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 9 hours 3 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12-01-2025 00:00 | 49.89273 | -6.31152 | 1.02 | - | 7.4 | 5.8 | 221 | 67 | 11.3 | - | - |
| 11-01-2025 23:30 | 49.89275 | -6.31160 | 0.99 | - | 10.5 | 5.6 | 253 | 57 | 11.3 | - | - |
| 11-01-2025 23:00 | 49.89278 | -6.31171 | 1.02 | - | 8 | 5.7 | 219 | 45 | 11.3 | - | - |
| 11-01-2025 22:30 | 49.89280 | -6.31184 | 0.92 | - | 6.9 | 5.5 | 225 | 49 | 11.3 | - | - |
| 11-01-2025 22:00 | 49.89288 | -6.31203 | 1.04 | - | 9.1 | 6 | 219 | 41 | 11.3 | - | - |
| 11-01-2025 21:30 | 49.89292 | -6.31250 | 0.94 | - | 11.8 | 5.6 | 204 | 53 | 11.3 | - | - |
| 11-01-2025 21:00 | 49.89273 | -6.31347 | 0.99 | - | 10.5 | 5.9 | 273 | 53 | 11.3 | - | - |
| 11-01-2025 20:30 | 49.89227 | -6.31392 | 1.07 | - | 10.5 | 6.1 | 232 | 53 | 11.3 | - | - |
| 11-01-2025 20:00 | 49.89198 | -6.31396 | 1.3 | - | 11.8 | 6.9 | 226 | 53 | 11.3 | - | - |
| 11-01-2025 19:30 | 49.89181 | -6.31394 | 1.36 | - | 10.5 | 7.2 | 229 | 45 | 11.3 | - | - |
| 11-01-2025 19:00 | 49.89175 | -6.31392 | 1.49 | - | 11.8 | 7.3 | 239 | 58 | 11.3 | - | - |
| 11-01-2025 18:30 | 49.89159 | -6.31386 | 1.49 | - | 9.5 | 7 | 221 | 28 | 11.3 | - | - |
| 11-01-2025 18:00 | 49.89173 | -6.31394 | 1.39 | - | 9.5 | 7 | 222 | 28 | 11.3 | - | - |
| 11-01-2025 17:30 | 49.89167 | -6.31390 | 1.56 | - | 8.7 | 7 | 252 | 28 | 11.2 | - | - |
| 11-01-2025 17:00 | 49.89137 | -6.31341 | 1.53 | - | 9.5 | 6.8 | 230 | 34 | 11.2 | - | - |
| 11-01-2025 16:30 | 49.89144 | -6.31336 | 1.36 | - | 13.3 | 6.8 | 254 | 57 | 11.2 | - | - |
| 11-01-2025 16:00 | 49.89135 | -6.31225 | 1.24 | - | 11.8 | 6.3 | 252 | 53 | 11.2 | - | - |
| 11-01-2025 15:30 | 49.89180 | -6.31160 | 1.15 | - | 10.5 | 6.1 | 222 | 62 | 11.2 | - | - |
| 11-01-2025 15:00 | 49.89261 | -6.31162 | 1.21 | - | 11.8 | 5.9 | 257 | 62 | 11.4 | - | - |
| 11-01-2025 14:30 | 49.89264 | -6.31158 | 1.21 | - | 13.3 | 5.9 | 245 | 67 | 11.4 | - | - |
| 11-01-2025 14:00 | 49.89262 | -6.31156 | 1.27 | - | 10 | 5.7 | 236 | 67 | 11.4 | - | - |
| 11-01-2025 13:30 | 49.89263 | -6.31156 | 1.24 | - | 7.7 | 5.8 | 211 | 62 | 11.4 | - | - |
| 11-01-2025 13:00 | 49.89264 | -6.31152 | 1.3 | - | 10.5 | 5.7 | 262 | 53 | 11.4 | - | - |
| 11-01-2025 12:30 | 49.89265 | -6.31156 | 1.3 | - | 7.7 | 5.8 | 218 | 58 | 11.4 | - | - |
