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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 13-11-2025 00:30 | 49.89147 | -6.31231 | 2.6 | 3.74 | 11.1 | 6.6 | 197 | 27 | 13.6 | 8.5 | 28.09 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 08-09-2025 00:00 | 49.89290 | -6.31162 | 1.44 | 2.1 | 10 | 5.9 | 217 | 26 | 14.9 | 7.8 | 7.93 |
| 07-09-2025 23:30 | 49.89289 | -6.31167 | 1.39 | 2.43 | 10.5 | 5.8 | 219 | 25 | 14.8 | 7.5 | 7.1 |
| 07-09-2025 23:00 | 49.89307 | -6.31222 | 1.37 | 2.56 | 10 | 5.7 | 214 | 28 | 15.1 | 7.3 | 6.74 |
| 07-09-2025 22:30 | 49.89280 | -6.31334 | 1.37 | 2.04 | 10.5 | 5.8 | 208 | 40 | 15.5 | 7.3 | 6.74 |
| 07-09-2025 22:00 | 49.89221 | -6.31375 | 1.52 | 2.29 | 10.5 | 6.2 | 212 | 36 | 15.6 | 7.8 | 8.79 |
| 07-09-2025 21:30 | 49.89201 | -6.31386 | 1.72 | 2.39 | 10 | 6.6 | 217 | 24 | 15.7 | 8 | 11.68 |
| 07-09-2025 21:00 | 49.89198 | -6.31396 | 1.68 | 3.24 | 10.5 | 6.6 | 219 | 26 | 16 | 8.1 | 11.2 |
| 07-09-2025 20:30 | 49.89204 | -6.31403 | 1.83 | 2.93 | 10 | 6.8 | 217 | 30 | 16.2 | 8.2 | 13.53 |
| 07-09-2025 20:00 | 49.89183 | -6.31396 | 2.26 | 3.37 | 10 | 7.1 | 208 | 27 | 15.8 | 8.3 | 20.84 |
| 07-09-2025 19:30 | 49.89173 | -6.31405 | 2.45 | 4.11 | 10 | 7.4 | 210 | 29 | 15.5 | 8.5 | 24.98 |
| 07-09-2025 19:00 | 49.89178 | -6.31418 | 2.26 | 3.2 | 10 | 7 | 214 | 33 | 15.3 | 8.2 | 20.51 |
| 07-09-2025 18:30 | 49.89156 | -6.31356 | 2.42 | 3.8 | 9.1 | 7.1 | 210 | 24 | 15.3 | 8.3 | 23.83 |
| 07-09-2025 18:00 | 49.89138 | -6.31280 | 2.18 | 3.01 | 10 | 6.6 | 207 | 28 | 15.5 | 8 | 18.61 |
| 07-09-2025 17:30 | 49.89138 | -6.31255 | 2.02 | 3 | 10 | 6.6 | 210 | 30 | 15.5 | 8.1 | 16.25 |
| 07-09-2025 17:00 | 49.89177 | -6.31154 | 2.06 | 3.48 | 9.1 | 6.5 | 200 | 21 | 15.4 | 7.9 | 16.46 |
| 07-09-2025 16:30 | 49.89278 | -6.31156 | 2 | 3.04 | 10 | 6.6 | 205 | 30 | 15.5 | 8.1 | 15.95 |
| 07-09-2025 16:00 | 49.89284 | -6.31158 | 1.81 | 3.08 | 9.1 | 6.3 | 211 | 35 | 15.7 | 7.8 | 12.61 |
| 07-09-2025 15:30 | 49.89284 | -6.31158 | 1.77 | 2.78 | 10 | 6.2 | 210 | 30 | 15.4 | 7.7 | 11.88 |
| 07-09-2025 15:00 | 49.89280 | -6.31147 | 1.77 | 2.89 | 10 | 6.3 | 210 | 25 | 15.3 | 7.7 | 11.8 |
| 07-09-2025 14:30 | 49.89286 | -6.31154 | 1.81 | 2.99 | 10 | 6.3 | 210 | 30 | 15.3 | 7.9 | 12.7 |
| 07-09-2025 14:00 | 49.89283 | -6.31145 | 1.78 | 2.83 | 10 | 6.3 | 212 | 27 | 15.3 | 7.8 | 12.11 |
| 07-09-2025 13:30 | 49.89287 | -6.31152 | 1.64 | 2.4 | 10.5 | 6 | 217 | 37 | 15.3 | 7.5 | 9.95 |
| 07-09-2025 13:00 | 49.89289 | -6.31158 | 1.65 | 2.33 | 11.1 | 6 | 217 | 36 | 15 | 7.4 | 9.88 |
