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 01:00 | 49.89156 | -6.31328 | 2.42 | 3.8 | 10.5 | 6.3 | 200 | 26 | 13.6 | 8.2 | 23.67 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-09-2025 00:00 | 49.89217 | -6.31401 | 1.42 | 2.09 | 6.7 | 5.3 | 186 | 35 | 15.1 | 6.5 | 6.39 |
| 09-09-2025 23:30 | 49.89202 | -6.31398 | 1.43 | 2.49 | 7.1 | 5.4 | 200 | 40 | 15.1 | 6.6 | 6.61 |
| 09-09-2025 23:00 | 49.89218 | -6.31405 | 1.31 | 2.35 | 7.7 | 5.1 | 208 | 42 | 15.1 | 6.4 | 5.39 |
| 09-09-2025 22:30 | 49.89224 | -6.31403 | 1.37 | 2 | 8.3 | 5.5 | 214 | 34 | 15.1 | 6.9 | 6.38 |
| 09-09-2025 22:00 | 49.89209 | -6.31401 | 1.47 | 2.31 | 7.7 | 5.7 | 201 | 36 | 15.1 | 7 | 7.37 |
| 09-09-2025 21:30 | 49.89194 | -6.31403 | 1.65 | 2.45 | 8.3 | 6 | 211 | 35 | 15.1 | 7 | 9.41 |
| 09-09-2025 21:00 | 49.89181 | -6.31403 | 1.71 | 2.72 | 7.7 | 6.1 | 210 | 37 | 15.1 | 6.9 | 9.91 |
| 09-09-2025 20:30 | 49.89167 | -6.31396 | 1.89 | 3.06 | 7.1 | 6.1 | 207 | 35 | 15.1 | 6.9 | 12.07 |
| 09-09-2025 20:00 | 49.89190 | -6.31392 | 1.74 | 2.67 | 7.1 | 5.8 | 198 | 38 | 14.9 | 6.8 | 10.03 |
| 09-09-2025 19:30 | 49.89156 | -6.31364 | 1.99 | 3.91 | 7.1 | 6.1 | 190 | 33 | 15.1 | 6.9 | 13.46 |
| 09-09-2025 19:00 | 49.89131 | -6.31250 | 1.88 | 3.3 | 7.7 | 5.6 | 191 | 37 | 15.2 | 6.7 | 11.6 |
| 09-09-2025 18:30 | 49.89141 | -6.31246 | 1.72 | 2.61 | 7.7 | 5.6 | 200 | 37 | 15.1 | 6.6 | 9.64 |
| 09-09-2025 18:00 | 49.89188 | -6.31145 | 1.78 | 3.06 | 7.1 | 5.5 | 196 | 35 | 15.3 | 6.6 | 10.25 |
| 09-09-2025 17:30 | 49.89239 | -6.31135 | 1.74 | 2.81 | 6.7 | 5.4 | 184 | 45 | 15.1 | 6.4 | 9.56 |
| 09-09-2025 17:00 | 49.89268 | -6.31141 | 1.83 | 2.68 | 7.7 | 5.5 | 208 | 40 | 15.2 | 6.5 | 10.72 |
| 09-09-2025 16:30 | 49.89281 | -6.31147 | 1.83 | 3.27 | 7.1 | 5.5 | 207 | 47 | 15.6 | 6.5 | 10.76 |
| 09-09-2025 16:00 | 49.89290 | -6.31156 | 1.79 | 3.05 | 7.7 | 5.3 | 217 | 45 | 15.7 | 6.4 | 10.09 |
| 09-09-2025 15:30 | 49.89295 | -6.31162 | 2.12 | 3.85 | 7.1 | 5.6 | 217 | 35 | 15.5 | 6.5 | 14.43 |
| 09-09-2025 15:00 | 49.89284 | -6.31137 | 1.91 | 3.16 | 7.7 | 5.5 | 204 | 37 | 14.9 | 6.5 | 11.59 |
| 09-09-2025 14:30 | 49.89283 | -6.31147 | 1.86 | 3.49 | 7.1 | 5.3 | 198 | 33 | 14.9 | 6.3 | 10.77 |
| 09-09-2025 14:00 | 49.89286 | -6.31154 | 2.02 | 3.7 | 7.7 | 5.4 | 210 | 36 | 15 | 6.4 | 12.88 |
| 09-09-2025 13:30 | 49.89292 | -6.31165 | 1.95 | 3.2 | 7.1 | 5.3 | 197 | 41 | 15 | 6.3 | 11.67 |
| 09-09-2025 13:00 | 49.89287 | -6.31158 | 1.99 | 3.17 | 7.7 | 5.3 | 210 | 34 | 15.4 | 6.3 | 12.33 |
