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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21-07-2024 00:00 | 49.89282 | -6.31184 | 0.69 | - | 9.5 | 4.3 | 316 | 57 | 14.3 | - | - |
| 20-07-2024 23:30 | 49.89270 | -6.31257 | 0.67 | - | 6.1 | 4.5 | 197 | 49 | 14.4 | - | - |
| 20-07-2024 23:00 | 49.89200 | -6.31364 | 0.69 | - | 5.6 | 4.6 | 207 | 57 | 14.4 | - | - |
| 20-07-2024 22:30 | 49.89181 | -6.31375 | 0.73 | - | 5.9 | 5 | 256 | 53 | 14.4 | - | - |
| 20-07-2024 22:00 | 49.89180 | -6.31394 | 0.78 | - | 10 | 5.3 | 277 | 67 | 14.7 | - | - |
| 20-07-2024 21:30 | 49.89176 | -6.31392 | 0.82 | - | 8.3 | 5.4 | 291 | 57 | 14.8 | - | - |
| 20-07-2024 21:00 | 49.89173 | -6.31392 | 0.99 | - | 6.7 | 5.7 | 256 | 41 | 15 | - | - |
| 20-07-2024 20:30 | 49.89175 | -6.31394 | 1.1 | - | 8.3 | 6 | 245 | 41 | 15 | - | - |
| 20-07-2024 20:00 | 49.89170 | -6.31396 | 0.89 | - | 10 | 5.4 | 257 | 53 | 15.1 | - | - |
| 20-07-2024 19:30 | 49.89164 | -6.31396 | 0.84 | - | 5.6 | 5.2 | 205 | 41 | 14.6 | - | - |
| 20-07-2024 19:00 | 49.89166 | -6.31388 | 0.8 | - | 5.6 | 5 | 226 | 41 | 14.4 | - | - |
| 20-07-2024 18:30 | 49.89162 | -6.31386 | 0.89 | - | 5.9 | 5.1 | 198 | 34 | 14.6 | - | - |
| 20-07-2024 18:00 | 49.89135 | -6.31321 | 0.89 | - | 5.7 | 5.1 | 200 | 38 | 14.6 | - | - |
| 20-07-2024 17:30 | 49.89150 | -6.31356 | 0.94 | - | 5.1 | 5.1 | 190 | 41 | 14.8 | - | - |
| 20-07-2024 17:00 | 49.89134 | -6.31242 | 0.87 | - | 5.6 | 4.8 | 177 | 41 | 14.6 | - | - |
| 20-07-2024 16:30 | 49.89171 | -6.31180 | 0.87 | - | 8 | 4.9 | 321 | 45 | 14.7 | - | - |
| 20-07-2024 16:00 | 49.89252 | -6.31152 | 0.82 | - | 9.5 | 4.7 | 309 | 41 | 15.2 | - | - |
| 20-07-2024 15:30 | 49.89269 | -6.31165 | 0.89 | - | 8.7 | 4.7 | 350 | 23 | 15.4 | - | - |
| 20-07-2024 15:00 | 49.89281 | -6.31173 | 0.92 | - | 8.7 | 4.6 | 319 | 28 | 15.4 | - | - |
| 20-07-2024 14:30 | 49.89267 | -6.31152 | 0.87 | - | 4.9 | 4.4 | 188 | 41 | 14.4 | - | - |
| 20-07-2024 14:00 | 49.89261 | -6.31147 | 0.87 | - | 9.5 | 4.4 | 352 | 28 | 14.4 | - | - |
| 20-07-2024 13:30 | 49.89269 | -6.31158 | 0.8 | - | 4.9 | 4.3 | 186 | 45 | 14.4 | - | - |
| 20-07-2024 13:00 | 49.89275 | -6.31165 | 0.82 | - | 5.1 | 4.2 | 201 | 45 | 14.5 | - | - |
| 20-07-2024 12:30 | 49.89277 | -6.31167 | 0.8 | - | 4.7 | 4.1 | 190 | 34 | 14.7 | - | - |
