monitoring Programmes
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Note that these are real-time data and are not quality-controlled.
St Mary's Sound
Latest Waves Data (Data was last updated 3 hours 7 minutes ago)
| Time (GMT) | Latitude | Longitude | Wave 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 24-03-2025 10:30 | 49.89207 | -6.31160 | 0.71 | - | 6.9 | 4.5 | 325 | 49 | 11 | - | - |
| Date | Highest Hs 2025 | Storm Alert Threshold (0.25 yr Return Period Hs) |
Swell Alert Threshold (0.25 yr Return Period Te) |
|---|---|---|---|
| 27-01 | 5.4m | 4.43m | 10.90s |
| Time (GMT) | Latitude | Longitude | Wave 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 24-03-2025 10:30 | 49.89207 | -6.31160 | 0.71 | - | 6.9 | 4.5 | 325 | 49 | 11 | - | - |
| 24-03-2025 10:00 | 49.89192 | -6.31162 | 0.75 | - | 11.1 | 4.4 | 6 | 67 | 11 | - | - |
| 24-03-2025 09:30 | 49.89152 | -6.31195 | 0.78 | - | 10.5 | 4.6 | 302 | 67 | 11 | - | - |
| 24-03-2025 09:00 | 49.89126 | -6.31291 | 0.73 | - | 11.1 | 4.6 | 315 | 62 | 11 | - | - |
| 24-03-2025 08:30 | 49.89142 | -6.31353 | 0.73 | - | 9.1 | 4.7 | 271 | 57 | 11 | - | - |
| 24-03-2025 08:00 | 49.89150 | -6.31373 | 0.73 | - | 11.1 | 4.6 | 343 | 63 | 11 | - | - |
| 24-03-2025 07:30 | 49.89145 | -6.31373 | 0.65 | - | 11.8 | 4.3 | 302 | 67 | 11 | - | - |
| 24-03-2025 07:00 | 49.89148 | -6.31379 | 0.69 | - | 12.5 | 4.4 | 233 | 67 | 11 | - | - |
| 24-03-2025 06:30 | 49.89150 | -6.31377 | 0.69 | - | 10.5 | 4.3 | 311 | 68 | 11 | - | - |
| 24-03-2025 06:00 | 49.89147 | -6.31377 | 0.73 | - | 11.8 | 4.3 | 315 | 73 | 11 | - | - |
| 24-03-2025 05:30 | 49.89149 | -6.31377 | 0.71 | - | 11.8 | 4.2 | 335 | 62 | 11 | - | - |
| 24-03-2025 05:00 | 49.89151 | -6.31379 | 0.71 | - | 11.1 | 4 | 328 | 57 | 11 | - | - |
| 24-03-2025 04:30 | 49.89143 | -6.31368 | 0.71 | - | 11.1 | 4.1 | 314 | 68 | 11 | - | - |
| 24-03-2025 04:00 | 49.89144 | -6.31364 | 0.71 | - | 11.1 | 3.9 | 326 | 73 | 11 | - | - |
| 24-03-2025 03:30 | 49.89147 | -6.31371 | 0.73 | - | 11.1 | 3.8 | 311 | 67 | 11.1 | - | - |
| 24-03-2025 03:00 | 49.89145 | -6.31368 | 0.75 | - | 10.5 | 3.6 | 255 | 67 | 11.1 | - | - |
| 24-03-2025 02:30 | 49.89135 | -6.31351 | 0.78 | - | 8.7 | 3.9 | 343 | 67 | 11.1 | - | - |
| 24-03-2025 02:00 | 49.89122 | -6.31313 | 0.78 | - | 11.1 | 3.9 | 325 | 53 | 11.1 | - | - |
| 24-03-2025 01:30 | 49.89121 | -6.31293 | 0.84 | - | 11.1 | 4 | 311 | 57 | 11 | - | - |
| 24-03-2025 01:00 | 49.89120 | -6.31287 | 0.84 | - | 10.5 | 4 | 270 | 57 | 11 | - | - |
| 24-03-2025 00:30 | 49.89120 | -6.31274 | 0.82 | - | 11.1 | 4 | 307 | 67 | 11 | - | - |
