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 All years
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.73 | 11.1 | 6.1 | 235 | 10.3 |
| February | 1.64 | 11.8 | 6 | 235 | 9.7 |
| March | 1.39 | 11.3 | 6 | 235 | 9.7 |
| April | 1.03 | 10.8 | 5.4 | 232 | 10.5 |
| May | 0.88 | 9.9 | 5.2 | 234 | 12.2 |
| June | 0.81 | 9 | 4.9 | 232 | 14.3 |
| July | 0.78 | 8.7 | 4.7 | 232 | 15.8 |
| August | 0.91 | 8.8 | 4.8 | 233 | 16.2 |
| September | 0.9 | 9.9 | 5.1 | 234 | 16.1 |
| October | 1.32 | 10 | 5.6 | 232 | 14.8 |
| November | 1.51 | 10.6 | 5.7 | 235 | 13.1 |
| December | 1.89 | 10.8 | 5.9 | 234 | 11.5 |