| 07-09-2025 12:30 | 49.89289 | -6.31158 | 1.59 | 2.36 | 11.1 | 5.6 | 224 | 37 | 15 | 7 | 8.71 |
| 07-09-2025 12:00 | 49.89290 | -6.31167 | 1.55 | 2.51 | 8.3 | 5.7 | 214 | 26 | 14.8 | 7.2 | 8.47 |
| 07-09-2025 11:30 | 49.89285 | -6.31160 | 1.38 | 2.39 | 11.1 | 5.6 | 218 | 36 | 15.1 | 7.2 | 6.73 |
| 07-09-2025 11:00 | 49.89292 | -6.31171 | 1.46 | 2.01 | 7.7 | 5.6 | 207 | 34 | 15.5 | 6.9 | 7.22 |
| 07-09-2025 10:30 | 49.89305 | -6.31201 | 1.54 | 2.26 | 7.1 | 5.7 | 191 | 34 | 16 | 7 | 8.17 |
| 07-09-2025 10:00 | 49.89300 | -6.31295 | 1.69 | 2.42 | 6.7 | 6.1 | 186 | 27 | 16.1 | 7.5 | 10.49 |
| 07-09-2025 09:30 | 49.89242 | -6.31386 | 1.87 | 3.11 | 10.5 | 6.5 | 219 | 23 | 16.1 | 8 | 13.69 |
| 07-09-2025 09:00 | 49.89209 | -6.31398 | 2.19 | 3.75 | 9.1 | 6.8 | 222 | 18 | 16 | 8.2 | 19.37 |
| 07-09-2025 08:30 | 49.89191 | -6.31396 | 2.51 | 3.71 | 11.8 | 7 | 217 | 23 | 15.8 | 8.5 | 26.35 |
| 07-09-2025 08:00 | 49.89181 | -6.31394 | 2.86 | 4.47 | 10 | 6.9 | 224 | 21 | 15.6 | 8.2 | 32.78 |
| 07-09-2025 07:30 | 49.89178 | -6.31401 | 3.06 | 4.36 | 10.5 | 7.1 | 225 | 22 | 15.7 | 8.4 | 38.73 |
| 07-09-2025 07:00 | 49.89179 | -6.31394 | 2.8 | 4.89 | 10 | 6.6 | 229 | 20 | 15.6 | 7.9 | 30.28 |
| 07-09-2025 06:30 | 49.89159 | -6.31368 | 3.11 | 4.95 | 10.5 | 6.8 | 228 | 21 | 15.7 | 8.1 | 38.35 |
| 07-09-2025 06:00 | 49.89145 | -6.31308 | 2.51 | 3.68 | 11.8 | 5.9 | 210 | 31 | 15.8 | 7.3 | 22.63 |
| 07-09-2025 05:30 | 49.89142 | -6.31283 | 2.43 | 4.22 | 6.7 | 5.6 | 174 | 36 | 15.7 | 6.7 | 19.45 |
| 07-09-2025 05:00 | 49.89194 | -6.31184 | 2.25 | 3.38 | 7.1 | 5.2 | 180 | 31 | 15.7 | 6.2 | 15.52 |
| 07-09-2025 04:30 | 49.89275 | -6.31156 | 2.19 | 3.28 | 6.7 | 5.1 | 177 | 32 | 16.2 | 6 | 14.1 |
| 07-09-2025 04:00 | 49.89277 | -6.31152 | 2.05 | 3.91 | 6.7 | 4.8 | 172 | 36 | 16.2 | 5.7 | 11.74 |
| 07-09-2025 03:30 | 49.89279 | -6.31152 | 2.35 | 3.55 | 6.7 | 5.1 | 173 | 33 | 16.3 | 5.8 | 15.74 |
| 07-09-2025 03:00 | 49.89279 | -6.31145 | 2.21 | 3.7 | 6.7 | 4.8 | 167 | 31 | 16.2 | 5.5 | 13.28 |
| 07-09-2025 02:30 | 49.89291 | -6.31156 | 2.09 | 3.59 | 6.3 | 4.7 | 163 | 36 | 16.2 | 5.5 | 11.69 |
| 07-09-2025 02:00 | 49.89294 | -6.31162 | 2.12 | 3.5 | 6.7 | 4.7 | 172 | 36 | 16.4 | 5.4 | 12 |
| 07-09-2025 01:30 | 49.89295 | -6.31169 | 2 | 3.03 | 6.3 | 4.4 | 163 | 37 | 16 | 5.3 | 10.47 |
| 07-09-2025 01:00 | 49.89311 | -6.31199 | 2.02 | 3.15 | 6.7 | 4.5 | 170 | 39 | 16.3 | 5.5 | 10.98 |
| 07-09-2025 00:30 | 49.89314 | -6.31220 | 1.93 | 3.22 | 6.3 | 4.5 | 165 | 44 | 15.2 | 5.4 | 9.8 |
| 07-09-2025 00:00 | 49.89309 | -6.31197 | 2.01 | 3.13 | 6.3 | 4.6 | 156 | 40 | 15.2 | 5.4 | 10.65 |
