St Mary's Sound wave
buoy daily averages for Apr 2025 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
7 ft
3.3 — 12.5 ft
Average Wave period
5 secs
4 — 6 secs
Average Wave Direction
ESE
Average Water temperature
11 °C
11 — 11.3 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 4.2 | 4.3 | SE | 11.2 | |
| 6.2 | 4.8 | ESE | 11.2 | |
| 7.5 | 5.5 | ESE | 11.2 | |
| 8.2 | 5.3 | ESE | 11.2 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.