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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17-06-2026 22:00 | 49.89204 | -6.31356 | 0.97 | 1.26 | 10 | 5.5 | 260 | 56 | 13.9 | 6.9 | 3.21 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17-06-2026 22:00 | 49.89204 | -6.31356 | 0.97 | 1.26 | 10 | 5.5 | 260 | 56 | 13.9 | 6.9 | 3.21 |
| 17-06-2026 21:30 | 49.89188 | -6.31362 | 0.93 | 1.21 | 10.5 | 5.4 | 222 | 46 | 13.9 | 7 | 2.95 |
| 17-06-2026 21:00 | 49.89216 | -6.31351 | 0.99 | 1.63 | 9.1 | 5.6 | 229 | 40 | 13.9 | 7.2 | 3.48 |
| 17-06-2026 20:30 | 49.89181 | -6.31343 | 1.08 | 1.83 | 10.5 | 5.6 | 266 | 52 | 13.9 | 7 | 4.03 |
| 17-06-2026 20:00 | 49.89160 | -6.31289 | 1.04 | 1.73 | 10 | 5.3 | 271 | 48 | 13.9 | 6.9 | 3.68 |
| 17-06-2026 19:30 | 49.89172 | -6.31248 | 1 | 1.3 | 10 | 4.8 | 259 | 60 | 13.9 | 6.4 | 3.12 |
| 17-06-2026 19:00 | 49.89172 | -6.31212 | 0.79 | 1.15 | 5.3 | 4.2 | 196 | 35 | 13.9 | 5.6 | 1.71 |
| 17-06-2026 18:30 | 49.89200 | -6.31171 | 0.85 | 1.4 | 10.5 | 4.2 | 319 | 47 | 13.9 | 5.8 | 2.05 |
| 17-06-2026 18:00 | 49.89271 | -6.31156 | 0.83 | 1.46 | 10 | 4.3 | 328 | 36 | 13.9 | 5.9 | 1.99 |
| 17-06-2026 17:30 | 49.89282 | -6.31165 | 0.82 | 1.22 | 9.1 | 4.2 | 323 | 48 | 13.9 | 5.9 | 1.95 |
| 17-06-2026 17:00 | 49.89281 | -6.31154 | 0.85 | 1.32 | 10 | 4.2 | 301 | 55 | 13.9 | 5.6 | 1.97 |
| 17-06-2026 16:30 | 49.89285 | -6.31150 | 0.79 | 1.16 | 10 | 4.2 | 304 | 62 | 13.8 | 5.7 | 1.73 |
| 17-06-2026 16:00 | 49.89289 | -6.31156 | 0.8 | 1.2 | 9.1 | 4.1 | 319 | 54 | 13.9 | 5.4 | 1.7 |
| 17-06-2026 15:30 | 49.89292 | -6.31156 | 0.77 | 1.05 | 10.5 | 4.1 | 328 | 50 | 13.8 | 5.4 | 1.58 |
| 17-06-2026 15:00 | 49.89292 | -6.31147 | 0.78 | 1.37 | 10.5 | 4.1 | 312 | 55 | 13.8 | 5.3 | 1.59 |
| 17-06-2026 14:30 | 49.89295 | -6.31162 | 0.71 | 1.11 | 4 | 3.9 | 177 | 38 | 13.9 | 5 | 1.24 |
| 17-06-2026 14:00 | 49.89296 | -6.31173 | 0.71 | 0.99 | 5 | 3.9 | 188 | 46 | 13.9 | 4.9 | 1.22 |
| 17-06-2026 13:30 | 49.89299 | -6.31190 | 0.7 | 1.02 | 5 | 3.9 | 200 | 39 | 14 | 4.9 | 1.19 |
| 17-06-2026 13:00 | 49.89306 | -6.31212 | 0.68 | 1.12 | 5.9 | 4 | 210 | 39 | 14 | 5.1 | 1.15 |
| 17-06-2026 12:30 | 49.89308 | -6.31231 | 0.68 | 0.99 | 5.9 | 4.2 | 212 | 38 | 14 | 5.4 | 1.23 |
| 17-06-2026 12:00 | 49.89307 | -6.31259 | 0.68 | 1.06 | 7.1 | 4.3 | 215 | 41 | 14 | 5.6 | 1.27 |
| 17-06-2026 11:30 | 49.89307 | -6.31287 | 0.73 | 1.08 | 7.1 | 4.5 | 232 | 48 | 13.9 | 5.9 | 1.54 |
| 17-06-2026 11:00 | 49.89275 | -6.31341 | 0.83 | 1.18 | 5.3 | 4.9 | 224 | 37 | 13.9 | 6.4 | 2.16 |