| 09-09-2025 12:30 | 49.89298 | -6.31169 | 1.97 | 3.27 | 7.7 | 5.1 | 204 | 22 | 15.4 | 6.2 | 11.8 |
| 09-09-2025 12:00 | 49.89308 | -6.31197 | 1.75 | 2.53 | 7.1 | 5.2 | 203 | 26 | 15.2 | 6.3 | 9.45 |
| 09-09-2025 11:30 | 49.89316 | -6.31233 | 1.67 | 2.35 | 7.7 | 4.9 | 218 | 31 | 15.2 | 6.2 | 8.42 |
| 09-09-2025 11:00 | 49.89319 | -6.31263 | 1.86 | 3.11 | 7.7 | 5.3 | 217 | 25 | 15.3 | 6.6 | 11.27 |
| 09-09-2025 10:30 | 49.89312 | -6.31325 | 1.95 | 2.96 | 8.3 | 5.3 | 215 | 24 | 15.4 | 6.7 | 12.56 |
| 09-09-2025 10:00 | 49.89259 | -6.31398 | 2.16 | 3.5 | 7.7 | 5.6 | 211 | 26 | 15.4 | 6.9 | 15.75 |
| 09-09-2025 09:30 | 49.89204 | -6.31405 | 2.34 | 3.7 | 8.3 | 5.7 | 219 | 29 | 15.5 | 6.8 | 18.23 |
| 09-09-2025 09:00 | 49.89182 | -6.31396 | 2.65 | 4.24 | 7.7 | 6.1 | 208 | 23 | 15.6 | 6.9 | 23.63 |
| 09-09-2025 08:30 | 49.89174 | -6.31403 | 2.43 | 4.42 | 8.3 | 5.8 | 224 | 32 | 15.5 | 6.7 | 19.3 |
| 09-09-2025 08:00 | 49.89179 | -6.31390 | 2.37 | 3.64 | 7.1 | 5.7 | 214 | 26 | 15.4 | 6.5 | 18.02 |
| 09-09-2025 07:30 | 49.89144 | -6.31356 | 2.24 | 4.05 | 7.1 | 5.5 | 217 | 25 | 15.2 | 6.2 | 15.34 |
| 09-09-2025 07:00 | 49.89148 | -6.31323 | 2.1 | 4.12 | 5.9 | 5.1 | 188 | 27 | 15.3 | 5.9 | 12.73 |
| 09-09-2025 06:30 | 49.89278 | -6.31278 | 1.71 | 2.76 | 7.1 | 4.5 | 222 | 46 | 15.3 | 5.5 | 7.95 |
| 09-09-2025 06:00 | 49.89311 | -6.31229 | 1.65 | 2.78 | 5.6 | 4.6 | 200 | 40 | 15.5 | 5.7 | 7.56 |
| 09-09-2025 05:30 | 49.89286 | -6.31169 | 1.81 | 2.57 | 6.3 | 4.6 | 219 | 47 | 15.6 | 5.5 | 8.8 |
| 09-09-2025 05:00 | 49.89284 | -6.31156 | 1.82 | 2.77 | 5.6 | 4.6 | 215 | 39 | 15.6 | 5.5 | 8.93 |
| 09-09-2025 04:30 | 49.89292 | -6.31156 | 1.63 | 2.89 | 5.6 | 4.3 | 217 | 47 | 15.9 | 5.3 | 6.95 |
| 09-09-2025 04:00 | 49.89294 | -6.31145 | 1.76 | 3.23 | 5.3 | 4.3 | 212 | 35 | 16 | 5.2 | 7.95 |
| 09-09-2025 03:30 | 49.89297 | -6.31162 | 1.62 | 2.56 | 5.3 | 4.2 | 219 | 42 | 15.5 | 5.2 | 6.67 |
| 09-09-2025 03:00 | 49.89296 | -6.31162 | 1.5 | 1.91 | 5.3 | 4.1 | 221 | 44 | 15.5 | 5.1 | 5.62 |
| 09-09-2025 02:30 | 49.89292 | -6.31156 | 1.41 | 2.36 | 5 | 4.1 | 210 | 34 | 15.5 | 5.1 | 4.94 |
| 09-09-2025 02:00 | 49.89285 | -6.31154 | 1.24 | 1.8 | 5.6 | 4 | 204 | 39 | 15.2 | 5.1 | 3.82 |
| 09-09-2025 01:30 | 49.89286 | -6.31158 | 1.21 | 1.7 | 5 | 4.3 | 207 | 31 | 15.4 | 5.3 | 3.83 |
| 09-09-2025 01:00 | 49.89290 | -6.31165 | 1.11 | 1.57 | 5.9 | 4.2 | 208 | 40 | 15.3 | 5.3 | 3.22 |
| 09-09-2025 00:30 | 49.89314 | -6.31225 | 1.07 | 1.45 | 5 | 4.4 | 208 | 32 | 15.5 | 5.5 | 3.08 |
| 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 |
