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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21-04-2025 17:30 | 49.89219 | -6.31383 | 0.75 | - | 8 | 4.6 | 285 | 53 | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11-01-2025 00:00 | 49.89270 | -6.31160 | 1.94 | - | 9.1 | 5.2 | 211 | 38 | 11.3 | - | - |
| 10-01-2025 23:30 | 49.89279 | -6.31169 | 1.86 | - | 6.7 | 5.2 | 133 | 49 | 11.3 | - | - |
| 10-01-2025 23:00 | 49.89285 | -6.31180 | 1.82 | - | 9.5 | 5.2 | 231 | 34 | 11.3 | - | - |
| 10-01-2025 22:30 | 49.89289 | -6.31190 | 1.9 | - | 9.5 | 5.2 | 226 | 34 | 11.3 | - | - |
| 10-01-2025 22:00 | 49.89298 | -6.31216 | 1.86 | - | 9.1 | 5.1 | 226 | 34 | 11.2 | - | - |
| 10-01-2025 21:30 | 49.89303 | -6.31246 | 1.86 | - | 9.5 | 5.2 | 221 | 28 | 11.2 | - | - |
| 10-01-2025 21:00 | 49.89300 | -6.31302 | 1.82 | - | 10 | 5 | 215 | 49 | 11.2 | - | - |
| 10-01-2025 20:30 | 49.89269 | -6.31377 | 2.06 | - | 10 | 5.4 | 210 | 35 | 11.2 | - | - |
| 10-01-2025 20:00 | 49.89232 | -6.31401 | 1.98 | - | 6.9 | 5.2 | 163 | 41 | 11.2 | - | - |
| 10-01-2025 19:30 | 49.89205 | -6.31403 | 2.06 | - | 9.1 | 5.5 | 205 | 28 | 11.2 | - | - |
| 10-01-2025 19:00 | 49.89191 | -6.31398 | 2.1 | - | 10 | 5.6 | 214 | 28 | 11.2 | - | - |
| 10-01-2025 18:30 | 49.89185 | -6.31394 | 2.19 | - | 6.7 | 5.7 | 143 | 41 | 11.2 | - | - |
| 10-01-2025 18:00 | 49.89176 | -6.31394 | 2.19 | - | 10 | 6 | 215 | 35 | 11.2 | - | - |
| 10-01-2025 17:30 | 49.89168 | -6.31394 | 2.19 | - | 9.5 | 6 | 225 | 34 | 11.2 | - | - |
| 10-01-2025 17:00 | 49.89181 | -6.31396 | 2.06 | - | 7.4 | 5.8 | 156 | 49 | 11.2 | - | - |
| 10-01-2025 16:30 | 49.89136 | -6.31326 | 2.33 | - | 7.1 | 6 | 156 | 41 | 11 | - | - |
| 10-01-2025 16:00 | 49.89141 | -6.31317 | 2.42 | - | 8.3 | 5.8 | 218 | 34 | 11.2 | - | - |
| 10-01-2025 15:30 | 49.89132 | -6.31278 | 2.28 | - | 7.4 | 5.7 | 139 | 38 | 11.2 | - | - |
| 10-01-2025 15:00 | 49.89160 | -6.31315 | 2.42 | - | 7.7 | 5.9 | 152 | 41 | 11.2 | - | - |
| 10-01-2025 14:30 | 49.89202 | -6.31173 | 2.37 | - | 7.7 | 5.7 | 150 | 41 | 11.2 | - | - |
| 10-01-2025 14:00 | 49.89216 | -6.31147 | 2.78 | - | 6.9 | 6 | 150 | 34 | 11.2 | - | - |
| 10-01-2025 13:30 | 49.89245 | -6.31147 | 2.83 | - | 7.1 | 6 | 139 | 38 | 11.2 | - | - |
| 10-01-2025 13:00 | 49.89265 | -6.31156 | 2.67 | - | 7.7 | 5.9 | 169 | 38 | 11.2 | - | - |
