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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 08-06-2026 04:00 | 49.89209 | -6.31345 | 1.22 | 2 | 11.1 | 4.9 | 253 | 55 | 13.7 | 6.3 | 4.59 |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 21-04-2026 00:00 | 49.89205 | -6.31407 | 2.24 | 3.64 | 6.7 | 5 | 117 | 20 | 11.2 | 5.8 | 14.36 |
| 20-04-2026 23:30 | 49.89244 | -6.31407 | 2.02 | 2.94 | 6.7 | 4.9 | 124 | 24 | 11.2 | 5.8 | 11.52 |
| 20-04-2026 23:00 | 49.89224 | -6.31409 | 1.76 | 2.97 | 7.1 | 4.7 | 125 | 23 | 11.2 | 5.8 | 8.82 |
| 20-04-2026 22:30 | 49.89202 | -6.31405 | 1.65 | 2.49 | 6.7 | 4.8 | 127 | 21 | 11.2 | 5.9 | 7.92 |
| 20-04-2026 22:00 | 49.89182 | -6.31403 | 1.56 | 2.67 | 6.7 | 4.7 | 121 | 19 | 11.2 | 5.9 | 7.05 |
| 20-04-2026 21:30 | 49.89160 | -6.31396 | 1.55 | 2.25 | 7.1 | 4.8 | 118 | 24 | 11.2 | 5.9 | 7 |
| 20-04-2026 21:00 | 49.89189 | -6.31396 | 1.66 | 2.33 | 7.1 | 5.1 | 120 | 23 | 11.3 | 6.1 | 8.21 |
| 20-04-2026 20:30 | 49.89153 | -6.31388 | 1.75 | 2.56 | 7.1 | 5.3 | 114 | 23 | 11.3 | 6.3 | 9.39 |
| 20-04-2026 20:00 | 49.89131 | -6.31276 | 2.07 | 3.09 | 6.2 | 5.1 | 93 | 34 | 11.3 | 5.9 | 12.38 |
| 20-04-2026 19:30 | 49.89138 | -6.31250 | 2.03 | 3.16 | 6.7 | 5.1 | 112 | 30 | 11.3 | 5.9 | 11.93 |
| 20-04-2026 19:00 | 49.89138 | -6.31222 | 2.03 | 2.99 | 6.2 | 5.1 | 110 | 30 | 11.3 | 5.9 | 11.85 |
| 20-04-2026 18:30 | 49.89244 | -6.31150 | 2.15 | 3.5 | 7.1 | 5.3 | 112 | 23 | 11.3 | 6 | 13.56 |
| 20-04-2026 18:00 | 49.89282 | -6.31154 | 2.14 | 4.15 | 6.7 | 5.1 | 107 | 24 | 11.2 | 5.9 | 13.19 |
| 20-04-2026 17:30 | 49.89287 | -6.31156 | 1.98 | 2.85 | 6.2 | 5.1 | 114 | 26 | 11.3 | 5.8 | 11.11 |
| 20-04-2026 17:00 | 49.89284 | -6.31154 | 2.14 | 3.3 | 6.2 | 5.1 | 112 | 26 | 11.3 | 5.7 | 12.82 |
| 20-04-2026 16:30 | 49.89284 | -6.31150 | 1.85 | 2.82 | 6.2 | 4.9 | 115 | 22 | 11.3 | 5.6 | 9.35 |
| 20-04-2026 16:00 | 49.89291 | -6.31156 | 1.95 | 3.42 | 6.2 | 5 | 120 | 23 | 11.3 | 5.6 | 10.44 |
| 20-04-2026 15:30 | 49.89294 | -6.31169 | 1.87 | 3.31 | 6.2 | 4.7 | 122 | 25 | 11.3 | 5.3 | 9.14 |
| 20-04-2026 15:00 | 49.89303 | -6.31188 | 1.77 | 3.75 | 5.9 | 4.6 | 115 | 22 | 11.3 | 5.3 | 8.13 |
| 20-04-2026 14:30 | 49.89310 | -6.31214 | 1.71 | 2.98 | 5.6 | 4.5 | 124 | 22 | 11.3 | 5.1 | 7.33 |
| 20-04-2026 14:00 | 49.89316 | -6.31261 | 1.57 | 2.42 | 5.9 | 4.4 | 129 | 24 | 11.3 | 5 | 6.08 |
| 20-04-2026 13:30 | 49.89298 | -6.31349 | 1.48 | 2.25 | 5.6 | 4.1 | 135 | 27 | 11.3 | 4.8 | 5.15 |
| 20-04-2026 13:00 | 49.89256 | -6.31398 | 1.34 | 2.23 | 5.6 | 4.1 | 135 | 28 | 11.3 | 4.8 | 4.19 |
