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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12-04-2026 10:30 | 49.89274 | -6.31156 | 1.63 | 2.36 | 8.3 | 5.5 | 284 | 57 | 11.1 | 7.8 | 10.19 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 18-02-2026 00:00 | 49.89311 | -6.31238 | 2.14 | 3.29 | 6.7 | 5.2 | 127 | 36 | 11 | 6.1 | 13.74 |
| 17-02-2026 23:30 | 49.89306 | -6.31323 | 2.43 | 4.18 | 6.7 | 5.3 | 132 | 32 | 11 | 6.2 | 18.06 |
| 17-02-2026 23:00 | 49.89293 | -6.31358 | 2.6 | 4.58 | 6.7 | 5.3 | 131 | 36 | 11 | 6.3 | 20.77 |
| 17-02-2026 22:30 | 49.89266 | -6.31392 | 2.73 | 4.05 | 7.1 | 5.6 | 142 | 28 | 11 | 6.5 | 23.86 |
| 17-02-2026 22:00 | 49.89230 | -6.31405 | 2.61 | 3.82 | 7.1 | 5.6 | 143 | 36 | 11 | 6.6 | 22.08 |
| 17-02-2026 21:30 | 49.89201 | -6.31403 | 2.5 | 3.55 | 7.1 | 5.4 | 132 | 40 | 11 | 6.7 | 20.69 |
| 17-02-2026 21:00 | 49.89190 | -6.31398 | 2.73 | 4.3 | 7.1 | 5.8 | 138 | 33 | 11 | 7.1 | 25.79 |
| 17-02-2026 20:30 | 49.89184 | -6.31405 | 2.82 | 4.65 | 7.1 | 5.7 | 158 | 32 | 11 | 7 | 27.28 |
| 17-02-2026 20:00 | 49.89162 | -6.31416 | 3.12 | 5.06 | 7.1 | 5.9 | 155 | 32 | 11 | 7 | 33.56 |
| 17-02-2026 19:30 | 49.89181 | -6.31405 | 3.04 | 4.9 | 6.7 | 5.7 | 136 | 31 | 11 | 6.8 | 30.68 |
| 17-02-2026 19:00 | 49.89159 | -6.31371 | 3.07 | 5.38 | 6.2 | 5.6 | 131 | 33 | 10.9 | 6.5 | 30.12 |
| 17-02-2026 18:30 | 49.89163 | -6.31360 | 2.63 | 4.51 | 6.2 | 5.3 | 145 | 33 | 10.9 | 6.3 | 21.37 |
| 17-02-2026 18:00 | 49.89144 | -6.31293 | 2.64 | 3.73 | 6.2 | 5.2 | 143 | 28 | 10.9 | 6.2 | 21.2 |
| 17-02-2026 17:30 | 49.89235 | -6.31240 | 2.47 | 3.5 | 5.6 | 4.9 | 145 | 27 | 10.9 | 5.8 | 17.29 |
| 17-02-2026 17:00 | 49.89281 | -6.31171 | 2.24 | 3.34 | 5.6 | 4.8 | 138 | 28 | 11 | 5.8 | 14.25 |
| 17-02-2026 16:30 | 49.89293 | -6.31177 | 2.01 | 2.93 | 5 | 4.6 | 152 | 40 | 11 | 5.9 | 11.78 |
| 17-02-2026 16:00 | 49.89289 | -6.31162 | 1.94 | 2.9 | 4.5 | 4.6 | 146 | 31 | 11 | 6 | 11.02 |
| 17-02-2026 15:30 | 49.89291 | -6.31160 | 1.71 | 2.53 | 11.8 | 4.6 | 252 | 67 | 11 | 6.4 | 9.22 |
| 17-02-2026 15:00 | 49.89290 | -6.31156 | 1.69 | 2.27 | 11.1 | 4.7 | 228 | 44 | 11 | 6.8 | 9.5 |
| 17-02-2026 14:30 | 49.89295 | -6.31165 | 1.6 | 2.33 | 7.7 | 4.6 | 245 | 48 | 11 | 6.6 | 8.24 |
| 17-02-2026 14:00 | 49.89296 | -6.31171 | 1.53 | 2.28 | 10 | 4.5 | 218 | 48 | 11 | 6.6 | 7.55 |
| 17-02-2026 13:30 | 49.89305 | -6.31188 | 1.51 | 2.64 | 11.8 | 4.7 | 204 | 42 | 11 | 6.6 | 7.38 |
| 17-02-2026 13:00 | 49.89308 | -6.31199 | 1.42 | 2.14 | 9.1 | 4.7 | 218 | 38 | 11 | 6.8 | 6.77 |
