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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-03-2026 23:30 | 49.89152 | -6.31347 | 1.91 | 3.35 | 7.1 | 5.6 | 203 | 32 | 11.1 | 7 | 12.54 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16-07-2025 00:00 | 49.89171 | -6.31405 | 1.19 | - | 7.7 | 5.8 | 228 | 39 | 16.4 | - | - |
| 15-07-2025 23:30 | 49.89158 | -6.31407 | 1.19 | - | 6.3 | 5.6 | 214 | 30 | 16.1 | - | - |
| 15-07-2025 23:00 | 49.89146 | -6.31398 | 1.13 | - | 7.7 | 5.4 | 253 | 51 | 15.7 | - | - |
| 15-07-2025 22:30 | 49.89161 | -6.31390 | 1.18 | - | 6.7 | 5.3 | 219 | 39 | 15.7 | - | - |
| 15-07-2025 22:00 | 49.89137 | -6.31379 | 1.32 | - | 7.1 | 5.3 | 238 | 46 | 16.1 | - | - |
| 15-07-2025 21:30 | 49.89138 | -6.31349 | 1.3 | - | 7.7 | 5.4 | 263 | 56 | 15.6 | - | - |
| 15-07-2025 21:00 | 49.89132 | -6.31276 | 1.23 | - | 7.1 | 5.1 | 267 | 62 | 16.5 | - | - |
| 15-07-2025 20:30 | 49.89223 | -6.31173 | 1.32 | - | 9.1 | 5.1 | 312 | 48 | 16.4 | - | - |
| 15-07-2025 20:00 | 49.89249 | -6.31156 | 1.24 | - | 7.7 | 4.9 | 274 | 54 | 16.5 | - | - |
| 15-07-2025 19:30 | 49.89256 | -6.31162 | 1.32 | - | 10.5 | 5 | 335 | 35 | 16.5 | - | - |
| 15-07-2025 19:00 | 49.89252 | -6.31154 | 1.26 | - | 10 | 4.9 | 336 | 41 | 16.7 | - | - |
| 15-07-2025 18:30 | 49.89254 | -6.31158 | 1.31 | - | 6.7 | 4.9 | 290 | 58 | 16.6 | - | - |
| 15-07-2025 18:00 | 49.89263 | -6.31165 | 1.33 | - | 6.7 | 4.9 | 300 | 51 | 16.7 | - | - |
| 15-07-2025 17:30 | 49.89262 | -6.31162 | 1.3 | - | 6.7 | 4.9 | 277 | 58 | 16.6 | - | - |
| 15-07-2025 17:00 | 49.89261 | -6.31167 | 1.29 | - | 6.7 | 4.7 | 257 | 60 | 16 | - | - |
| 15-07-2025 16:30 | 49.89264 | -6.31175 | 1.26 | - | 6.7 | 4.7 | 246 | 53 | 16.2 | - | - |
| 15-07-2025 16:00 | 49.89270 | -6.31188 | 1.26 | - | 5.9 | 4.7 | 225 | 42 | 16.4 | - | - |
| 15-07-2025 15:30 | 49.89278 | -6.31205 | 1.25 | - | 5.9 | 4.9 | 221 | 38 | 16.3 | - | - |
| 15-07-2025 15:00 | 49.89280 | -6.31205 | 1.04 | - | 7.7 | 4.7 | 256 | 58 | 16 | - | - |
| 15-07-2025 14:30 | 49.89289 | -6.31231 | 1.04 | - | 5.9 | 4.6 | 205 | 60 | 15.6 | - | - |
| 15-07-2025 14:00 | 49.89293 | -6.31263 | 1 | - | 10.5 | 4.5 | 170 | 79 | 15.6 | - | - |
| 15-07-2025 13:30 | 49.89247 | -6.31368 | 1.11 | - | 6.7 | 5 | 208 | 50 | 15.5 | - | - |
| 15-07-2025 13:00 | 49.89183 | -6.31398 | 1.23 | - | 11.1 | 5.4 | 332 | 44 | 15.8 | - | - |