| 20-04-2026 12:30 | 49.89238 | -6.31405 | 1.3 | 2.25 | 4.8 | 4 | 118 | 27 | 11.3 | 4.7 | 3.87 |
| 20-04-2026 12:00 | 49.89230 | -6.31407 | 1.22 | 1.84 | 5 | 3.9 | 129 | 36 | 11.3 | 4.6 | 3.36 |
| 20-04-2026 11:30 | 49.89227 | -6.31409 | 1.15 | 1.84 | 5.3 | 4 | 139 | 26 | 11.3 | 4.8 | 3.08 |
| 20-04-2026 11:00 | 49.89221 | -6.31409 | 1.16 | 2.08 | 5 | 4 | 131 | 20 | 11.2 | 4.7 | 3.12 |
| 20-04-2026 10:30 | 49.89200 | -6.31405 | 0.94 | 1.6 | 5.6 | 3.7 | 138 | 29 | 11.2 | 4.7 | 2.03 |
| 20-04-2026 10:00 | 49.89187 | -6.31405 | 0.94 | 1.42 | 5.3 | 3.7 | 138 | 24 | 11.2 | 4.8 | 2.09 |
| 20-04-2026 09:30 | 49.89166 | -6.31398 | 0.91 | 1.47 | 5.6 | 3.9 | 139 | 21 | 11.3 | 5.1 | 2.06 |
| 20-04-2026 09:00 | 49.89149 | -6.31375 | 0.88 | 1.32 | 5.6 | 4 | 135 | 26 | 11.3 | 5.1 | 1.95 |
| 20-04-2026 08:30 | 49.89162 | -6.31390 | 0.92 | 1.58 | 5.3 | 4.3 | 131 | 31 | 11.3 | 5.2 | 2.16 |
| 20-04-2026 08:00 | 49.89137 | -6.31362 | 0.95 | 1.83 | 5 | 4.2 | 121 | 38 | 11.3 | 5.1 | 2.25 |
| 20-04-2026 07:30 | 49.89133 | -6.31238 | 1.12 | 2.19 | 4.8 | 4.1 | 114 | 37 | 11.2 | 4.8 | 2.96 |
| 20-04-2026 07:00 | 49.89136 | -6.31231 | 1.06 | 1.55 | 4.5 | 4 | 108 | 31 | 11.2 | 4.8 | 2.62 |
| 20-04-2026 06:30 | 49.89161 | -6.31173 | 0.97 | 1.52 | 4.8 | 3.9 | 117 | 31 | 11.2 | 4.7 | 2.16 |
| 20-04-2026 06:00 | 49.89263 | -6.31145 | 0.9 | 1.46 | 5 | 3.8 | 118 | 34 | 11.2 | 4.7 | 1.85 |
| 20-04-2026 05:30 | 49.89280 | -6.31150 | 0.8 | 1.25 | 5 | 3.9 | 122 | 28 | 11.2 | 4.9 | 1.53 |
| 20-04-2026 05:00 | 49.89278 | -6.31141 | 0.79 | 1.25 | 4.5 | 4 | 108 | 30 | 11.2 | 4.9 | 1.49 |
| 20-04-2026 04:30 | 49.89286 | -6.31147 | 0.76 | 1.12 | 4.3 | 4 | 106 | 42 | 11.2 | 5.1 | 1.44 |
| 20-04-2026 04:00 | 49.89292 | -6.31139 | 0.76 | 1.12 | 4.3 | 3.9 | 107 | 39 | 11.2 | 4.9 | 1.38 |
| 20-04-2026 03:30 | 49.89287 | -6.31130 | 0.75 | 0.97 | 4.5 | 3.8 | 120 | 31 | 11.2 | 4.7 | 1.3 |
| 20-04-2026 03:00 | 49.89289 | -6.31145 | 0.76 | 1.18 | 4.5 | 3.8 | 108 | 29 | 11.2 | 4.9 | 1.38 |
| 20-04-2026 02:30 | 49.89294 | -6.31162 | 0.71 | 0.97 | 4.3 | 3.7 | 120 | 26 | 11.2 | 4.7 | 1.16 |
| 20-04-2026 02:00 | 49.89301 | -6.31182 | 0.7 | 0.96 | 4.2 | 3.6 | 121 | 25 | 11.2 | 4.7 | 1.13 |
| 20-04-2026 01:30 | 49.89308 | -6.31222 | 0.68 | 1.03 | 4.2 | 3.4 | 124 | 27 | 11.2 | 4.3 | 0.99 |
| 20-04-2026 01:00 | 49.89275 | -6.31364 | 0.68 | 1.16 | 4.3 | 3.5 | 131 | 29 | 11.2 | 4.4 | 0.99 |
| 20-04-2026 00:30 | 49.89238 | -6.31394 | 0.68 | 1.19 | 4.3 | 3.6 | 128 | 31 | 11.2 | 4.5 | 1.02 |
| 20-04-2026 00:00 | 49.89227 | -6.31398 | 0.64 | 0.95 | 4.5 | 3.4 | 134 | 40 | 11.2 | 4.6 | 0.92 |
