St Mary's Sound wave buoy monthly averages for 2025 last observation shown oldest observation available
Average Wave Height
4 ft
0.1 — 22.1 ft
Average Wave period
5 secs
3 — 9 secs
Average Wave Direction
SSW
Average Water temperature
13 °C
10.4 — 19.4 °C
| Month | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 8 | 6 | SW | 12.5 | |
| 5 | 5 | SW | 13.3 | |
| 4 | 5 | SW | 14.3 | |
| 4 | 5 | SW | 15.4 | |
| 3 | 5 | WSW | 16.8 | |
| 2 | 5 | W | 15.9 | |
| 3 | 5 | WSW | 14.5 | |
| 3 | 4 | SSE | 13.4 | |
| 4 | 5 | SSE | 11.6 | |
| 4 | 5 | SSW | 10.9 | |
| 6 | 5 | S | 10.7 | |
| 6 | 6 | SSW | 11.3 |
Realtime data displayed on this page is from the
Regional Coastal Monitoring Programme
.