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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 22-04-2026 10:30 | 49.89167 | -6.31394 | 3.13 | 4.52 | 9.1 | 6.1 | 98 | 22 | 11.3 | 7.3 | 34.94 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10-12-2024 00:00 | 49.89138 | -6.31267 | 1.86 | - | 8.3 | 5.2 | 122 | 23 | 12.4 | - | - |
| 09-12-2024 23:30 | 49.89169 | -6.31177 | 1.74 | - | 8.3 | 5.2 | 122 | 23 | 12.4 | - | - |
| 09-12-2024 23:00 | 49.89196 | -6.31158 | 1.94 | - | 7.1 | 5.1 | 93 | 26 | 12.3 | - | - |
| 09-12-2024 22:30 | 49.89262 | -6.31158 | 1.78 | - | 7.1 | 4.9 | 94 | 28 | 12.4 | - | - |
| 09-12-2024 22:00 | 49.89264 | -6.31162 | 1.78 | - | 8 | 5.1 | 86 | 26 | 12.4 | - | - |
| 09-12-2024 21:30 | 49.89269 | -6.31167 | 1.78 | - | 7.1 | 5.2 | 91 | 21 | 12.4 | - | - |
| 09-12-2024 21:00 | 49.89272 | -6.31173 | 1.78 | - | 8 | 5.2 | 96 | 23 | 12.4 | - | - |
| 09-12-2024 20:30 | 49.89277 | -6.31186 | 1.86 | - | 7.7 | 5.3 | 96 | 23 | 12.4 | - | - |
| 09-12-2024 20:00 | 49.89282 | -6.31201 | 1.78 | - | 6.9 | 5.2 | 84 | 23 | 12.4 | - | - |
| 09-12-2024 19:30 | 49.89279 | -6.31304 | 1.74 | - | 7.1 | 4.9 | 93 | 28 | 12.4 | - | - |
| 09-12-2024 19:00 | 49.89222 | -6.31394 | 1.7 | - | 6.9 | 4.8 | 87 | 28 | 12.4 | - | - |
| 09-12-2024 18:30 | 49.89183 | -6.31394 | 1.74 | - | 6.2 | 5.1 | 90 | 23 | 12.4 | - | - |
| 09-12-2024 18:00 | 49.89178 | -6.31392 | 1.7 | - | 8.3 | 5 | 122 | 23 | 12.4 | - | - |
| 09-12-2024 17:30 | 49.89175 | -6.31394 | 1.67 | - | 8.3 | 5.1 | 120 | 23 | 12.4 | - | - |
| 09-12-2024 17:00 | 49.89191 | -6.31398 | 1.46 | - | 7.1 | 4.8 | 98 | 26 | 12.4 | - | - |
| 09-12-2024 16:30 | 49.89182 | -6.31396 | 1.53 | - | 8.7 | 4.9 | 128 | 23 | 12.4 | - | - |
| 09-12-2024 16:00 | 49.89177 | -6.31396 | 1.53 | - | 8.7 | 5 | 108 | 28 | 12.4 | - | - |
| 09-12-2024 15:30 | 49.89166 | -6.31394 | 1.33 | - | 7.7 | 4.8 | 104 | 28 | 12.4 | - | - |
| 09-12-2024 15:00 | 49.89169 | -6.31398 | 1.6 | - | 8.3 | 5.4 | 104 | 23 | 12.4 | - | - |
| 09-12-2024 14:30 | 49.89167 | -6.31390 | 1.53 | - | 7.7 | 5 | 96 | 26 | 12.4 | - | - |
| 09-12-2024 14:00 | 49.89163 | -6.31386 | 1.39 | - | 8.3 | 4.6 | 104 | 34 | 12.4 | - | - |
| 09-12-2024 13:30 | 49.89165 | -6.31388 | 1.24 | - | 7.7 | 4.3 | 111 | 34 | 12.4 | - | - |
| 09-12-2024 13:00 | 49.89147 | -6.31366 | 1.3 | - | 7.4 | 4.8 | 98 | 34 | 12.4 | - | - |
