St Mary's Sound wave buoy daily averages for Dec 2025 last observation shown oldest observation available Monthly averages for
Average Wave Height
8 ft
3.9 — 22.1 ft
Average Wave period
6 secs
4 — 9 secs
Average Wave Direction
SW
Average Water temperature
12 °C
12.2 — 12.7 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 8 | 6 | S | 12.3 | |
| 8 | 5 | SSW | 12.3 | |
| 6 | 5 | WSW | 12.3 | |
| 7 | 7 | SW | 12.4 | |
| 9 | 6 | SSW | 12.4 | |
| 8 | 7 | SSW | 12.5 | |
| 16 | 8 | SSW | 12.5 | |
| 8 | 6 | SSW | 12.5 | |
| 8 | 6 | SSW | 12.5 | |
| 8 | 6 | SW | 12.4 | |
| 8 | 6 | SW | 12.5 | |
| 5 | 6 | WSW | 12.5 | |
| 5 | 6 | SW | 12.6 | |
| 7 | 6 | SSW | 12.6 | |
| 9 | 6 | SSW | 12.6 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.