National Network of Regional Coastal Monitoring Programmes
« Dychwelid at fap am donau, llanw a gorsafoedd tywydd eraill.
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 2017
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 0.75 | 4.7 | 3.4 | 252 | 6.8 |
| February | 0.77 | 4.6 | 3.3 | 230 | 6.6 |
| March | 0.59 | 4.1 | 3.2 | 246 | 8.1 |
| April | 0.65 | 4.1 | 3.2 | 279 | 10 |
| May | 0.42 | 3.6 | 2.9 | 196 | 12.2 |
| June | 0.66 | 4.1 | 3.2 | 253 | 15.3 |
| July | 0.5 | 3.7 | 3 | 261 | 17.2 |
| August | 0.56 | 3.8 | 3 | 274 | 17.2 |
| September | 0.7 | 4.4 | 3.2 | 264 | 15.9 |
| October | 0.95 | 4.7 | 3.5 | 271 | 13.9 |
| November | 1.07 | 5.1 | 3.8 | 306 | 11 |
| December | 1.02 | 5.1 | 3.8 | 288 | 7.4 |
