National Network of Regional Coastal Monitoring Programmes
« Return to map for other wave, tide and met stations.
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20-01-2026 11:00 | 49.89208 | -6.31401 | 2.98 | 4.88 | 9.1 | 6.8 | 201 | 25 | 11 | 8.3 | 36.06 |
| Date | Highest Hs 2026 | Storm Alert Threshold (0.25 yr Return Period Hs) |
Swell Alert Threshold (0.25 yr Return Period Te) |
|---|---|---|---|
| 08-01 | 5.3m | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-01-2025 00:00 | 49.89271 | -6.31171 | 1.63 | - | 11.8 | 5.4 | 218 | 45 | 11.2 | - | - |
| 09-01-2025 23:30 | 49.89269 | -6.31160 | 1.74 | - | 11.8 | 6 | 212 | 31 | 11.2 | - | - |
| 09-01-2025 23:00 | 49.89271 | -6.31167 | 1.6 | - | 11.1 | 6 | 232 | 41 | 11.2 | - | - |
| 09-01-2025 22:30 | 49.89279 | -6.31175 | 1.63 | - | 11.8 | 6.2 | 219 | 45 | 11.2 | - | - |
| 09-01-2025 22:00 | 49.89275 | -6.31171 | 1.6 | - | 10.5 | 6.1 | 222 | 34 | 11.2 | - | - |
| 09-01-2025 21:30 | 49.89292 | -6.31212 | 1.7 | - | 10 | 6.4 | 218 | 28 | 11.2 | - | - |
| 09-01-2025 21:00 | 49.89304 | -6.31263 | 1.7 | - | 11.8 | 6.5 | 214 | 41 | 11.2 | - | - |
| 09-01-2025 20:30 | 49.89304 | -6.31265 | 1.7 | - | 11.1 | 6.5 | 211 | 41 | 11.3 | - | - |
| 09-01-2025 20:00 | 49.89303 | -6.31268 | 1.67 | - | 12.5 | 6.7 | 206 | 28 | 11.2 | - | - |
| 09-01-2025 19:30 | 49.89304 | -6.31276 | 1.43 | - | 10.5 | 6.6 | 217 | 31 | 11.2 | - | - |
| 09-01-2025 19:00 | 49.89279 | -6.31353 | 1.67 | - | 11.1 | 7.9 | 211 | 38 | 11.2 | - | - |
| 09-01-2025 18:30 | 49.89219 | -6.31396 | 1.63 | - | 12.5 | 8.1 | 215 | 41 | 11.3 | - | - |
| 09-01-2025 18:00 | 49.89196 | -6.31396 | 1.67 | - | 11.1 | 8.6 | 215 | 35 | 11.3 | - | - |
| 09-01-2025 17:30 | 49.89182 | -6.31392 | 1.98 | - | 11.8 | 9 | 215 | 23 | 11.3 | - | - |
| 09-01-2025 17:00 | 49.89176 | -6.31388 | 1.86 | - | 11.8 | 8.8 | 214 | 31 | 11.4 | - | - |
| 09-01-2025 16:30 | 49.89175 | -6.31390 | 2.1 | - | 12.5 | 9.1 | 218 | 34 | 11.4 | - | - |
| 09-01-2025 16:00 | 49.89164 | -6.31383 | 2.02 | - | 11.1 | 8.9 | 212 | 35 | 11.3 | - | - |
| 09-01-2025 15:30 | 49.89162 | -6.31377 | 1.98 | - | 11.8 | 8.9 | 210 | 35 | 11.2 | - | - |
| 09-01-2025 15:00 | 49.89146 | -6.31353 | 1.82 | - | 11.8 | 8.4 | 205 | 38 | 11.3 | - | - |
| 09-01-2025 14:30 | 49.89156 | -6.31356 | 2.02 | - | 12.5 | 8.6 | 213 | 49 | 11.2 | - | - |
| 09-01-2025 14:00 | 49.89138 | -6.31229 | 2.02 | - | 12.5 | 8.3 | 226 | 41 | 11.2 | - | - |
| 09-01-2025 13:30 | 49.89152 | -6.31265 | 2.02 | - | 12.5 | 8.1 | 205 | 23 | 11.3 | - | - |
