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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18-08-2026 20:00 | 49.89272 | -6.31150 | 0.56 | 0.76 | 6.3 | 4 | 328 | 37 | 18.1 | 5.2 | 0.8 |
| Date | Highest Hs 2026 | Storm Alert Threshold (0.25 yr Return Period Hs) |
Swell Alert Threshold (0.25 yr Return Period Te) |
|---|---|---|---|
| 23-01 | 6.4m | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15-06-2026 00:00 | 49.89296 | -6.31175 | 0.96 | 1.45 | 4.8 | 3.9 | 121 | 32 | 13.9 | 4.5 | 2.05 |
| 14-06-2026 23:30 | 49.89301 | -6.31190 | 0.97 | 1.9 | 5 | 3.8 | 112 | 28 | 13.9 | 4.5 | 2.1 |
| 14-06-2026 23:00 | 49.89309 | -6.31225 | 1.05 | 1.56 | 4.8 | 3.7 | 114 | 21 | 13.8 | 4.3 | 2.34 |
| 14-06-2026 22:30 | 49.89309 | -6.31246 | 1.08 | 1.82 | 4.5 | 3.8 | 111 | 23 | 13.8 | 4.4 | 2.55 |
| 14-06-2026 22:00 | 49.89303 | -6.31272 | 1.19 | 1.98 | 5 | 4 | 120 | 21 | 13.9 | 4.5 | 3.15 |
| 14-06-2026 21:30 | 49.89296 | -6.31295 | 1.1 | 1.74 | 5 | 3.8 | 125 | 31 | 13.9 | 4.6 | 2.73 |
| 14-06-2026 21:00 | 49.89271 | -6.31341 | 1 | 1.61 | 5.3 | 3.8 | 120 | 30 | 13.9 | 4.6 | 2.26 |
| 14-06-2026 20:30 | 49.89238 | -6.31360 | 1.07 | 1.43 | 5 | 3.8 | 129 | 30 | 13.9 | 4.7 | 2.64 |
| 14-06-2026 20:00 | 49.89217 | -6.31360 | 1.14 | 1.65 | 5.3 | 4.1 | 117 | 24 | 14 | 5.1 | 3.28 |
| 14-06-2026 19:30 | 49.89205 | -6.31364 | 1.12 | 1.64 | 5.3 | 4 | 120 | 29 | 14 | 5 | 3.09 |
| 14-06-2026 19:00 | 49.89197 | -6.31366 | 1.14 | 1.67 | 5.3 | 4 | 111 | 28 | 13.9 | 5 | 3.18 |
| 14-06-2026 18:30 | 49.89204 | -6.31360 | 1.1 | 1.62 | 5.3 | 4 | 104 | 33 | 13.9 | 5 | 3 |
| 14-06-2026 18:00 | 49.89191 | -6.31347 | 1.2 | 2.02 | 5.3 | 4.2 | 97 | 35 | 13.9 | 5.1 | 3.57 |
| 14-06-2026 17:30 | 49.89166 | -6.31274 | 1.49 | 2.27 | 5.3 | 4.3 | 97 | 26 | 14 | 5 | 5.45 |
| 14-06-2026 17:00 | 49.89171 | -6.31244 | 1.47 | 2.37 | 5.6 | 4.3 | 100 | 29 | 14 | 5 | 5.26 |
| 14-06-2026 16:30 | 49.89173 | -6.31222 | 1.51 | 2.61 | 5.6 | 4.3 | 111 | 29 | 14 | 5 | 5.59 |
| 14-06-2026 16:00 | 49.89209 | -6.31169 | 1.54 | 2.06 | 5.3 | 4.3 | 97 | 27 | 14.1 | 4.9 | 5.73 |
| 14-06-2026 15:30 | 49.89276 | -6.31162 | 1.6 | 2.95 | 5.3 | 4.4 | 100 | 31 | 13.9 | 5 | 6.27 |
| 14-06-2026 15:00 | 49.89281 | -6.31165 | 1.38 | 2.32 | 5 | 4.3 | 100 | 27 | 13.9 | 5 | 4.66 |
| 14-06-2026 14:30 | 49.89284 | -6.31162 | 1.54 | 2.56 | 5.3 | 4.4 | 100 | 24 | 13.9 | 5.1 | 5.91 |
| 14-06-2026 14:00 | 49.89284 | -6.31158 | 1.45 | 2.46 | 5.3 | 4.3 | 103 | 24 | 13.9 | 5 | 5.11 |
| 14-06-2026 13:30 | 49.89294 | -6.31173 | 1.35 | 2.1 | 4.8 | 4.1 | 114 | 32 | 13.9 | 4.9 | 4.34 |
| 14-06-2026 13:00 | 49.89294 | -6.31169 | 1.37 | 2.32 | 4.8 | 4.1 | 107 | 26 | 13.9 | 4.7 | 4.37 |