| 09-12-2024 12:30 | 49.89146 | -6.31353 | 1.39 | - | 5.9 | 4.6 | 89 | 31 | 12.2 | - | - |
| 09-12-2024 12:00 | 49.89136 | -6.31317 | 1.36 | - | 8.7 | 4.7 | 122 | 28 | 12.3 | - | - |
| 09-12-2024 11:30 | 49.89134 | -6.31242 | 1.43 | - | 8 | 4.8 | 96 | 31 | 12.2 | - | - |
| 09-12-2024 11:00 | 49.89196 | -6.31180 | 1.49 | - | 5.9 | 4.9 | 91 | 26 | 12.4 | - | - |
| 09-12-2024 10:30 | 49.89242 | -6.31156 | 1.49 | - | 6.7 | 4.9 | 115 | 23 | 12.4 | - | - |
| 09-12-2024 10:00 | 49.89236 | -6.31152 | 1.46 | - | 6.5 | 4.8 | 107 | 34 | 12.4 | - | - |
| 09-12-2024 09:30 | 49.89237 | -6.31147 | 1.53 | - | 6.7 | 4.9 | 84 | 28 | 12.3 | - | - |
| 09-12-2024 09:00 | 49.89258 | -6.31160 | 1.53 | - | 6.5 | 5 | 108 | 28 | 12.4 | - | - |
| 09-12-2024 08:30 | 49.89269 | -6.31173 | 1.53 | - | 7.7 | 5 | 101 | 23 | 12.4 | - | - |
| 09-12-2024 08:00 | 49.89276 | -6.31180 | 1.53 | - | 7.4 | 4.9 | 86 | 34 | 12.4 | - | - |
| 09-12-2024 07:30 | 49.89281 | -6.31192 | 1.46 | - | 7.4 | 4.9 | 82 | 34 | 12.4 | - | - |
| 09-12-2024 07:00 | 49.89279 | -6.31199 | 1.46 | - | 6.9 | 4.7 | 80 | 34 | 12.4 | - | - |
| 09-12-2024 06:30 | 49.89278 | -6.31293 | 1.33 | - | 7.7 | 4.6 | 86 | 38 | 12.4 | - | - |
| 09-12-2024 06:00 | 49.89222 | -6.31388 | 1.33 | - | 6.5 | 4.6 | 105 | 34 | 12.4 | - | - |
| 09-12-2024 05:30 | 49.89194 | -6.31398 | 1.3 | - | 7.4 | 4.6 | 84 | 38 | 12.4 | - | - |
| 09-12-2024 05:00 | 49.89180 | -6.31394 | 1.3 | - | 6.9 | 4.5 | 76 | 34 | 12.4 | - | - |
| 09-12-2024 04:30 | 49.89177 | -6.31394 | 1.21 | - | 7.4 | 4.3 | 80 | 38 | 12.4 | - | - |
| 09-12-2024 04:00 | 49.89177 | -6.31396 | 1.18 | - | 7.7 | 4.3 | 94 | 45 | 12.4 | - | - |
| 09-12-2024 03:30 | 49.89173 | -6.31396 | 1.15 | - | 6.9 | 4.3 | 107 | 34 | 12.4 | - | - |
| 09-12-2024 03:00 | 49.89169 | -6.31396 | 1.18 | - | 8 | 4.3 | 77 | 49 | 12.4 | - | - |
| 09-12-2024 02:30 | 49.89175 | -6.31398 | 1.18 | - | 7.7 | 4.3 | 80 | 45 | 12.4 | - | - |
| 09-12-2024 02:00 | 49.89159 | -6.31377 | 1.1 | - | 9.1 | 4.2 | 68 | 57 | 12.4 | - | - |
| 09-12-2024 01:30 | 49.89165 | -6.31383 | 1.07 | - | 7.1 | 3.9 | 86 | 58 | 12.4 | - | - |
| 09-12-2024 01:00 | 49.89164 | -6.31386 | 0.99 | - | 7.7 | 3.8 | 56 | 67 | 12.4 | - | - |
| 09-12-2024 00:30 | 49.89143 | -6.31360 | 1.1 | - | 10 | 4.3 | 124 | 68 | 12.4 | - | - |
| 09-12-2024 00:00 | 49.89151 | -6.31358 | 1.12 | - | 9.1 | 3.9 | 124 | 67 | 12.2 | - | - |
