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
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 25-04-2025 02:00 | 49.89247 | -6.31160 | 0.89 | - | 9.5 | 3.8 | 302 | 49 | 11.8 | - | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 25-04-2025 02:00 | 49.89247 | -6.31160 | 0.89 | - | 9.5 | 3.8 | 302 | 49 | 11.8 | - | - |
| 25-04-2025 01:30 | 49.89251 | -6.31162 | 0.94 | - | 10.5 | 4 | 319 | 73 | 11.8 | - | - |
| 25-04-2025 01:00 | 49.89255 | -6.31165 | 0.89 | - | 11.1 | 4 | 319 | 63 | 11.8 | - | - |
| 25-04-2025 00:30 | 49.89251 | -6.31156 | 0.94 | - | 11.8 | 3.9 | 204 | 62 | 11.8 | - | - |
| 25-04-2025 00:00 | 49.89259 | -6.31165 | 0.92 | - | 3.5 | 3.9 | 163 | 28 | 11.9 | - | - |
| 24-04-2025 23:30 | 49.89265 | -6.31175 | 0.89 | - | 3.6 | 3.6 | 148 | 34 | 11.9 | - | - |
| 24-04-2025 23:00 | 49.89269 | -6.31182 | 0.89 | - | 3.8 | 3.5 | 141 | 28 | 11.8 | - | - |
| 24-04-2025 22:30 | 49.89279 | -6.31201 | 0.92 | - | 3.6 | 3.4 | 132 | 34 | 11.8 | - | - |
| 24-04-2025 22:00 | 49.89286 | -6.31227 | 0.92 | - | 3.3 | 3.5 | 152 | 23 | 11.8 | - | - |
| 24-04-2025 21:30 | 49.89286 | -6.31315 | 0.84 | - | 3.4 | 3.4 | 180 | 28 | 11.9 | - | - |
| 24-04-2025 21:00 | 49.89252 | -6.31388 | 0.8 | - | 3.4 | 3.4 | 176 | 28 | 11.9 | - | - |
| 24-04-2025 20:30 | 49.89221 | -6.31403 | 0.82 | - | 11.1 | 3.6 | 329 | 60 | 12 | - | - |
| 24-04-2025 20:00 | 49.89195 | -6.31405 | 0.82 | - | 3.6 | 3.6 | 180 | 28 | 12 | - | - |
| 24-04-2025 19:30 | 49.89210 | -6.31407 | 0.8 | - | 11.1 | 3.6 | 250 | 62 | 12 | - | - |
| 24-04-2025 19:00 | 49.89206 | -6.31407 | 0.84 | - | 10.5 | 4 | 288 | 62 | 12 | - | - |
| 24-04-2025 18:30 | 49.89182 | -6.31405 | 0.82 | - | 8 | 4.1 | 219 | 49 | 12 | - | - |
| 24-04-2025 18:00 | 49.89165 | -6.31401 | 0.82 | - | 11.8 | 4.1 | 335 | 58 | 12 | - | - |
| 24-04-2025 17:30 | 49.89153 | -6.31398 | 0.8 | - | 11.1 | 4.3 | 301 | 53 | 12 | - | - |
| 24-04-2025 17:00 | 49.89167 | -6.31403 | 0.78 | - | 8.3 | 4.4 | 278 | 49 | 12 | - | - |
| 24-04-2025 16:30 | 49.89141 | -6.31373 | 0.82 | - | 10.5 | 4.7 | 263 | 58 | 12 | - | - |
| 24-04-2025 16:00 | 49.89152 | -6.31379 | 0.82 | - | 8.7 | 4.4 | 259 | 49 | 11.9 | - | - |
| 24-04-2025 15:30 | 49.89131 | -6.31341 | 0.78 | - | 8 | 4.1 | 240 | 57 | 12 | - | - |
| 24-04-2025 15:00 | 49.89134 | -6.31208 | 0.75 | - | 10.5 | 4.1 | 297 | 67 | 12 | - | - |
