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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 13-07-2025 01:30 | 49.89285 | -6.31253 | 0.46 | - | 3.8 | 3 | 128 | 28 | 16.1 | - | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19-07-2024 00:00 | 49.89290 | -6.31195 | 0.67 | - | 7.1 | 4.4 | 236 | 49 | 15.4 | - | - |
| 18-07-2024 23:30 | 49.89296 | -6.31214 | 0.63 | - | 6.9 | 4.3 | 260 | 41 | 15.4 | - | - |
| 18-07-2024 23:00 | 49.89300 | -6.31248 | 0.65 | - | 6.2 | 4.3 | 226 | 28 | 15.6 | - | - |
| 18-07-2024 22:30 | 49.89303 | -6.31276 | 0.67 | - | 6.9 | 4.3 | 236 | 28 | 15.5 | - | - |
| 18-07-2024 22:00 | 49.89301 | -6.31285 | 0.61 | - | 7.1 | 4.5 | 236 | 34 | 14.6 | - | - |
| 18-07-2024 21:30 | 49.89264 | -6.31379 | 0.55 | - | 7.4 | 4.3 | 243 | 41 | 14.6 | - | - |
| 18-07-2024 21:00 | 49.89226 | -6.31398 | 0.63 | - | 7.4 | 4.8 | 236 | 34 | 14.6 | - | - |
| 18-07-2024 20:30 | 49.89197 | -6.31398 | 0.59 | - | 5.9 | 4.5 | 229 | 31 | 14.8 | - | - |
| 18-07-2024 20:00 | 49.89176 | -6.31390 | 0.53 | - | 7.7 | 4.3 | 295 | 57 | 14.7 | - | - |
| 18-07-2024 19:30 | 49.89174 | -6.31392 | 0.61 | - | 7.7 | 4.6 | 280 | 49 | 14.8 | - | - |
| 18-07-2024 19:00 | 49.89173 | -6.31396 | 0.65 | - | 6.7 | 4.8 | 236 | 28 | 15 | - | - |
| 18-07-2024 18:30 | 49.89177 | -6.31398 | 0.59 | - | 4.3 | 4.6 | 231 | 31 | 15.2 | - | - |
| 18-07-2024 18:00 | 49.89170 | -6.31396 | 0.63 | - | 8.7 | 4.7 | 291 | 49 | 14.6 | - | - |
| 18-07-2024 17:30 | 49.89173 | -6.31398 | 0.59 | - | 8.7 | 4.5 | 332 | 49 | 15 | - | - |
| 18-07-2024 17:00 | 49.89162 | -6.31383 | 0.63 | - | 8.7 | 4.6 | 291 | 49 | 15 | - | - |
| 18-07-2024 16:30 | 49.89128 | -6.31283 | 0.71 | - | 8.7 | 4.9 | 256 | 45 | 14.8 | - | - |
| 18-07-2024 16:00 | 49.89144 | -6.31323 | 0.69 | - | 6.9 | 4.6 | 264 | 34 | 14.8 | - | - |
| 18-07-2024 15:30 | 49.89135 | -6.31272 | 0.75 | - | 6.7 | 4.7 | 260 | 28 | 14.9 | - | - |
| 18-07-2024 15:00 | 49.89138 | -6.31223 | 0.59 | - | 7.1 | 4 | 243 | 57 | 14.8 | - | - |
| 18-07-2024 14:30 | 49.89161 | -6.31177 | 0.57 | - | 7.1 | 3.9 | 307 | 53 | 14.8 | - | - |
| 18-07-2024 14:00 | 49.89249 | -6.31165 | 0.59 | - | 5.7 | 4 | 219 | 45 | 14.8 | - | - |
| 18-07-2024 13:30 | 49.89248 | -6.31154 | 0.57 | - | 5.7 | 3.8 | 231 | 45 | 15.2 | - | - |
| 18-07-2024 13:00 | 49.89264 | -6.31158 | 0.59 | - | 6.2 | 3.7 | 291 | 49 | 15.5 | - | - |