| 15-07-2025 12:30 | 49.89172 | -6.31398 | 1.32 | - | 10 | 5.5 | 263 | 53 | 15.9 | - | - |
| 15-07-2025 12:00 | 49.89172 | -6.31401 | 1.63 | - | 7.1 | 5.8 | 229 | 24 | 16 | - | - |
| 15-07-2025 11:30 | 49.89167 | -6.31398 | 1.74 | - | 7.1 | 5.7 | 241 | 36 | 15.5 | - | - |
| 15-07-2025 11:00 | 49.89152 | -6.31398 | 1.64 | - | 7.1 | 5.6 | 229 | 35 | 15.2 | - | - |
| 15-07-2025 10:30 | 49.89151 | -6.31403 | 1.74 | - | 7.1 | 5.8 | 226 | 31 | 15.2 | - | - |
| 15-07-2025 10:00 | 49.89144 | -6.31383 | 1.78 | - | 7.1 | 5.5 | 229 | 40 | 14.8 | - | - |
| 15-07-2025 09:30 | 49.89115 | -6.31349 | 2.03 | - | 7.7 | 5.9 | 241 | 36 | 15 | - | - |
| 15-07-2025 09:00 | 49.89133 | -6.31347 | 1.9 | - | 6.7 | 5.4 | 226 | 26 | 15.1 | - | - |
| 15-07-2025 08:30 | 49.89114 | -6.31283 | 1.6 | - | 7.1 | 5.1 | 224 | 41 | 15 | - | - |
| 15-07-2025 08:00 | 49.89129 | -6.31220 | 1.48 | - | 10.5 | 4.9 | 328 | 49 | 15.1 | - | - |
| 15-07-2025 07:30 | 49.89231 | -6.31147 | 1.46 | - | 9.1 | 5 | 301 | 47 | 15.1 | - | - |
| 15-07-2025 07:00 | 49.89254 | -6.31162 | 1.44 | - | 8.3 | 4.9 | 291 | 48 | 15.1 | - | - |
| 15-07-2025 06:30 | 49.89252 | -6.31156 | 1.4 | - | 6.7 | 4.8 | 287 | 56 | 15.1 | - | - |
| 15-07-2025 06:00 | 49.89258 | -6.31158 | 1.42 | - | 6.7 | 4.8 | 286 | 52 | 15.2 | - | - |
| 15-07-2025 05:30 | 49.89258 | -6.31154 | 1.44 | - | 9.1 | 4.8 | 309 | 51 | 15.3 | - | - |
| 15-07-2025 05:00 | 49.89261 | -6.31156 | 1.37 | - | 6.7 | 4.8 | 270 | 63 | 15 | - | - |
| 15-07-2025 04:30 | 49.89255 | -6.31154 | 1.28 | - | 6.3 | 4.8 | 252 | 58 | 15 | - | - |
| 15-07-2025 04:00 | 49.89256 | -6.31160 | 1.29 | - | 6.7 | 4.8 | 235 | 51 | 15.1 | - | - |
| 15-07-2025 03:30 | 49.89258 | -6.31165 | 1.16 | - | 6.3 | 4.9 | 218 | 50 | 15 | - | - |
| 15-07-2025 03:00 | 49.89267 | -6.31177 | 1.1 | - | 6.7 | 4.7 | 210 | 44 | 15.1 | - | - |
| 15-07-2025 02:30 | 49.89279 | -6.31199 | 1.04 | - | 7.1 | 4.5 | 208 | 47 | 15.1 | - | - |
| 15-07-2025 02:00 | 49.89283 | -6.31308 | 1.05 | - | 8.3 | 4.6 | 219 | 64 | 15.2 | - | - |
| 15-07-2025 01:30 | 49.89223 | -6.31392 | 1.13 | - | 7.1 | 4.9 | 219 | 40 | 15.3 | - | - |
| 15-07-2025 01:00 | 49.89195 | -6.31405 | 1.24 | - | 10 | 5.1 | 242 | 56 | 15.3 | - | - |
| 15-07-2025 00:30 | 49.89179 | -6.31403 | 1.44 | - | 10.5 | 5.3 | 266 | 58 | 15.5 | - | - |
| 15-07-2025 00:00 | 49.89169 | -6.31401 | 1.66 | - | 10 | 6 | 236 | 40 | 15.5 | - | - |
