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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 07-12-2025 08:30 | 49.89202 | -6.31403 | 2.94 | 4.29 | 11.1 | 6.6 | 232 | 33 | 12.4 | 8.1 | 34.53 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 09-09-2025 00:00 | 49.89308 | -6.31325 | 1.01 | 1.62 | 5.3 | 4.4 | 203 | 35 | 15.5 | 5.7 | 2.87 |
| 08-09-2025 23:30 | 49.89247 | -6.31394 | 0.89 | 1.36 | 8.3 | 4.4 | 219 | 47 | 15.6 | 5.9 | 2.3 |
| 08-09-2025 23:00 | 49.89224 | -6.31396 | 0.87 | 1.14 | 9.1 | 4.7 | 215 | 49 | 15.6 | 6.2 | 2.29 |
| 08-09-2025 22:30 | 49.89263 | -6.31381 | 0.91 | 1.36 | 5.9 | 4.8 | 212 | 51 | 15.7 | 6.2 | 2.52 |
| 08-09-2025 22:00 | 49.89266 | -6.31381 | 0.95 | 1.36 | 9.1 | 5 | 218 | 46 | 15.6 | 6.6 | 2.92 |
| 08-09-2025 21:30 | 49.89223 | -6.31405 | 1.13 | 1.85 | 8.3 | 5.3 | 215 | 37 | 15.6 | 6.6 | 4.13 |
| 08-09-2025 21:00 | 49.89190 | -6.31401 | 1.16 | 1.79 | 7.7 | 5.5 | 219 | 34 | 15.5 | 6.8 | 4.47 |
| 08-09-2025 20:30 | 49.89180 | -6.31401 | 1.35 | 2.58 | 8.3 | 5.9 | 218 | 35 | 15.5 | 7 | 6.28 |
| 08-09-2025 20:00 | 49.89173 | -6.31390 | 1.1 | 1.67 | 8.3 | 5.4 | 224 | 44 | 15.1 | 6.8 | 4.04 |
| 08-09-2025 19:30 | 49.89184 | -6.31386 | 1.23 | 1.85 | 8.3 | 5.4 | 233 | 38 | 15.3 | 6.8 | 5.06 |
| 08-09-2025 19:00 | 49.89160 | -6.31368 | 1.45 | 2.06 | 8.3 | 5.6 | 233 | 40 | 15.3 | 6.7 | 6.95 |
| 08-09-2025 18:30 | 49.89142 | -6.31306 | 1.32 | 2.3 | 8.3 | 5.1 | 210 | 41 | 15.3 | 6.5 | 5.58 |
| 08-09-2025 18:00 | 49.89142 | -6.31216 | 1.23 | 1.77 | 8.3 | 5 | 212 | 43 | 15.3 | 6.7 | 4.95 |
| 08-09-2025 17:30 | 49.89245 | -6.31139 | 1.25 | 1.99 | 9.1 | 4.8 | 280 | 63 | 15.6 | 6.3 | 4.8 |
| 08-09-2025 17:00 | 49.89266 | -6.31141 | 1.26 | 2.36 | 8.3 | 5 | 228 | 57 | 15.9 | 6.4 | 5 |
| 08-09-2025 16:30 | 49.89278 | -6.31145 | 1.29 | 2.4 | 8.3 | 4.9 | 225 | 48 | 16.3 | 6.3 | 5.1 |
| 08-09-2025 16:00 | 49.89289 | -6.31154 | 1.28 | 1.91 | 8.3 | 4.8 | 233 | 47 | 16.3 | 6.2 | 4.99 |
| 08-09-2025 15:30 | 49.89296 | -6.31158 | 1.37 | 2.37 | 8.3 | 5 | 233 | 46 | 16.5 | 6.3 | 5.83 |
| 08-09-2025 15:00 | 49.89289 | -6.31141 | 1.31 | 2.04 | 6.3 | 5 | 242 | 59 | 16.2 | 6.2 | 5.26 |
| 08-09-2025 14:30 | 49.89281 | -6.31145 | 1.31 | 1.96 | 6.7 | 4.8 | 224 | 51 | 14.9 | 6.3 | 5.29 |
| 08-09-2025 14:00 | 49.89278 | -6.31150 | 1.26 | 1.96 | 8.3 | 4.9 | 224 | 43 | 15 | 6.2 | 4.83 |
| 08-09-2025 13:30 | 49.89286 | -6.31156 | 1.28 | 2.04 | 9.1 | 5.1 | 221 | 35 | 15.2 | 6.4 | 5.16 |
| 08-09-2025 13:00 | 49.89287 | -6.31158 | 1.18 | 1.8 | 7.7 | 4.9 | 214 | 42 | 15.4 | 6.3 | 4.32 |