| 10-01-2025 12:30 | 49.89271 | -6.31169 | 2.83 | - | 7.4 | 5.9 | 150 | 41 | 11.2 | - | - |
| 10-01-2025 12:00 | 49.89284 | -6.31186 | 2.88 | - | 7.7 | 5.9 | 149 | 38 | 11.2 | - | - |
| 10-01-2025 11:30 | 49.89291 | -6.31197 | 2.83 | - | 8 | 5.7 | 160 | 38 | 11.2 | - | - |
| 10-01-2025 11:00 | 49.89291 | -6.31203 | 3.06 | - | 7.1 | 5.9 | 145 | 31 | 11.2 | - | - |
| 10-01-2025 10:30 | 49.89295 | -6.31214 | 3.11 | - | 7.4 | 5.9 | 145 | 28 | 11.2 | - | - |
| 10-01-2025 10:00 | 49.89304 | -6.31242 | 2.88 | - | 7.1 | 5.6 | 149 | 34 | 11.2 | - | - |
| 10-01-2025 09:30 | 49.89304 | -6.31285 | 2.94 | - | 7.4 | 5.6 | 148 | 31 | 11.2 | - | - |
| 10-01-2025 09:00 | 49.89306 | -6.31304 | 3.17 | - | 7.1 | 5.8 | 153 | 23 | 11.2 | - | - |
| 10-01-2025 08:30 | 49.89291 | -6.31351 | 2.78 | - | 6.7 | 5.5 | 160 | 34 | 11.2 | - | - |
| 10-01-2025 08:00 | 49.89265 | -6.31390 | 2.72 | - | 6.9 | 5.4 | 143 | 28 | 11.2 | - | - |
| 10-01-2025 07:30 | 49.89236 | -6.31407 | 2.62 | - | 6.9 | 5.4 | 169 | 28 | 11.2 | - | - |
| 10-01-2025 07:00 | 49.89209 | -6.31407 | 2.72 | - | 6.5 | 5.4 | 141 | 28 | 11.2 | - | - |
| 10-01-2025 06:30 | 49.89194 | -6.31405 | 2.67 | - | 6.7 | 5.4 | 173 | 28 | 11.2 | - | - |
| 10-01-2025 06:00 | 49.89183 | -6.31403 | 2.47 | - | 6.1 | 5.2 | 135 | 28 | 11.2 | - | - |
| 10-01-2025 05:30 | 49.89187 | -6.31405 | 2.47 | - | 6.2 | 5.2 | 170 | 23 | 11.2 | - | - |
| 10-01-2025 05:00 | 49.89178 | -6.31396 | 2.33 | - | 5.9 | 5 | 138 | 31 | 11.2 | - | - |
| 10-01-2025 04:30 | 49.89180 | -6.31394 | 2.42 | - | 5.7 | 5.2 | 135 | 34 | 11.2 | - | - |
| 10-01-2025 04:00 | 49.89158 | -6.31373 | 2.47 | - | 5.7 | 5.1 | 135 | 31 | 11.2 | - | - |
| 10-01-2025 03:30 | 49.89179 | -6.31396 | 2.24 | - | 5.6 | 4.9 | 122 | 28 | 11.2 | - | - |
| 10-01-2025 03:00 | 49.89200 | -6.31398 | 2.24 | - | 5.3 | 5 | 124 | 31 | 11.2 | - | - |
| 10-01-2025 02:30 | 49.89142 | -6.31302 | 2.1 | - | 5.3 | 4.8 | 124 | 28 | 11.2 | - | - |
| 10-01-2025 02:00 | 49.89239 | -6.31268 | 1.94 | - | 11.1 | 4.6 | 211 | 45 | 11.2 | - | - |
| 10-01-2025 01:30 | 49.89288 | -6.31231 | 1.7 | - | 11.1 | 4.8 | 208 | 49 | 11.3 | - | - |
| 10-01-2025 01:00 | 49.89271 | -6.31175 | 1.63 | - | 9.5 | 4.8 | 214 | 34 | 11.3 | - | - |
| 10-01-2025 00:30 | 49.89270 | -6.31169 | 1.67 | - | 12.5 | 5.2 | 236 | 49 | 11.3 | - | - |
| 10-01-2025 00:00 | 49.89271 | -6.31171 | 1.63 | - | 11.8 | 5.4 | 218 | 45 | 11.2 | - | - |
