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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12-09-2026 07:30 | 49.89190 | -6.31362 | 0.92 | - | 4.7 | 4.6 | 238 | 31 | 16.5 | - | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16-06-2026 00:00 | 49.89300 | -6.31283 | 0.41 | 0.6 | 5 | 3.5 | 290 | 51 | 13.9 | 4.7 | 0.39 |
| 15-06-2026 23:30 | 49.89262 | -6.31349 | 0.38 | 0.57 | 5 | 3.5 | 297 | 61 | 13.9 | 4.9 | 0.35 |
| 15-06-2026 23:00 | 49.89237 | -6.31351 | 0.41 | 0.6 | 5.3 | 3.6 | 300 | 55 | 13.9 | 5.1 | 0.42 |
| 15-06-2026 22:30 | 49.89232 | -6.31353 | 0.43 | 0.58 | 4.3 | 3.7 | 259 | 64 | 13.9 | 5.1 | 0.46 |
| 15-06-2026 22:00 | 49.89238 | -6.31356 | 0.46 | 0.84 | 5.6 | 3.7 | 252 | 47 | 13.9 | 5.2 | 0.54 |
| 15-06-2026 21:30 | 49.89227 | -6.31353 | 0.55 | 0.86 | 9.1 | 4.5 | 239 | 36 | 13.8 | 6.4 | 0.95 |
| 15-06-2026 21:00 | 49.89216 | -6.31353 | 0.57 | 0.95 | 5.6 | 4.7 | 243 | 47 | 13.8 | 6.2 | 0.98 |
| 15-06-2026 20:30 | 49.89208 | -6.31356 | 0.54 | 0.79 | 9.1 | 4.7 | 221 | 59 | 13.8 | 6.3 | 0.9 |
| 15-06-2026 20:00 | 49.89195 | -6.31347 | 0.49 | 0.69 | 5.3 | 4.4 | 239 | 38 | 13.8 | 6.2 | 0.73 |
| 15-06-2026 19:30 | 49.89221 | -6.31353 | 0.64 | 1 | 9.1 | 5.3 | 222 | 28 | 13.8 | 7.2 | 1.45 |
| 15-06-2026 19:00 | 49.89175 | -6.31336 | 0.79 | 1.32 | 10 | 5.4 | 222 | 36 | 13.8 | 6.9 | 2.12 |
| 15-06-2026 18:30 | 49.89164 | -6.31328 | 0.63 | 0.93 | 9.1 | 5 | 239 | 48 | 13.8 | 6.6 | 1.28 |
| 15-06-2026 18:00 | 49.89183 | -6.31304 | 0.64 | 1.07 | 5.3 | 4.5 | 217 | 34 | 13.8 | 5.9 | 1.18 |
| 15-06-2026 17:30 | 49.89174 | -6.31259 | 0.54 | 0.86 | 4.5 | 4 | 210 | 42 | 13.8 | 5.2 | 0.75 |
| 15-06-2026 17:00 | 49.89174 | -6.31214 | 0.49 | 0.69 | 10 | 4 | 309 | 56 | 13.8 | 5.7 | 0.67 |
| 15-06-2026 16:30 | 49.89280 | -6.31173 | 0.53 | 0.8 | 4.3 | 3.9 | 232 | 73 | 13.8 | 5.2 | 0.72 |
| 15-06-2026 16:00 | 49.89277 | -6.31162 | 0.5 | 0.71 | 4.5 | 3.9 | 256 | 79 | 13.8 | 5.4 | 0.66 |
| 15-06-2026 15:30 | 49.89279 | -6.31154 | 0.53 | 0.77 | 4.5 | 4 | 231 | 64 | 13.8 | 5.5 | 0.76 |
| 15-06-2026 15:00 | 49.89284 | -6.31154 | 0.51 | 0.69 | 5 | 4 | 314 | 46 | 13.8 | 5.4 | 0.69 |
| 15-06-2026 14:30 | 49.89291 | -6.31154 | 0.49 | 0.68 | 5 | 4 | 281 | 53 | 13.8 | 5.3 | 0.62 |
| 15-06-2026 14:00 | 49.89292 | -6.31152 | 0.47 | 0.67 | 5 | 4.1 | 269 | 61 | 13.8 | 5.5 | 0.59 |
| 15-06-2026 13:30 | 49.89290 | -6.31147 | 0.43 | 0.75 | 4.8 | 4.1 | 211 | 61 | 13.8 | 5.5 | 0.5 |
| 15-06-2026 13:00 | 49.89291 | -6.31147 | 0.43 | 0.59 | 4.8 | 3.9 | 191 | 64 | 13.8 | 5.2 | 0.47 |
