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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18-07-2025 19:00 | 49.89266 | -6.31173 | 0.59 | - | 7.7 | 4.7 | 262 | 67 | 16.2 | - | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18-07-2025 19:00 | 49.89266 | -6.31173 | 0.59 | - | 7.7 | 4.7 | 262 | 67 | 16.2 | - | - |
| 18-07-2025 18:30 | 49.89264 | -6.31171 | 0.49 | - | 8 | 4.4 | 243 | 57 | 16.1 | - | - |
| 18-07-2025 18:00 | 49.89260 | -6.31169 | 0.48 | - | 8.3 | 4.3 | 212 | 67 | 15.4 | - | - |
| 18-07-2025 17:30 | 49.89264 | -6.31182 | 0.49 | - | 6.9 | 4.4 | 239 | 49 | 16.2 | - | - |
| 18-07-2025 17:00 | 49.89276 | -6.31216 | 0.51 | - | 5.3 | 4.5 | 236 | 67 | 16.4 | - | - |
| 18-07-2025 16:30 | 49.89279 | -6.31268 | 0.53 | - | 8 | 4.8 | 232 | 67 | 16.4 | - | - |
| 18-07-2025 16:00 | 49.89255 | -6.31364 | 0.67 | - | 7.4 | 5.4 | 232 | 57 | 16.5 | - | - |
| 18-07-2025 15:30 | 49.89216 | -6.31405 | 0.78 | - | 8 | 5.6 | 263 | 49 | 16.5 | - | - |
| 18-07-2025 15:00 | 49.89189 | -6.31407 | 0.89 | - | 8 | 5.6 | 232 | 49 | 16.4 | - | - |
| 18-07-2025 14:30 | 49.89171 | -6.31403 | 0.97 | - | 8.3 | 6 | 252 | 41 | 16.6 | - | - |
| 18-07-2025 14:00 | 49.89159 | -6.31401 | 0.82 | - | 8.3 | 5.4 | 238 | 57 | 16.8 | - | - |
| 18-07-2025 13:30 | 49.89151 | -6.31396 | 0.92 | - | 8.7 | 6 | 235 | 34 | 15.8 | - | - |
| 18-07-2025 13:00 | 49.89166 | -6.31401 | 0.84 | - | 8 | 5.8 | 226 | 41 | 15.4 | - | - |
| 18-07-2025 12:30 | 49.89146 | -6.31381 | 0.94 | - | 8.3 | 6 | 244 | 34 | 15.8 | - | - |
| 18-07-2025 12:00 | 49.89127 | -6.31330 | 0.94 | - | 8.7 | 6 | 246 | 28 | 15.6 | - | - |
| 18-07-2025 11:30 | 49.89145 | -6.31366 | 0.89 | - | 7.7 | 5.7 | 229 | 38 | 15.8 | - | - |
| 18-07-2025 11:00 | 49.89122 | -6.31270 | 0.73 | - | 7.7 | 5.4 | 224 | 38 | 15.6 | - | - |
| 18-07-2025 10:30 | 49.89162 | -6.31233 | 0.65 | - | 8 | 5.2 | 243 | 57 | 15.7 | - | - |
| 18-07-2025 10:00 | 49.89207 | -6.31156 | 0.67 | - | 8 | 5.1 | 255 | 67 | 15.8 | - | - |
| 18-07-2025 09:30 | 49.89233 | -6.31154 | 0.69 | - | 8 | 5 | 236 | 53 | 16 | - | - |
| 18-07-2025 09:00 | 49.89253 | -6.31167 | 0.69 | - | 8.7 | 4.7 | 277 | 57 | 16.4 | - | - |
| 18-07-2025 08:30 | 49.89255 | -6.31169 | 0.65 | - | 8.7 | 4.7 | 292 | 49 | 16.4 | - | - |
| 18-07-2025 08:00 | 49.89260 | -6.31173 | 0.71 | - | 8.3 | 4.7 | 263 | 49 | 16.6 | - | - |
