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.
Start Bay
Average values for 2025
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.04 | 10.1 | 5.2 | 168 | 10.6 |
| February | 1.14 | 8.2 | 4.8 | 140 | 9.5 |
| March | 0.67 | 8.1 | 4 | 141 | 9.6 |
| April | 0.77 | 7.2 | 4 | 135 | 10.8 |
| May | 0.51 | 6.4 | 3.7 | 134 | 13.4 |
| June | 0.41 | 7.3 | 3.8 | 166 | 14.8 |
| July | 0.33 | 7.2 | 4 | 166 | 17.1 |
| August | 0.53 | 7.6 | 4 | 152 | 18 |
| September | 0.74 | 8.1 | 4.4 | 159 | 16.4 |
| October | 0.76 | 8.3 | 4.7 | 157 | 15.2 |
| November | 0.89 | 8 | 4.8 | 158 | 13.6 |
| December | - | - | - | - | - |
