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.
Porthleven
Average values for 2018
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 2.1 | 11.4 | 6 | 238 | 10.2 |
| February | 1.18 | 12.1 | 5.7 | 239 | 9 |
| March | 1.51 | 10.9 | 6.1 | 228 | 8.2 |
| April | 1.44 | 10.8 | 6.2 | 236 | 9.6 |
| May | 0.72 | 10.6 | 5.6 | 241 | 11.6 |
| June | 0.6 | 10.3 | 5.2 | 226 | 14.7 |
| July | 0.62 | 10.4 | 5 | 226 | 17.4 |
| August | 0.77 | 8.2 | 4.6 | 241 | 16.2 |
| September | 0.89 | 9.8 | 5.2 | 239 | 15.1 |
| October | 0.97 | 11 | 5.9 | 236 | 14.4 |
| November | 1.92 | 11.3 | 6.1 | 230 | 12.9 |
| December | 2.01 | 11 | 6.1 | 233 | 11.6 |