| 24-03-2025 00:00 | 49.89120 | -6.31248 | 0.92 | - | 12.5 | 4.1 | 257 | 67 | 11.1 | - | - |
| 23-03-2025 23:30 | 49.89145 | -6.31182 | 0.94 | - | 12.5 | 4.1 | 158 | 67 | 11.1 | - | - |
| 23-03-2025 23:00 | 49.89200 | -6.31154 | 0.97 | - | 6.9 | 4 | 347 | 57 | 11 | - | - |
| 23-03-2025 22:30 | 49.89237 | -6.31158 | 1.02 | - | 6.7 | 4.1 | 332 | 57 | 11.1 | - | - |
| 23-03-2025 22:00 | 49.89236 | -6.31156 | 0.97 | - | 6.9 | 4 | 7 | 49 | 11.1 | - | - |
| 23-03-2025 21:30 | 49.89241 | -6.31158 | 0.99 | - | 9.5 | 4.2 | 337 | 57 | 11.1 | - | - |
| 23-03-2025 21:00 | 49.89244 | -6.31160 | 0.97 | - | 8.3 | 4.1 | 322 | 67 | 11.1 | - | - |
| 23-03-2025 20:30 | 49.89238 | -6.31154 | 0.99 | - | 10 | 4.1 | 340 | 62 | 11.1 | - | - |
| 23-03-2025 20:00 | 49.89262 | -6.31186 | 0.97 | - | 6.5 | 4.3 | 32 | 67 | 11.1 | - | - |
| 23-03-2025 19:30 | 49.89256 | -6.31177 | 0.92 | - | 8.7 | 4.2 | 340 | 49 | 11.1 | - | - |
| 23-03-2025 19:00 | 49.89248 | -6.31171 | 0.94 | - | 10 | 4.1 | 314 | 68 | 11.1 | - | - |
| 23-03-2025 18:30 | 49.89229 | -6.31165 | 0.97 | - | 11.1 | 4.3 | 277 | 63 | 11.1 | - | - |
| 23-03-2025 18:00 | 49.89161 | -6.31229 | 0.94 | - | 10 | 4.2 | 338 | 53 | 11.1 | - | - |
| 23-03-2025 17:30 | 49.89141 | -6.31308 | 0.97 | - | 12.5 | 4.3 | 172 | 57 | 11.1 | - | - |
| 23-03-2025 17:00 | 49.89133 | -6.31336 | 0.92 | - | 10.5 | 4.3 | 302 | 62 | 11.2 | - | - |
| 23-03-2025 16:30 | 49.89135 | -6.31343 | 0.94 | - | 11.8 | 4.3 | 312 | 62 | 11.2 | - | - |
| 23-03-2025 16:00 | 49.89139 | -6.31356 | 0.89 | - | 8.7 | 4.3 | 343 | 67 | 11.1 | - | - |
| 23-03-2025 15:30 | 49.89149 | -6.31368 | 0.89 | - | 8.7 | 4.3 | 330 | 67 | 11.2 | - | - |
| 23-03-2025 15:00 | 49.89161 | -6.31381 | 0.97 | - | 8.3 | 4.2 | 307 | 57 | 11.2 | - | - |
| 23-03-2025 14:30 | 49.89170 | -6.31388 | 0.92 | - | 7.7 | 4.1 | 117 | 62 | 11.2 | - | - |
| 23-03-2025 14:00 | 49.89166 | -6.31383 | 0.97 | - | 12.5 | 4.1 | 302 | 67 | 11.2 | - | - |
| 23-03-2025 13:30 | 49.89166 | -6.31386 | 0.99 | - | 11.8 | 4 | 218 | 68 | 11.2 | - | - |
| 23-03-2025 13:00 | 49.89164 | -6.31377 | 0.97 | - | 10.5 | 4.1 | 312 | 62 | 11.1 | - | - |
| 23-03-2025 12:30 | 49.89230 | -6.31250 | 1.07 | - | 8 | 4.1 | 17 | 67 | 11.1 | - | - |
| 23-03-2025 12:00 | 49.89225 | -6.31165 | 1.12 | - | 9.5 | 4.1 | 357 | 49 | 11.1 | - | - |
| 23-03-2025 11:30 | 49.89226 | -6.31160 | 1.04 | - | 9.5 | 4.1 | 326 | 67 | 11 | - | - |
| 23-03-2025 11:00 | 49.89239 | -6.31160 | 1.12 | - | 8.7 | 4.1 | 27 | 57 | 11.2 | - | - |
| 23-03-2025 10:30 | 49.89246 | -6.31169 | 1.1 | - | 9.5 | 4.2 | 347 | 49 | 11.1 | - | - |
| 23-03-2025 10:00 | 49.89252 | -6.31169 | 1.15 | - | 8.7 | 4.3 | 38 | 57 | 11.2 | - | - |