| 24-04-2025 14:30 | 49.89226 | -6.31171 | 0.73 | - | 9.5 | 3.9 | 347 | 67 | 12 | - | - |
| 24-04-2025 14:00 | 49.89240 | -6.31162 | 0.75 | - | 8.7 | 4.1 | 328 | 41 | 12 | - | - |
| 24-04-2025 13:30 | 49.89248 | -6.31160 | 0.8 | - | 10 | 4.2 | 277 | 73 | 12 | - | - |
| 24-04-2025 13:00 | 49.89256 | -6.31165 | 0.78 | - | 8 | 4 | 308 | 62 | 12.2 | - | - |
| 24-04-2025 12:30 | 49.89261 | -6.31173 | 0.73 | - | 8.3 | 3.9 | 146 | 67 | 12.1 | - | - |
| 24-04-2025 12:00 | 49.89265 | -6.31177 | 0.78 | - | 10.5 | 4.1 | 287 | 73 | 12 | - | - |
| 24-04-2025 11:30 | 49.89271 | -6.31186 | 0.8 | - | 9.5 | 4.3 | 310 | 57 | 12.1 | - | - |
| 24-04-2025 11:00 | 49.89274 | -6.31197 | 0.73 | - | 5.9 | 3.9 | 218 | 49 | 12 | - | - |
| 24-04-2025 10:30 | 49.89274 | -6.31190 | 0.71 | - | 5 | 4.2 | 210 | 46 | 11.9 | - | - |
| 24-04-2025 10:00 | 49.89284 | -6.31218 | 0.71 | - | 5.4 | 4.5 | 201 | 41 | 11.9 | - | - |
| 24-04-2025 09:30 | 49.89292 | -6.31302 | 0.73 | - | 6.9 | 4.7 | 218 | 41 | 11.8 | - | - |
| 24-04-2025 09:00 | 49.89241 | -6.31394 | 0.73 | - | 6.9 | 5 | 224 | 49 | 11.8 | - | - |
| 24-04-2025 08:30 | 49.89200 | -6.31407 | 0.69 | - | 6.1 | 5 | 210 | 45 | 11.8 | - | - |
| 24-04-2025 08:00 | 49.89173 | -6.31403 | 0.71 | - | 5.6 | 5 | 217 | 49 | 11.8 | - | - |
| 24-04-2025 07:30 | 49.89168 | -6.31403 | 0.71 | - | 6.7 | 5.3 | 236 | 49 | 11.9 | - | - |
| 24-04-2025 07:00 | 49.89168 | -6.31403 | 0.73 | - | 10.5 | 5.5 | 304 | 62 | 11.9 | - | - |
| 24-04-2025 06:30 | 49.89172 | -6.31403 | 0.69 | - | 11.8 | 5.4 | 323 | 68 | 11.9 | - | - |
| 24-04-2025 06:00 | 49.89163 | -6.31398 | 0.84 | - | 6.9 | 5.7 | 207 | 28 | 11.9 | - | - |
| 24-04-2025 05:30 | 49.89156 | -6.31398 | 0.78 | - | 11.8 | 5.7 | 333 | 62 | 11.9 | - | - |
| 24-04-2025 05:00 | 49.89155 | -6.31396 | 0.82 | - | 8.7 | 6 | 257 | 57 | 11.8 | - | - |
| 24-04-2025 04:30 | 49.89152 | -6.31394 | 0.84 | - | 11.8 | 5.6 | 332 | 62 | 11.9 | - | - |
| 24-04-2025 04:00 | 49.89143 | -6.31379 | 0.82 | - | 10.5 | 5.7 | 300 | 67 | 11.9 | - | - |
| 24-04-2025 03:30 | 49.89143 | -6.31362 | 0.87 | - | 5.7 | 5.5 | 228 | 41 | 11.8 | - | - |
| 24-04-2025 03:00 | 49.89145 | -6.31371 | 0.89 | - | 11.8 | 5.6 | 325 | 62 | 11.9 | - | - |
| 24-04-2025 02:30 | 49.89129 | -6.31225 | 0.87 | - | 11.1 | 5.6 | 300 | 58 | 11.8 | - | - |
| 24-04-2025 02:00 | 49.89145 | -6.31225 | 0.84 | - | 8.7 | 5.4 | 315 | 78 | 11.8 | - | - |