| 18-07-2024 12:30 | 49.89267 | -6.31160 | 0.59 | - | 4.7 | 3.8 | 215 | 38 | 15.4 | - | - |
| 18-07-2024 12:00 | 49.89273 | -6.31169 | 0.61 | - | 5.1 | 3.7 | 226 | 41 | 15.4 | - | - |
| 18-07-2024 11:30 | 49.89288 | -6.31188 | 0.59 | - | 4.8 | 3.8 | 210 | 38 | 15.2 | - | - |
| 18-07-2024 11:00 | 49.89292 | -6.31195 | 0.57 | - | 4.9 | 3.8 | 219 | 45 | 15.2 | - | - |
| 18-07-2024 10:30 | 49.89303 | -6.31242 | 0.61 | - | 5.3 | 3.7 | 225 | 31 | 15.4 | - | - |
| 18-07-2024 10:00 | 49.89294 | -6.31343 | 0.65 | - | 4.5 | 3.8 | 226 | 28 | 15.2 | - | - |
| 18-07-2024 09:30 | 49.89256 | -6.31394 | 0.75 | - | 5.1 | 3.9 | 226 | 21 | 15.2 | - | - |
| 18-07-2024 09:00 | 49.89232 | -6.31407 | 0.71 | - | 4.8 | 3.7 | 226 | 23 | 15 | - | - |
| 18-07-2024 08:30 | 49.89211 | -6.31405 | 0.63 | - | 4.7 | 3.7 | 231 | 26 | 14.8 | - | - |
| 18-07-2024 08:00 | 49.89196 | -6.31401 | 0.67 | - | 4.9 | 3.8 | 229 | 21 | 14.8 | - | - |
| 18-07-2024 07:30 | 49.89183 | -6.31398 | 0.67 | - | 4.5 | 3.8 | 224 | 31 | 14.6 | - | - |
| 18-07-2024 07:00 | 49.89183 | -6.31398 | 0.71 | - | 4.8 | 3.8 | 226 | 29 | 14.8 | - | - |
| 18-07-2024 06:30 | 49.89181 | -6.31401 | 0.73 | - | 4.7 | 3.8 | 218 | 26 | 14.8 | - | - |
| 18-07-2024 06:00 | 49.89173 | -6.31398 | 0.73 | - | 4.8 | 3.9 | 233 | 28 | 14.8 | - | - |
| 18-07-2024 05:30 | 49.89170 | -6.31392 | 0.71 | - | 4.5 | 3.8 | 228 | 23 | 14.3 | - | - |
| 18-07-2024 05:00 | 49.89172 | -6.31396 | 0.69 | - | 5 | 3.8 | 221 | 23 | 14.6 | - | - |
| 18-07-2024 04:30 | 49.89158 | -6.31375 | 0.73 | - | 4.5 | 3.8 | 221 | 21 | 14.8 | - | - |
| 18-07-2024 04:00 | 49.89138 | -6.31332 | 0.73 | - | 4.3 | 3.6 | 212 | 23 | 14.6 | - | - |
| 18-07-2024 03:30 | 49.89142 | -6.31330 | 0.73 | - | 4.9 | 3.7 | 219 | 28 | 14.6 | - | - |
| 18-07-2024 03:00 | 49.89131 | -6.31261 | 0.75 | - | 3.6 | 3.5 | 177 | 28 | 14.6 | - | - |
| 18-07-2024 02:30 | 49.89144 | -6.31205 | 0.71 | - | 3.8 | 3.4 | 174 | 34 | 14.6 | - | - |
| 18-07-2024 02:00 | 49.89174 | -6.31169 | 0.69 | - | 3.8 | 3.4 | 208 | 28 | 14.6 | - | - |
| 18-07-2024 01:30 | 49.89226 | -6.31162 | 0.71 | - | 3.2 | 3.4 | 172 | 34 | 14.7 | - | - |
| 18-07-2024 01:00 | 49.89250 | -6.31167 | 0.63 | - | 3.6 | 3.3 | 195 | 34 | 14.9 | - | - |
| 18-07-2024 00:30 | 49.89253 | -6.31156 | 0.67 | - | 3.8 | 3.3 | 217 | 28 | 14.9 | - | - |
| 18-07-2024 00:00 | 49.89262 | -6.31156 | 0.63 | - | 3.8 | 3.4 | 201 | 34 | 15 | - | - |
