Porthleven wave
buoy daily averages for Sep 2025 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
6 ft
2.4 — 9.7 ft
Average Wave period
5 secs
4 — 7 secs
Average Wave Direction
SW
Average Water temperature
17 °C
15.8 — 18 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 5.4 | 5 | WSW | 15.9 | |
| 5.8 | 5.1 | WSW | 16.0 | |
| 6.3 | 5.1 | WSW | 16.1 | |
| 4.8 | 4.8 | SW | 16.2 | |
| 5.5 | 4.9 | SW | 16.4 | |
| 5.0 | 5.2 | SW | 16.6 | |
| 5.8 | 5.6 | SW | 16.7 | |
| 3.2 | 4.1 | SSW | 17.0 | |
| 3.7 | 5.5 | WSW | 17.3 | |
| 7.1 | 6.1 | SW | 17.6 | |
| 7.9 | 6 | SW | 17.7 | |
| 5.3 | 5.2 | SW | 17.7 | |
| 6.0 | 5.4 | WSW | 17.9 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.