| 09-01-2025 13:00 | 49.89223 | -6.31147 | 1.98 | - | 11.1 | 7.9 | 204 | 28 | 11.4 | - | - |
| 09-01-2025 12:30 | 49.89236 | -6.31145 | 1.86 | - | 11.8 | 7.9 | 202 | 41 | 11.4 | - | - |
| 09-01-2025 12:00 | 49.89247 | -6.31150 | 2.19 | - | 12.5 | 8.1 | 218 | 28 | 11.3 | - | - |
| 09-01-2025 11:30 | 49.89259 | -6.31154 | 2.1 | - | 11.1 | 7.8 | 210 | 38 | 11.3 | - | - |
| 09-01-2025 11:00 | 49.89250 | -6.31147 | 2.1 | - | 11.8 | 7.8 | 232 | 23 | 11.3 | - | - |
| 09-01-2025 10:30 | 49.89255 | -6.31152 | 2.1 | - | 11.1 | 7.8 | 208 | 29 | 11.3 | - | - |
| 09-01-2025 10:00 | 49.89255 | -6.31156 | 2.06 | - | 11.8 | 7.6 | 204 | 28 | 11.3 | - | - |
| 09-01-2025 09:30 | 49.89267 | -6.31167 | 2.28 | - | 11.1 | 7.9 | 205 | 31 | 11.3 | - | - |
| 09-01-2025 09:00 | 49.89271 | -6.31169 | 2.02 | - | 12.5 | 7.2 | 207 | 23 | 11.3 | - | - |
| 09-01-2025 08:30 | 49.89286 | -6.31212 | 2.02 | - | 11.8 | 6.9 | 201 | 28 | 11.4 | - | - |
| 09-01-2025 08:00 | 49.89241 | -6.31351 | 2.37 | - | 11.1 | 7.6 | 208 | 29 | 11.4 | - | - |
| 09-01-2025 07:30 | 49.89200 | -6.31388 | 2.1 | - | 11.8 | 7.3 | 214 | 35 | 11.4 | - | - |
| 09-01-2025 07:00 | 49.89192 | -6.31394 | 2.19 | - | 11.8 | 7.8 | 212 | 26 | 11.4 | - | - |
| 09-01-2025 06:30 | 49.89178 | -6.31390 | 2.24 | - | 11.8 | 7.4 | 215 | 31 | 11.4 | - | - |
| 09-01-2025 06:00 | 49.89171 | -6.31386 | 2.28 | - | 11.1 | 7.6 | 207 | 29 | 11.4 | - | - |
| 09-01-2025 05:30 | 49.89168 | -6.31388 | 2.15 | - | 11.8 | 7.3 | 219 | 31 | 11.3 | - | - |
| 09-01-2025 05:00 | 49.89173 | -6.31388 | 2.33 | - | 11.8 | 7.4 | 210 | 31 | 11.4 | - | - |
| 09-01-2025 04:30 | 49.89173 | -6.31390 | 2.1 | - | 11.1 | 6.9 | 212 | 45 | 11.4 | - | - |
| 09-01-2025 04:00 | 49.89168 | -6.31386 | 2.47 | - | 11.1 | 7.3 | 201 | 28 | 11.4 | - | - |
| 09-01-2025 03:30 | 49.89166 | -6.31381 | 2.42 | - | 11.1 | 6.9 | 202 | 49 | 11.4 | - | - |
| 09-01-2025 03:00 | 49.89163 | -6.31379 | 2.42 | - | 11.8 | 6.8 | 208 | 23 | 11.4 | - | - |
| 09-01-2025 02:30 | 49.89161 | -6.31377 | 2.83 | - | 11.8 | 7.2 | 207 | 28 | 11.4 | - | - |
| 09-01-2025 02:00 | 49.89136 | -6.31328 | 2.67 | - | 11.8 | 6.7 | 204 | 34 | 11.2 | - | - |
| 09-01-2025 01:30 | 49.89142 | -6.31330 | 2.94 | - | 11.8 | 7 | 201 | 35 | 11.2 | - | - |
| 09-01-2025 01:00 | 49.89143 | -6.31338 | 2.88 | - | 11.1 | 6.9 | 200 | 31 | 11.2 | - | - |
| 09-01-2025 00:30 | 49.89147 | -6.31300 | 3.17 | - | 11.1 | 7.1 | 198 | 23 | 11.2 | - | - |
| 09-01-2025 00:00 | 49.89226 | -6.31205 | 2.88 | - | 10.5 | 6.7 | 195 | 35 | 11.4 | - | - |
