St Mary's Sound wave buoy daily averages for Aug 2025 last observation shown oldest observation available Monthly averages for
Average Wave Height
3 ft
0.1 — 10.3 ft
Average Wave period
5 secs
3 — 8 secs
Average Wave Direction
WSW
Average Water temperature
17 °C
14.2 — 19.4 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 6 | 5 | SW | 16.1 | |
| 6 | 5 | SW | 16.4 | |
| 4 | 5 | WSW | 16.2 | |
| 5 | 5 | WSW | 16.2 | |
| 5 | 5 | WSW | 16.3 | |
| 5 | 6 | WSW | 16.6 | |
| 3 | 5 | SW | 17.2 | |
| 2 | 4 | S | 16.8 | |
| 1 | 6 | WSW | 16.9 | |
| 1 | 5 | WNW | 16.6 | |
| 2 | 4 | E | 17.6 | |
| 2 | 4 | ESE | 18.3 | |
| 2 | 4 | ESE | 18.4 | |
| 6 | 4 | E | 18.5 | |
| 8 | 5 | E | 18.0 | |
| 7 | 5 | ESE | 18.1 | |
| 2 | 4 | SSE | 17.7 | |
| 2 | 5 | WSW | 16.6 | |
| 2 | 4 | SW | 16.6 | |
| 3 | 5 | S | 15.9 | |
| 3 | 4 | ESE | 16.4 | |
| 2 | 5 | NW | 16.7 | |
| 2 | 5 | NNW | 16.0 | |
| 2 | 5 | WNW | 16.4 | |
| 3 | 4 | SW | 16.1 | |
| 2 | 5 | WNW | 16.9 | |
| 2 | 4 | NNW | 16.6 | |
| 3 | 4 | W | 16.1 | |
| 1 | 3 | WNW | 16.3 | |
| 1 | 5 | NNW | 16.0 | |
| 1 | 5 | NNW | 15.8 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.