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.
Chesil
Average values for 2025
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.46 | 11.4 | 6.1 | 217 | 9.5 |
| February | 1.07 | 10.9 | 5.5 | 205 | 8.9 |
| March | 0.54 | 10.5 | 5.3 | 207 | 9.1 |
| April | 0.61 | 8.9 | 4.9 | 209 | 10.8 |
| May | 0.52 | 8.4 | 4.4 | 200 | 13.2 |
| June | 0.76 | 7 | 3.9 | 217 | 15.8 |
| July | 0.65 | 6.7 | 3.8 | 220 | 17.9 |
| August | 0.69 | 7.1 | 4 | 209 | 18.6 |
| September | 1.19 | 7.5 | 4.8 | 211 | 17.4 |
| October | 1.05 | 7.6 | 4.6 | 208 | 15 |
| November | 1.31 | 8.3 | 4.9 | 222 | 13 |
| December | 1.45 | 9.5 | 5.5 | 200 | 11.2 |