| 17-02-2026 12:30 | 49.89314 | -6.31235 | 1.38 | 2.03 | 13.3 | 4.7 | 190 | 41 | 11 | 7.2 | 6.68 |
| 17-02-2026 12:00 | 49.89311 | -6.31272 | 1.32 | 2.13 | 6.7 | 4.6 | 214 | 51 | 10.9 | 6.9 | 5.86 |
| 17-02-2026 11:30 | 49.89297 | -6.31347 | 1.25 | 1.73 | 7.7 | 4.7 | 201 | 49 | 11 | 6.8 | 5.17 |
| 17-02-2026 11:00 | 49.89248 | -6.31401 | 1.21 | 1.97 | 11.8 | 4.9 | 271 | 62 | 11 | 7.5 | 5.38 |
| 17-02-2026 10:30 | 49.89211 | -6.31401 | 1.3 | 2.16 | 11.1 | 5.3 | 270 | 69 | 11 | 7.8 | 6.45 |
| 17-02-2026 10:00 | 49.89215 | -6.31403 | 1.29 | 2.11 | 10.5 | 5.6 | 243 | 48 | 11 | 8.3 | 6.81 |
| 17-02-2026 09:30 | 49.89217 | -6.31405 | 1.33 | 1.95 | 12.5 | 6.2 | 308 | 64 | 11 | 8.5 | 7.35 |
| 17-02-2026 09:00 | 49.89203 | -6.31403 | 1.7 | 2.39 | 12.5 | 7.1 | 252 | 56 | 11 | 9 | 12.73 |
| 17-02-2026 08:30 | 49.89183 | -6.31396 | 1.8 | 2.97 | 9.1 | 7.3 | 224 | 31 | 11 | 8.9 | 14.2 |
| 17-02-2026 08:00 | 49.89174 | -6.31396 | 1.89 | 2.94 | 13.3 | 7.3 | 260 | 59 | 10.9 | 9 | 15.72 |
| 17-02-2026 07:30 | 49.89162 | -6.31396 | 1.73 | 2.54 | 11.8 | 7.1 | 249 | 47 | 10.9 | 9.2 | 13.56 |
| 17-02-2026 07:00 | 49.89189 | -6.31403 | 2.14 | 3.24 | 8.3 | 7.3 | 225 | 34 | 10.8 | 8.9 | 20 |
| 17-02-2026 06:30 | 49.89144 | -6.31345 | 2.06 | 3.35 | 11.8 | 7.1 | 245 | 58 | 10.8 | 9 | 18.81 |
| 17-02-2026 06:00 | 49.89160 | -6.31356 | 2.18 | 3.35 | 13.3 | 7 | 283 | 59 | 10.8 | 9.2 | 21.51 |
| 17-02-2026 05:30 | 49.89142 | -6.31225 | 1.65 | 2.92 | 11.8 | 6.5 | 295 | 66 | 10.9 | 8.7 | 11.67 |
| 17-02-2026 05:00 | 49.89179 | -6.31154 | 1.57 | 2.33 | 8.3 | 6.1 | 233 | 51 | 10.9 | 8.3 | 10.04 |
| 17-02-2026 04:30 | 49.89259 | -6.31147 | 1.6 | 2.22 | 12.5 | 6.2 | 263 | 60 | 10.9 | 8.3 | 10.4 |
| 17-02-2026 04:00 | 49.89268 | -6.31150 | 1.55 | 2.58 | 11.1 | 5.9 | 305 | 53 | 10.9 | 7.9 | 9.33 |
| 17-02-2026 03:30 | 49.89272 | -6.31147 | 1.46 | 2.77 | 6.7 | 5.6 | 323 | 44 | 10.9 | 7.8 | 8.12 |
| 17-02-2026 03:00 | 49.89276 | -6.31147 | 1.58 | 2.27 | 6.7 | 5.6 | 292 | 50 | 10.9 | 7.7 | 9.46 |
| 17-02-2026 02:30 | 49.89277 | -6.31147 | 1.62 | 2.2 | 8.3 | 5.6 | 259 | 60 | 10.9 | 7.7 | 9.88 |
| 17-02-2026 02:00 | 49.89276 | -6.31141 | 1.53 | 2.46 | 10.5 | 5.6 | 222 | 55 | 10.9 | 7.7 | 8.84 |
| 17-02-2026 01:30 | 49.89280 | -6.31145 | 1.51 | 2.28 | 10 | 5.4 | 243 | 63 | 10.9 | 7.4 | 8.33 |
| 17-02-2026 01:00 | 49.89285 | -6.31152 | 1.51 | 2.52 | 7.1 | 5.3 | 292 | 54 | 10.9 | 7.3 | 8.19 |
| 17-02-2026 00:30 | 49.89290 | -6.31160 | 1.42 | 2.08 | 9.1 | 5.3 | 229 | 54 | 10.9 | 7.5 | 7.37 |
| 17-02-2026 00:00 | 49.89292 | -6.31167 | 1.28 | 2.08 | 7.1 | 5 | 266 | 72 | 10.9 | 6.9 | 5.57 |