| 17-06-2026 10:30 | 49.89235 | -6.31360 | 1.02 | 1.76 | 11.1 | 5.5 | 228 | 39 | 13.9 | 7.1 | 3.6 |
| 17-06-2026 10:00 | 49.89211 | -6.31356 | 1.17 | 1.92 | 10.5 | 5.6 | 232 | 43 | 13.9 | 7.1 | 4.8 |
| 17-06-2026 09:30 | 49.89197 | -6.31356 | 1.02 | 1.7 | 10.5 | 5.2 | 246 | 63 | 13.8 | 6.5 | 3.33 |
| 17-06-2026 09:00 | 49.89193 | -6.31347 | 0.97 | 1.42 | 10.5 | 4.9 | 270 | 50 | 13.8 | 6.3 | 2.91 |
| 17-06-2026 08:30 | 49.89212 | -6.31356 | 1.05 | 1.72 | 11.1 | 5.1 | 291 | 51 | 13.8 | 6.8 | 3.66 |
| 17-06-2026 08:00 | 49.89168 | -6.31319 | 1.09 | 1.62 | 10 | 4.9 | 245 | 53 | 13.9 | 6.3 | 3.7 |
| 17-06-2026 07:30 | 49.89168 | -6.31244 | 1.08 | 1.4 | 11.1 | 4.4 | 252 | 59 | 13.8 | 6 | 3.42 |
| 17-06-2026 07:00 | 49.89171 | -6.31225 | 0.92 | 1.33 | 10.5 | 4.1 | 309 | 60 | 13.9 | 5.5 | 2.29 |
| 17-06-2026 06:30 | 49.89202 | -6.31182 | 0.92 | 1.49 | 10.5 | 3.8 | 342 | 41 | 13.9 | 5.4 | 2.22 |
| 17-06-2026 06:00 | 49.89263 | -6.31156 | 0.98 | 1.49 | 5 | 3.9 | 204 | 44 | 13.9 | 5.1 | 2.42 |
| 17-06-2026 05:30 | 49.89278 | -6.31158 | 1.09 | 1.69 | 11.1 | 3.9 | 311 | 41 | 13.8 | 5.1 | 2.98 |
| 17-06-2026 05:00 | 49.89278 | -6.31152 | 1.14 | 1.78 | 4.4 | 3.8 | 194 | 39 | 13.8 | 4.9 | 3.13 |
| 17-06-2026 04:30 | 49.89283 | -6.31156 | 1.12 | 1.99 | 4 | 3.8 | 194 | 38 | 13.8 | 4.9 | 3.03 |
| 17-06-2026 04:00 | 49.89284 | -6.31158 | 1.05 | 1.85 | 4.6 | 3.8 | 210 | 33 | 13.8 | 4.9 | 2.64 |
| 17-06-2026 03:30 | 49.89287 | -6.31152 | 1.01 | 1.52 | 4 | 3.7 | 197 | 34 | 13.8 | 4.8 | 2.38 |
| 17-06-2026 03:00 | 49.89290 | -6.31158 | 0.97 | 1.39 | 4.4 | 3.7 | 207 | 45 | 13.8 | 4.8 | 2.21 |
| 17-06-2026 02:30 | 49.89292 | -6.31167 | 0.94 | 1.53 | 4.6 | 3.6 | 207 | 33 | 13.8 | 4.5 | 1.94 |
| 17-06-2026 02:00 | 49.89298 | -6.31177 | 0.82 | 1.21 | 4.2 | 3.5 | 210 | 41 | 13.8 | 4.3 | 1.42 |
| 17-06-2026 01:30 | 49.89300 | -6.31192 | 0.79 | 1.27 | 4.4 | 3.4 | 208 | 37 | 13.8 | 4.2 | 1.29 |
| 17-06-2026 01:00 | 49.89303 | -6.31201 | 0.75 | 1.21 | 4.2 | 3.4 | 201 | 41 | 13.8 | 4.2 | 1.17 |
| 17-06-2026 00:30 | 49.89308 | -6.31240 | 0.7 | 1.16 | 5 | 3.5 | 214 | 36 | 13.8 | 4.3 | 1.04 |
| 17-06-2026 00:00 | 49.89287 | -6.31321 | 0.66 | 1.19 | 4.6 | 3.6 | 208 | 35 | 13.8 | 4.6 | 0.99 |
| 16-06-2026 23:30 | 49.89254 | -6.31353 | 0.69 | 1.08 | 3.9 | 3.7 | 201 | 36 | 13.8 | 4.8 | 1.13 |
| 16-06-2026 23:00 | 49.89248 | -6.31356 | 0.71 | 1.01 | 10 | 3.8 | 340 | 69 | 13.8 | 5.3 | 1.3 |
| 16-06-2026 22:30 | 49.89246 | -6.31358 | 0.78 | 1.09 | 10.5 | 4 | 255 | 44 | 13.8 | 5.6 | 1.67 |
| 16-06-2026 22:00 | 49.89225 | -6.31356 | 0.85 | 1.23 | 10.5 | 4.3 | 260 | 44 | 13.8 | 6.1 | 2.15 |