| 18-07-2025 07:30 | 49.89260 | -6.31175 | 0.73 | - | 8 | 4.6 | 245 | 45 | 16.6 | - | - |
| 18-07-2025 07:00 | 49.89267 | -6.31188 | 0.69 | - | 8.3 | 4.6 | 249 | 49 | 17 | - | - |
| 18-07-2025 06:30 | 49.89274 | -6.31199 | 0.67 | - | 7.4 | 4.4 | 273 | 62 | 17 | - | - |
| 18-07-2025 06:00 | 49.89276 | -6.31201 | 0.61 | - | 6.7 | 4.4 | 249 | 41 | 16.8 | - | - |
| 18-07-2025 05:30 | 49.89269 | -6.31188 | 0.53 | - | 8.3 | 4.3 | 211 | 57 | 15.3 | - | - |
| 18-07-2025 05:00 | 49.89271 | -6.31197 | 0.51 | - | 6.1 | 4.3 | 169 | 57 | 15.1 | - | - |
| 18-07-2025 04:30 | 49.89282 | -6.31283 | 0.55 | - | 8.7 | 4.3 | 214 | 57 | 15.2 | - | - |
| 18-07-2025 04:00 | 49.89249 | -6.31360 | 0.61 | - | 8.7 | 4.8 | 227 | 57 | 15.4 | - | - |
| 18-07-2025 03:30 | 49.89205 | -6.31398 | 0.75 | - | 8.7 | 5.3 | 245 | 23 | 15.4 | - | - |
| 18-07-2025 03:00 | 49.89178 | -6.31405 | 0.87 | - | 8 | 5.4 | 235 | 41 | 15.5 | - | - |
| 18-07-2025 02:30 | 49.89170 | -6.31403 | 0.94 | - | 7.7 | 5.5 | 236 | 28 | 15.5 | - | - |
| 18-07-2025 02:00 | 49.89162 | -6.31401 | 1.02 | - | 8 | 5.7 | 235 | 41 | 15.5 | - | - |
| 18-07-2025 01:30 | 49.89160 | -6.31403 | 1.02 | - | 8 | 5.6 | 231 | 41 | 15.5 | - | - |
| 18-07-2025 01:00 | 49.89152 | -6.31401 | 1.02 | - | 9.1 | 5.6 | 229 | 41 | 15.5 | - | - |
| 18-07-2025 00:30 | 49.89150 | -6.31401 | 0.99 | - | 8.7 | 5.4 | 264 | 41 | 15.2 | - | - |
| 18-07-2025 00:00 | 49.89150 | -6.31394 | 0.99 | - | 8.7 | 5.3 | 250 | 41 | 15.2 | - | - |
| 17-07-2025 23:30 | 49.89123 | -6.31326 | 1.15 | - | 9.1 | 5.7 | 255 | 34 | 15.4 | - | - |
| 17-07-2025 23:00 | 49.89142 | -6.31356 | 1.04 | - | 9.1 | 5.2 | 255 | 41 | 15.4 | - | - |
| 17-07-2025 22:30 | 49.89121 | -6.31278 | 0.89 | - | 8.7 | 4.7 | 232 | 49 | 15.5 | - | - |
| 17-07-2025 22:00 | 49.89130 | -6.31216 | 0.84 | - | 8.7 | 4.5 | 248 | 57 | 15.4 | - | - |
| 17-07-2025 21:30 | 49.89212 | -6.31160 | 0.82 | - | 8.7 | 4.3 | 269 | 49 | 15.6 | - | - |
| 17-07-2025 21:00 | 49.89235 | -6.31152 | 0.84 | - | 8.3 | 4 | 250 | 57 | 15.6 | - | - |
| 17-07-2025 20:30 | 49.89254 | -6.31162 | 0.92 | - | 7.4 | 4.1 | 302 | 57 | 15.6 | - | - |
| 17-07-2025 20:00 | 49.89264 | -6.31167 | 0.89 | - | 8.7 | 4.1 | 264 | 49 | 15.8 | - | - |
| 17-07-2025 19:30 | 49.89270 | -6.31177 | 0.78 | - | 8 | 3.9 | 257 | 57 | 15.8 | - | - |
| 17-07-2025 19:00 | 49.89274 | -6.31180 | 0.78 | - | 8.7 | 4 | 276 | 49 | 16 | - | - |
