National Network of Regional Coastal Monitoring Programmes
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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 All years
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.58 | 9.1 | 5.3 | 216 | 10.9 |
| February | 1.8 | 9.2 | 5.5 | 210 | 10.3 |
| March | 1.49 | 9.2 | 5.3 | 212 | 10.1 |
| April | 1.17 | 8.4 | 4.9 | 200 | 10.6 |
| May | 0.91 | 8.2 | 4.8 | 219 | 11.9 |
| June | 0.81 | 7.7 | 4.6 | 218 | 13.6 |
| July | 0.76 | 7.4 | 4.5 | 238 | 15.2 |
| August | 0.84 | 7.4 | 4.6 | 236 | 15.6 |
| September | 0.98 | 8 | 4.7 | 217 | 15.3 |
| October | 1.38 | 8.4 | 5.1 | 212 | 14.2 |
| November | 1.52 | 8.7 | 5.2 | 212 | 13 |
| December | 1.73 | 9 | 5.4 | 214 | 11.9 |
