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 11:30 | 49.89278 | -6.31152 | 1.57 | 2.73 | 8.3 | 5.6 | 233 | 52 | 11.1 | 7.6 | 9.23 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 14-01-2025 00:00 | 49.89286 | -6.31186 | 1.27 | - | 5.3 | 4.5 | 179 | 37 | 11.3 | - | - |
| 13-01-2025 23:30 | 49.89286 | -6.31182 | 1.2 | - | 5.9 | 4.4 | 204 | 36 | 11.3 | - | - |
| 13-01-2025 23:00 | 49.89292 | -6.31195 | 1.29 | - | 5.6 | 4.6 | 190 | 34 | 11.3 | - | - |
| 13-01-2025 22:30 | 49.89299 | -6.31225 | 1.25 | - | 5 | 4.6 | 166 | 41 | 11.3 | - | - |
| 13-01-2025 22:00 | 49.89303 | -6.31285 | 1.25 | - | 10.5 | 4.7 | 235 | 43 | 11.3 | - | - |
| 13-01-2025 21:30 | 49.89270 | -6.31377 | 1.44 | - | 12.5 | 5.2 | 236 | 48 | 11.3 | - | - |
| 13-01-2025 21:00 | 49.89209 | -6.31403 | 1.8 | - | 11.8 | 5.9 | 226 | 30 | 11.3 | - | - |
| 13-01-2025 20:30 | 49.89183 | -6.31398 | 2.01 | - | 12.5 | 6.1 | 210 | 36 | 11.3 | - | - |
| 13-01-2025 20:00 | 49.89173 | -6.31396 | 2.04 | - | 10 | 6.2 | 222 | 24 | 11.4 | - | - |
| 13-01-2025 19:30 | 49.89160 | -6.31390 | 2.01 | - | 6.3 | 5.8 | 196 | 34 | 11.3 | - | - |
| 13-01-2025 19:00 | 49.89157 | -6.31381 | 2.04 | - | 11.8 | 5.9 | 263 | 48 | 11.3 | - | - |
| 13-01-2025 18:30 | 49.89133 | -6.31325 | 2.01 | - | 11.8 | 5.7 | 245 | 45 | 11.3 | - | - |
| 13-01-2025 18:00 | 49.89132 | -6.31293 | 2.04 | - | 5.9 | 5.5 | 153 | 35 | 11.3 | - | - |
| 13-01-2025 17:30 | 49.89135 | -6.31229 | 1.78 | - | 5.9 | 5.1 | 174 | 34 | 11.3 | - | - |
| 13-01-2025 17:00 | 49.89188 | -6.31147 | 1.67 | - | 5.9 | 4.8 | 169 | 35 | 11.3 | - | - |
| 13-01-2025 16:30 | 49.89269 | -6.31169 | 1.58 | - | 5.9 | 4.7 | 180 | 46 | 11.3 | - | - |
| 13-01-2025 16:00 | 49.89272 | -6.31171 | 1.61 | - | 5.9 | 4.6 | 179 | 37 | 11.3 | - | - |
| 13-01-2025 15:30 | 49.89267 | -6.31158 | 1.82 | - | 5.6 | 4.7 | 167 | 37 | 11.3 | - | - |
| 13-01-2025 15:00 | 49.89272 | -6.31162 | 1.71 | - | 5.3 | 4.6 | 173 | 39 | 11.3 | - | - |
| 13-01-2025 14:30 | 49.89278 | -6.31165 | 1.78 | - | 5.9 | 4.6 | 194 | 41 | 11.3 | - | - |
| 13-01-2025 14:00 | 49.89279 | -6.31167 | 1.69 | - | 5.9 | 4.6 | 184 | 53 | 11.3 | - | - |
| 13-01-2025 13:30 | 49.89278 | -6.31169 | 1.73 | - | 6.3 | 4.7 | 212 | 41 | 11.3 | - | - |
| 13-01-2025 13:00 | 49.89287 | -6.31182 | 1.82 | - | 5.6 | 4.7 | 196 | 33 | 11.3 | - | - |
