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.
Rhyl Flats
Average values for 2021
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 0.81 | 4.6 | 3.4 | 259 | 6.5 |
| February | 0.61 | 5.7 | 3.2 | 194 | 5.9 |
| March | 0.68 | 4.7 | 3.1 | 197 | 6.7 |
| April | - | - | - | - | - |
| May | - | - | - | - | - |
| June | - | - | - | - | - |
| July | 0.41 | 3.7 | 2.9 | 220 | 18.6 |
| August | 0.49 | 3.8 | 2.9 | 240 | 17.6 |
| September | 0.43 | 3.7 | 2.9 | 223 | 17.6 |
| October | 0.8 | 4.5 | 3.4 | 270 | 14.6 |
| November | 0.97 | 5.2 | 3.6 | 304 | 11.9 |
| December | 0.52 | 4.2 | 3 | 160 | 7.9 |
