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 2019
| Month | Hs (m) | Tp (s) | Tz (s) | Dirp (degrees) | TSea (degrees C) |
|---|---|---|---|---|---|
| January | 1.04 | 11.1 | 5.6 | 240 | 10.4 |
| February | 1.94 | 11.5 | 6.4 | 235 | 9.6 |
| March | 1.59 | 11 | 6 | 239 | 10.3 |
| April | 1.04 | 10.4 | 5.7 | 235 | 10.9 |
| May | 0.78 | 10.2 | 5.3 | 238 | 12.4 |
| June | 0.73 | 8.1 | 4.5 | 225 | 13.8 |
| July | 0.72 | 9.2 | 5.1 | 229 | 16.7 |
| August | 1.04 | 8.2 | 4.8 | 237 | 16.7 |
| September | 1.06 | 9.3 | 4.9 | 234 | 15.7 |
| October | 1.49 | 10.5 | 5.7 | 231 | 14.6 |
| November | 1.6 | 10.7 | 5.8 | 235 | 12.3 |
| December | 2.2 | 11.4 | 6.3 | 235 | 10.9 |
