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 2020
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.9 | 11.1 | 6.3 | 233 | 10.1 |
| February | 2.6 | 11.4 | 6.2 | 235 | 9.7 |
| March | 1.34 | 10.9 | 5.5 | 230 | 9.5 |
| April | 0.76 | 11.4 | 5.7 | 231 | 10.8 |
| May | 0.77 | 10.9 | 5.4 | 234 | 12.5 |
| June | 0.77 | 8.5 | 4.6 | 235 | 14.6 |
| July | 0.79 | 8.9 | 4.6 | 232 | 14.6 |
| August | 1.01 | 8.3 | 4.8 | 235 | 16.4 |
| September | 0.73 | 10.2 | 4.9 | 235 | 15.9 |
| October | 1.66 | 9.2 | 5.3 | 230 | 14.1 |
| November | 1.58 | 10.8 | 5.7 | 233 | 12.7 |
| December | 1.84 | 10.6 | 5.8 | 235 | 11.1 |
