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. Long-range graphs are plotted from a randomised subsample of half-hourly data.
St Mary's Sound
Average values for 2017
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.42 | 8.2 | 5 | 202 | 11 |
| February | 1.86 | 9.1 | 5.5 | 214 | 10.5 |
| March | 1.55 | 8.9 | 5.3 | 223 | 10.3 |
| April | 0.7 | 8.4 | 4.6 | 208 | 10.9 |
| May | 1.1 | 8.2 | 4.9 | 203 | 11.9 |
| June | 0.92 | 8.3 | 4.8 | 260 | 13.9 |
| July | 0.77 | 7.4 | 4.6 | 251 | 14.8 |
| August | 0.79 | 7.1 | 4.6 | 245 | 15.2 |
| September | 1.14 | 7.9 | 5 | 245 | 14.8 |
| October | 1.21 | 8.8 | 5.1 | 241 | 14.1 |
| November | 1.01 | 8.4 | 4.7 | 236 | 13.1 |
| December | 1.35 | 8.8 | 5.1 | 216 | 11.6 |