| 08-09-2025 12:30 | 49.89287 | -6.31158 | 1.21 | 2.23 | 7.7 | 5 | 208 | 31 | 15.3 | 6.3 | 4.54 |
| 08-09-2025 12:00 | 49.89295 | -6.31175 | 1.12 | 1.8 | 6.3 | 5.1 | 200 | 36 | 15.4 | 6.4 | 3.96 |
| 08-09-2025 11:30 | 49.89308 | -6.31214 | 1.11 | 1.85 | 7.1 | 5.1 | 204 | 34 | 15.3 | 6.5 | 3.91 |
| 08-09-2025 11:00 | 49.89309 | -6.31274 | 1.1 | 1.58 | 7.7 | 5.3 | 210 | 30 | 15.7 | 6.7 | 3.99 |
| 08-09-2025 10:30 | 49.89303 | -6.31291 | 1.05 | 1.51 | 10 | 5.3 | 214 | 35 | 15.9 | 7.1 | 3.84 |
| 08-09-2025 10:00 | 49.89268 | -6.31364 | 1.21 | 1.9 | 10 | 5.9 | 212 | 29 | 16 | 7.5 | 5.35 |
| 08-09-2025 09:30 | 49.89223 | -6.31401 | 1.28 | 2.26 | 10 | 6.2 | 218 | 30 | 16 | 7.7 | 6.21 |
| 08-09-2025 09:00 | 49.89209 | -6.31401 | 1.32 | 1.86 | 11.1 | 6 | 236 | 38 | 15.9 | 7.4 | 6.34 |
| 08-09-2025 08:30 | 49.89186 | -6.31398 | 1.63 | 2.51 | 10 | 6.7 | 224 | 31 | 15.7 | 8.1 | 10.5 |
| 08-09-2025 08:00 | 49.89175 | -6.31390 | 1.54 | 2.41 | 10 | 6.6 | 215 | 26 | 15.4 | 7.8 | 9.09 |
| 08-09-2025 07:30 | 49.89182 | -6.31381 | 1.49 | 2.15 | 9.1 | 6.5 | 217 | 24 | 15.3 | 7.9 | 8.59 |
| 08-09-2025 07:00 | 49.89161 | -6.31373 | 1.47 | 2.06 | 10 | 6.3 | 219 | 31 | 15.3 | 7.7 | 8.18 |
| 08-09-2025 06:30 | 49.89161 | -6.31360 | 1.67 | 2.47 | 9.1 | 6.3 | 217 | 29 | 15.2 | 7.9 | 10.75 |
| 08-09-2025 06:00 | 49.89143 | -6.31302 | 1.5 | 2.34 | 10 | 5.9 | 214 | 35 | 15.3 | 7.6 | 8.4 |
| 08-09-2025 05:30 | 49.89171 | -6.31175 | 1.31 | 2.02 | 9.1 | 5.6 | 211 | 44 | 15.2 | 7.3 | 6.11 |
| 08-09-2025 05:00 | 49.89272 | -6.31158 | 1.34 | 2.21 | 10 | 5.6 | 224 | 47 | 15.6 | 7.4 | 6.49 |
| 08-09-2025 04:30 | 49.89276 | -6.31154 | 1.48 | 2.07 | 9.1 | 5.9 | 218 | 39 | 15.8 | 7.7 | 8.27 |
| 08-09-2025 04:00 | 49.89285 | -6.31154 | 1.54 | 2.12 | 9.1 | 5.9 | 214 | 33 | 16.1 | 7.5 | 8.73 |
| 08-09-2025 03:30 | 49.89271 | -6.31143 | 1.43 | 2.03 | 10 | 5.5 | 218 | 46 | 15.3 | 7.2 | 7.23 |
| 08-09-2025 03:00 | 49.89278 | -6.31143 | 1.57 | 2.17 | 9.1 | 5.8 | 214 | 32 | 15.6 | 7.5 | 9.09 |
| 08-09-2025 02:30 | 49.89290 | -6.31156 | 1.51 | 2.25 | 10 | 5.6 | 217 | 44 | 15.6 | 7.2 | 8.07 |
| 08-09-2025 02:00 | 49.89294 | -6.31160 | 1.61 | 2.26 | 10 | 5.6 | 214 | 29 | 15.9 | 7.3 | 9.27 |
| 08-09-2025 01:30 | 49.89296 | -6.31173 | 1.51 | 2.32 | 10 | 5.6 | 218 | 30 | 15.7 | 7.4 | 8.32 |
| 08-09-2025 01:00 | 49.89286 | -6.31154 | 1.46 | 2.37 | 10 | 5.6 | 217 | 38 | 15.4 | 7.2 | 7.54 |
| 08-09-2025 00:30 | 49.89295 | -6.31169 | 1.49 | 2.17 | 10.5 | 5.6 | 222 | 24 | 15 | 7.3 | 7.94 |
| 08-09-2025 00:00 | 49.89290 | -6.31162 | 1.44 | 2.1 | 10 | 5.9 | 217 | 26 | 14.9 | 7.8 | 7.93 |