| 11-01-2025 12:00 | 49.89273 | -6.31160 | 1.27 | - | 8.3 | 5.7 | 221 | 41 | 11.4 | - | - |
| 11-01-2025 11:30 | 49.89274 | -6.31169 | 1.27 | - | 7.7 | 5.7 | 219 | 53 | 11.4 | - | - |
| 11-01-2025 11:00 | 49.89279 | -6.31173 | 1.21 | - | 10 | 5.5 | 225 | 53 | 11.4 | - | - |
| 11-01-2025 10:30 | 49.89281 | -6.31182 | 1.3 | - | 8.3 | 5.5 | 229 | 41 | 11.3 | - | - |
| 11-01-2025 10:00 | 49.89283 | -6.31186 | 1.3 | - | 9.5 | 5.4 | 215 | 38 | 11.3 | - | - |
| 11-01-2025 09:30 | 49.89292 | -6.31218 | 1.3 | - | 8.7 | 5.4 | 233 | 34 | 11.3 | - | - |
| 11-01-2025 09:00 | 49.89280 | -6.31328 | 1.39 | - | 7.4 | 5.7 | 217 | 49 | 11.3 | - | - |
| 11-01-2025 08:30 | 49.89226 | -6.31396 | 1.56 | - | 9.5 | 6.2 | 222 | 28 | 11.3 | - | - |
| 11-01-2025 08:00 | 49.89195 | -6.31398 | 1.53 | - | 7.4 | 6 | 215 | 41 | 11.3 | - | - |
| 11-01-2025 07:30 | 49.89180 | -6.31394 | 1.6 | - | 8.7 | 6.1 | 229 | 28 | 11.3 | - | - |
| 11-01-2025 07:00 | 49.89175 | -6.31394 | 1.74 | - | 8.7 | 6.5 | 212 | 23 | 11.3 | - | - |
| 11-01-2025 06:30 | 49.89174 | -6.31394 | 1.74 | - | 9.1 | 6.4 | 231 | 28 | 11.3 | - | - |
| 11-01-2025 06:00 | 49.89166 | -6.31396 | 1.82 | - | 10.5 | 6.5 | 245 | 46 | 11.3 | - | - |
| 11-01-2025 05:30 | 49.89170 | -6.31394 | 1.82 | - | 8.7 | 6.3 | 210 | 41 | 11.2 | - | - |
| 11-01-2025 05:00 | 49.89152 | -6.31371 | 1.9 | - | 8.3 | 6.4 | 235 | 34 | 11.2 | - | - |
| 11-01-2025 04:30 | 49.89128 | -6.31291 | 1.9 | - | 8.7 | 6 | 205 | 34 | 11.2 | - | - |
| 11-01-2025 04:00 | 49.89133 | -6.31287 | 1.86 | - | 8.7 | 6 | 205 | 28 | 11.2 | - | - |
| 11-01-2025 03:30 | 49.89136 | -6.31220 | 1.86 | - | 10 | 5.7 | 210 | 38 | 11.2 | - | - |
| 11-01-2025 03:00 | 49.89186 | -6.31150 | 1.9 | - | 6.1 | 5.7 | 124 | 38 | 11.2 | - | - |
| 11-01-2025 02:30 | 49.89270 | -6.31173 | 1.74 | - | 9.1 | 5.3 | 232 | 41 | 11.4 | - | - |
| 11-01-2025 02:00 | 49.89266 | -6.31162 | 1.74 | - | 9.5 | 5.2 | 207 | 41 | 11.4 | - | - |
| 11-01-2025 01:30 | 49.89273 | -6.31162 | 1.9 | - | 6.1 | 5.2 | 120 | 53 | 11.4 | - | - |
| 11-01-2025 01:00 | 49.89276 | -6.31169 | 1.9 | - | 8.7 | 5.4 | 204 | 38 | 11.4 | - | - |
| 11-01-2025 00:30 | 49.89266 | -6.31156 | 1.86 | - | 8 | 5.3 | 211 | 38 | 11.3 | - | - |
| 11-01-2025 00:00 | 49.89270 | -6.31160 | 1.94 | - | 9.1 | 5.2 | 211 | 38 | 11.3 | - | - |