| 15-06-2026 12:30 | 49.89290 | -6.31160 | 0.45 | 0.68 | 4.8 | 3.7 | 153 | 68 | 13.8 | 4.9 | 0.48 |
| 15-06-2026 12:00 | 49.89292 | -6.31169 | 0.49 | 0.75 | 4.5 | 3.7 | 146 | 62 | 13.8 | 4.7 | 0.55 |
| 15-06-2026 11:30 | 49.89295 | -6.31182 | 0.48 | 0.77 | 4.8 | 3.8 | 217 | 65 | 13.8 | 4.8 | 0.55 |
| 15-06-2026 11:00 | 49.89294 | -6.31190 | 0.55 | 0.86 | 4.3 | 3.9 | 240 | 75 | 13.8 | 4.8 | 0.72 |
| 15-06-2026 10:30 | 49.89300 | -6.31222 | 0.59 | 0.87 | 5.3 | 4 | 224 | 53 | 13.8 | 4.8 | 0.82 |
| 15-06-2026 10:00 | 49.89296 | -6.31295 | 0.64 | 1.12 | 5 | 4.2 | 249 | 41 | 13.8 | 5.1 | 1.03 |
| 15-06-2026 09:30 | 49.89261 | -6.31343 | 0.65 | 0.91 | 5 | 4.2 | 221 | 41 | 13.7 | 5.2 | 1.08 |
| 15-06-2026 09:00 | 49.89223 | -6.31353 | 0.7 | 1.18 | 5 | 4.3 | 224 | 41 | 13.7 | 5.5 | 1.31 |
| 15-06-2026 08:30 | 49.89211 | -6.31356 | 0.73 | 1.09 | 5 | 4.4 | 210 | 38 | 13.8 | 5.4 | 1.42 |
| 15-06-2026 08:00 | 49.89198 | -6.31353 | 0.74 | 1.12 | 4.8 | 4.3 | 212 | 35 | 13.8 | 5.3 | 1.44 |
| 15-06-2026 07:30 | 49.89191 | -6.31349 | 0.68 | 0.9 | 5 | 4.2 | 197 | 38 | 13.8 | 5.3 | 1.19 |
| 15-06-2026 07:00 | 49.89204 | -6.31347 | 0.64 | 0.89 | 4.8 | 4.1 | 193 | 44 | 13.8 | 5.5 | 1.1 |
| 15-06-2026 06:30 | 49.89174 | -6.31319 | 0.74 | 0.92 | 4.2 | 4.3 | 205 | 34 | 13.8 | 5.5 | 1.47 |
| 15-06-2026 06:00 | 49.89157 | -6.31268 | 0.72 | 1.16 | 4.8 | 4.2 | 139 | 48 | 13.8 | 5.4 | 1.38 |
| 15-06-2026 05:30 | 49.89168 | -6.31233 | 0.69 | 0.96 | 5 | 4 | 129 | 54 | 13.8 | 5.2 | 1.21 |
| 15-06-2026 05:00 | 49.89172 | -6.31231 | 0.69 | 1.03 | 5 | 3.9 | 114 | 44 | 13.8 | 5.1 | 1.19 |
| 15-06-2026 04:30 | 49.89204 | -6.31160 | 0.76 | 1.11 | 5 | 4 | 100 | 43 | 13.8 | 5.1 | 1.44 |
| 15-06-2026 04:00 | 49.89253 | -6.31152 | 0.8 | 1.25 | 5 | 4 | 91 | 40 | 13.9 | 5.1 | 1.61 |
| 15-06-2026 03:30 | 49.89271 | -6.31152 | 0.85 | 1.35 | 5.3 | 4.1 | 93 | 42 | 13.8 | 5.1 | 1.82 |
| 15-06-2026 03:00 | 49.89280 | -6.31154 | 0.88 | 1.17 | 5 | 4.1 | 104 | 39 | 13.8 | 5 | 1.9 |
| 15-06-2026 02:30 | 49.89285 | -6.31154 | 0.89 | 1.44 | 5 | 4.2 | 114 | 40 | 13.7 | 5.1 | 1.97 |
| 15-06-2026 02:00 | 49.89286 | -6.31152 | 0.87 | 1.27 | 4.8 | 4.2 | 111 | 40 | 13.8 | 5.1 | 1.89 |
| 15-06-2026 01:30 | 49.89289 | -6.31158 | 0.88 | 1.49 | 5 | 4.2 | 115 | 40 | 13.8 | 5.1 | 1.93 |
| 15-06-2026 01:00 | 49.89290 | -6.31160 | 0.92 | 1.3 | 4.8 | 4.2 | 122 | 32 | 13.8 | 4.9 | 2.02 |
| 15-06-2026 00:30 | 49.89295 | -6.31173 | 0.98 | 1.68 | 5 | 4 | 122 | 33 | 13.8 | 4.6 | 2.16 |
| 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 |