| 20-07-2024 12:00 | 49.89280 | -6.31171 | 0.78 | - | 5.1 | 4.2 | 197 | 31 | 14.7 | - | - |
| 20-07-2024 11:30 | 49.89288 | -6.31186 | 0.73 | - | 5.3 | 4.1 | 201 | 41 | 14.8 | - | - |
| 20-07-2024 11:00 | 49.89296 | -6.31208 | 0.71 | - | 5.1 | 4.2 | 210 | 41 | 14.7 | - | - |
| 20-07-2024 10:30 | 49.89300 | -6.31257 | 0.75 | - | 5.3 | 4.3 | 212 | 34 | 14.8 | - | - |
| 20-07-2024 10:00 | 49.89281 | -6.31358 | 0.78 | - | 5 | 4.5 | 214 | 38 | 14.8 | - | - |
| 20-07-2024 09:30 | 49.89235 | -6.31396 | 0.8 | - | 5.4 | 4.6 | 214 | 41 | 14.8 | - | - |
| 20-07-2024 09:00 | 49.89207 | -6.31403 | 0.89 | - | 5.6 | 4.8 | 229 | 41 | 14.8 | - | - |
| 20-07-2024 08:30 | 49.89193 | -6.31401 | 0.89 | - | 5.6 | 4.9 | 222 | 34 | 14.8 | - | - |
| 20-07-2024 08:00 | 49.89177 | -6.31396 | 1.04 | - | 5.3 | 4.9 | 210 | 34 | 14.8 | - | - |
| 20-07-2024 07:30 | 49.89173 | -6.31396 | 1.02 | - | 5.3 | 4.8 | 225 | 28 | 14.8 | - | - |
| 20-07-2024 07:00 | 49.89170 | -6.31392 | 1.07 | - | 5.1 | 4.8 | 215 | 26 | 14.5 | - | - |
| 20-07-2024 06:30 | 49.89174 | -6.31396 | 1.04 | - | 5.3 | 4.7 | 219 | 28 | 14.4 | - | - |
| 20-07-2024 06:00 | 49.89149 | -6.31371 | 1.07 | - | 5 | 4.5 | 208 | 31 | 14.6 | - | - |
| 20-07-2024 05:30 | 49.89145 | -6.31336 | 1.1 | - | 4.8 | 4.3 | 202 | 31 | 14.6 | - | - |
| 20-07-2024 05:00 | 49.89132 | -6.31278 | 1.07 | - | 4.5 | 4.1 | 188 | 28 | 14.6 | - | - |
| 20-07-2024 04:30 | 49.89197 | -6.31180 | 0.94 | - | 4.3 | 3.8 | 181 | 34 | 14.6 | - | - |
| 20-07-2024 04:00 | 49.89252 | -6.31150 | 0.94 | - | 4.5 | 3.7 | 191 | 45 | 15 | - | - |
| 20-07-2024 03:30 | 49.89253 | -6.31150 | 0.99 | - | 4.3 | 3.6 | 187 | 34 | 14.8 | - | - |
| 20-07-2024 03:00 | 49.89261 | -6.31152 | 0.97 | - | 3.9 | 3.5 | 188 | 28 | 14.8 | - | - |
| 20-07-2024 02:30 | 49.89269 | -6.31158 | 0.89 | - | 4.1 | 3.5 | 219 | 34 | 14.9 | - | - |
| 20-07-2024 02:00 | 49.89274 | -6.31160 | 0.82 | - | 3.9 | 3.4 | 211 | 41 | 15 | - | - |
| 20-07-2024 01:30 | 49.89280 | -6.31169 | 0.78 | - | 4.3 | 3.4 | 204 | 38 | 15 | - | - |
| 20-07-2024 01:00 | 49.89284 | -6.31182 | 0.8 | - | 4 | 3.5 | 222 | 28 | 15.1 | - | - |
| 20-07-2024 00:30 | 49.89290 | -6.31192 | 0.75 | - | 4 | 3.4 | 207 | 41 | 15.2 | - | - |
| 20-07-2024 00:00 | 49.89293 | -6.31199 | 0.75 | - | 3.8 | 3.4 | 221 | 41 | 15 | - | - |