| 14-06-2026 12:30 | 49.89301 | -6.31184 | 1.46 | 2.69 | 4.5 | 4.1 | 111 | 26 | 13.8 | 4.7 | 4.89 |
| 14-06-2026 12:00 | 49.89300 | -6.31184 | 1.33 | 1.83 | 4.8 | 4 | 107 | 29 | 13.9 | 4.5 | 3.95 |
| 14-06-2026 11:30 | 49.89303 | -6.31197 | 1.19 | 1.92 | 4.5 | 3.8 | 115 | 27 | 13.9 | 4.4 | 3.07 |
| 14-06-2026 11:00 | 49.89304 | -6.31212 | 1.09 | 1.78 | 4.2 | 3.7 | 118 | 28 | 13.9 | 4.3 | 2.53 |
| 14-06-2026 10:30 | 49.89308 | -6.31233 | 1.23 | 1.89 | 4.3 | 3.7 | 110 | 22 | 13.9 | 4.3 | 3.2 |
| 14-06-2026 10:00 | 49.89306 | -6.31272 | 1.13 | 1.94 | 4.2 | 3.7 | 115 | 29 | 13.9 | 4.4 | 2.77 |
| 14-06-2026 09:30 | 49.89282 | -6.31336 | 1.07 | 1.61 | 4.2 | 3.5 | 118 | 26 | 14 | 4.2 | 2.38 |
| 14-06-2026 09:00 | 49.89265 | -6.31351 | 0.98 | 1.76 | 3.9 | 3.4 | 124 | 28 | 13.9 | 4.3 | 2.04 |
| 14-06-2026 08:30 | 49.89250 | -6.31358 | 0.89 | 1.22 | 3.6 | 3.4 | 121 | 22 | 13.9 | 4.5 | 1.74 |
| 14-06-2026 08:00 | 49.89225 | -6.31362 | 0.79 | 1.29 | 3.3 | 3.4 | 118 | 22 | 13.9 | 4.9 | 1.5 |
| 14-06-2026 07:30 | 49.89207 | -6.31358 | 0.75 | 1.17 | 7.7 | 3.6 | 196 | 45 | 13.8 | 5.4 | 1.49 |
| 14-06-2026 07:00 | 49.89197 | -6.31360 | 0.71 | 1.14 | 10.5 | 3.9 | 316 | 44 | 13.9 | 6.1 | 1.5 |
| 14-06-2026 06:30 | 49.89202 | -6.31364 | 0.61 | 1.01 | 10.5 | 4.1 | 110 | 78 | 13.8 | 6.3 | 1.15 |
| 14-06-2026 06:00 | 49.89209 | -6.31356 | 0.57 | 0.88 | 10.5 | 4.4 | 298 | 66 | 13.8 | 7.2 | 1.15 |
| 14-06-2026 05:30 | 49.89175 | -6.31332 | 0.68 | 1.01 | 10.5 | 5.1 | 277 | 53 | 13.8 | 7.8 | 1.76 |
| 14-06-2026 05:00 | 49.89178 | -6.31291 | 0.64 | 0.97 | 10 | 4.8 | 246 | 61 | 13.8 | 7.3 | 1.47 |
| 14-06-2026 04:30 | 49.89172 | -6.31218 | 0.57 | 0.86 | 10.5 | 4.2 | 318 | 70 | 13.8 | 6.7 | 1.08 |
| 14-06-2026 04:00 | 49.89178 | -6.31220 | 0.62 | 0.92 | 9.1 | 4.5 | 315 | 63 | 13.8 | 7.2 | 1.36 |
| 14-06-2026 03:30 | 49.89247 | -6.31167 | 0.58 | 0.89 | 10 | 4.3 | 332 | 46 | 13.8 | 6.9 | 1.14 |
| 14-06-2026 03:00 | 49.89270 | -6.31158 | 0.65 | 0.96 | 10.5 | 4.3 | 326 | 37 | 13.8 | 6.8 | 1.42 |
| 14-06-2026 02:30 | 49.89281 | -6.31158 | 0.62 | 1.18 | 10 | 4.5 | 335 | 47 | 13.8 | 6.7 | 1.27 |
| 14-06-2026 02:00 | 49.89287 | -6.31165 | 0.65 | 1.07 | 9.1 | 5.1 | 326 | 49 | 13.9 | 7.5 | 1.56 |
| 14-06-2026 01:30 | 49.89287 | -6.31162 | 0.59 | 0.89 | 11.1 | 5.2 | 344 | 66 | 14 | 7.7 | 1.32 |
| 14-06-2026 01:00 | 49.89295 | -6.31169 | 0.57 | 0.73 | 10 | 5.4 | 322 | 49 | 14.2 | 7.8 | 1.25 |
| 14-06-2026 00:30 | 49.89295 | -6.31175 | 0.54 | 0.79 | 10.5 | 5 | 338 | 52 | 13.8 | 7.4 | 1.06 |
| 14-06-2026 00:00 | 49.89293 | -6.31169 | 0.54 | 0.7 | 10.5 | 4.7 | 321 | 58 | 13.8 | 7.1 | 1.02 |
