Porthleven wave buoy daily averages for Mar 2025 last observation shown oldest observation available Monthly averages for
Average Wave Height
 3 ft 
 0.8 — 6.6 ft
   Average Wave period
 6 secs 
 3 — 9 secs
   Average Wave Direction
 SW 
  Average Water temperature
 10 °C 
 10 — 11.8 °C
   | Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) | 
|---|---|---|---|---|
| 2.1 | 5.7 | WSW | 10.8 | |
| 3.0 | 4.9 | WSW | 10.7 | |
| 3.8 | 4.9 | WSW | 10.5 | |
| 3.9 | 4.7 | WSW | 10.7 | |
| 2.1 | 5.8 | WSW | 10.8 | |
| 1.6 | 6 | WSW | 11.0 | |
| 1.4 | 4.9 | WSW | 10.5 | |
| 1.7 | 6 | WSW | 10.3 | |
| 2.6 | 4.8 | WSW | 10.3 | |
| 4.9 | 6.2 | SW | 10.3 | |
| 5.3 | 6.6 | SSW | 10.2 | |
| 3.3 | 5.2 | SW | 10.2 | |
| 2.6 | 5.5 | SW | 10.0 | |
| 3.0 | 4.6 | SW | 9.9 | |
| 1.7 | 4.3 | SSW | 9.9 | |
| 1.3 | 5.7 | SW | 9.9 | |
| 1.6 | 6.7 | SW | 10.0 | |
| 2.3 | 7.3 | SW | 10.0 | |
| 1.3 | 7 | SW | 10.1 | |
| 1.4 | 6.2 | WSW | 10.3 | |
| 2.2 | 6.3 | SW | 10.4 | |
| 3.3 | 6.7 | SSW | 10.4 | |
| 3.9 | 6.9 | SW | 10.4 | |
| 4.0 | 5.4 | SW | 10.3 | |
| 3.4 | 5.4 | WSW | 10.3 | |
| 3.0 | 4.7 | SW | 10.1 | |
| 1.9 | 6.1 | WSW | 10.0 | |
| 2.2 | 7.1 | WSW | 9.9 | |
| 2.4 | 7.3 | WSW | 9.9 | |
| 2.9 | 7.7 | WSW | 9.9 | |
| 1.8 | 6.9 | WSW | 9.9 | 
 Realtime data displayed on this page is from the Regional
                Coastal Monitoring Programme.