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 2022
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.25 | 11.1 | 5.9 | 236 | 10.7 |
| February | 1.93 | 11.2 | 5.6 | 236 | 10.3 |
| March | 1.27 | 12.4 | 6.2 | 233 | 10.3 |
| April | 0.91 | 11.3 | 5.7 | 231 | 11.2 |
| May | 0.87 | 9.8 | 5.3 | 239 | 12.9 |
| June | 0.9 | 9.4 | 5.4 | 231 | 14.9 |
| July | 0.57 | 8.6 | 4.8 | 235 | 16.5 |
| August | 0.5 | 9.5 | 4.5 | 213 | 17.7 |
| September | 0.93 | 10.6 | 5.4 | 234 | 17.2 |
| October | 1.63 | 9.5 | 5.6 | 231 | 15.6 |
| November | 2.38 | 11.2 | 6.2 | 234 | 13.6 |
| December | 1.61 | 11.3 | 6.3 | 224 | 11.3 |