| 13-01-2025 12:30 | 49.89296 | -6.31212 | 1.75 | - | 5.6 | 4.6 | 190 | 35 | 11.3 | - | - |
| 13-01-2025 12:00 | 49.89296 | -6.31220 | 1.66 | - | 5.9 | 4.6 | 186 | 28 | 11.3 | - | - |
| 13-01-2025 11:30 | 49.89304 | -6.31276 | 1.63 | - | 6.3 | 4.6 | 200 | 35 | 11.3 | - | - |
| 13-01-2025 11:00 | 49.89298 | -6.31323 | 1.63 | - | 6.7 | 4.7 | 210 | 31 | 11.3 | - | - |
| 13-01-2025 10:30 | 49.89278 | -6.31368 | 1.62 | - | 5.9 | 4.6 | 188 | 37 | 11.3 | - | - |
| 13-01-2025 10:00 | 49.89258 | -6.31388 | 1.6 | - | 5.6 | 4.7 | 174 | 32 | 11.3 | - | - |
| 13-01-2025 09:30 | 49.89237 | -6.31401 | 1.73 | - | 6.7 | 4.9 | 198 | 32 | 11.3 | - | - |
| 13-01-2025 09:00 | 49.89203 | -6.31405 | 1.78 | - | 5.9 | 5.1 | 193 | 36 | 11.3 | - | - |
| 13-01-2025 08:30 | 49.89188 | -6.31401 | 1.79 | - | 6.7 | 5.2 | 207 | 31 | 11.3 | - | - |
| 13-01-2025 08:00 | 49.89177 | -6.31401 | 2.01 | - | 5.9 | 5.5 | 179 | 29 | 11.3 | - | - |
| 13-01-2025 07:30 | 49.89173 | -6.31396 | 2.05 | - | 6.3 | 5.5 | 191 | 37 | 11.3 | - | - |
| 13-01-2025 07:00 | 49.89155 | -6.31392 | 2.2 | - | 6.7 | 5.5 | 201 | 33 | 11.3 | - | - |
| 13-01-2025 06:30 | 49.89167 | -6.31392 | 2.15 | - | 6.7 | 5.4 | 194 | 31 | 11.3 | - | - |
| 13-01-2025 06:00 | 49.89134 | -6.31334 | 2.07 | - | 6.3 | 5.3 | 179 | 29 | 11.3 | - | - |
| 13-01-2025 05:30 | 49.89138 | -6.31313 | 1.91 | - | 6.3 | 4.9 | 179 | 34 | 11.3 | - | - |
| 13-01-2025 05:00 | 49.89146 | -6.31208 | 1.89 | - | 5.9 | 4.8 | 183 | 33 | 11.3 | - | - |
| 13-01-2025 04:30 | 49.89269 | -6.31197 | 1.85 | - | 5.9 | 4.7 | 174 | 36 | 11.3 | - | - |
| 13-01-2025 04:00 | 49.89280 | -6.31184 | 1.72 | - | 5.9 | 4.6 | 176 | 39 | 11.4 | - | - |
| 13-01-2025 03:30 | 49.89274 | -6.31167 | 1.73 | - | 6.3 | 4.7 | 173 | 41 | 11.3 | - | - |
| 13-01-2025 03:00 | 49.89272 | -6.31160 | 1.89 | - | 5.9 | 4.6 | 180 | 36 | 11.3 | - | - |
| 13-01-2025 02:30 | 49.89278 | -6.31167 | 1.78 | - | 5.6 | 4.5 | 191 | 42 | 11.3 | - | - |
| 13-01-2025 02:00 | 49.89272 | -6.31160 | 1.86 | - | 5.6 | 4.6 | 170 | 31 | 11.3 | - | - |
| 13-01-2025 01:30 | 49.89279 | -6.31167 | 1.94 | - | 5.9 | 4.7 | 188 | 33 | 11.3 | - | - |
| 13-01-2025 01:00 | 49.89281 | -6.31171 | 1.91 | - | 5.9 | 4.6 | 180 | 30 | 11.3 | - | - |
| 13-01-2025 00:30 | 49.89289 | -6.31188 | 1.78 | - | 5.6 | 4.5 | 176 | 30 | 11.3 | - | - |
| 13-01-2025 00:00 | 49.89289 | -6.31192 | 1.77 | - | 5.6 | 4.5 | 179 | 31 | 11.3 | - | - |
