St Mary's Sound wave
buoy daily averages for Feb 2025 last observation shown
oldest observation available
Monthly averages for 
Average Wave Height
6 ft
1.6 — 16.4 ft
Average Wave period
5 secs
3 — 8 secs
Average Wave Direction
S
Average Water temperature
11 °C
10.4 — 11 °C
| Day | Wave height (ft) | Wave Period (s) | Wave Direction | Water Temp (°C) |
|---|---|---|---|---|
| 2.0 | 4.9 | W | 10.8 | |
| 3.1 | 5.7 | WSW | 10.8 | |
| 5.0 | 5.3 | WSW | 10.9 | |
| 5.0 | 5.8 | SW | 10.9 | |
| 8.3 | 6.5 | SSW | 10.9 | |
| 10.3 | 6.1 | SW | 10.8 | |
| 6.9 | 6.4 | SW | 10.8 | |
| 12.2 | 6.9 | SSW | 10.8 | |
| 9.2 | 6 | SSW | 10.8 | |
| 7.0 | 5.4 | SSW | 10.6 | |
| 7.1 | 5.1 | SSE | 10.6 | |
| 5.2 | 4.9 | SSE | 10.6 | |
| 7.0 | 5.2 | SE | 10.6 | |
| 6.1 | 5.3 | S | 10.6 | |
| 8.2 | 6 | SE | 10.5 | |
| 7.5 | 5.3 | ESE | 10.4 | |
| 5.9 | 4.9 | SE | 10.4 | |
| 4.9 | 4.4 | ESE | 10.5 | |
| 4.1 | 4.7 | ESE | 10.5 | |
| 3.1 | 3.9 | NE | 10.5 | |
| 2.8 | 5.2 | E | 10.6 | |
| 6.6 | 5.6 | ESE | 10.6 | |
| 5.5 | 4.9 | ESE | 10.8 | |
| 4.3 | 5.9 | WSW | 10.8 | |
| 7.4 | 5.9 | SW | 10.8 | |
| 5.1 | 5.6 | WSW | 10.8 | |
| 7.2 | 6 | SSW | 10.8 | |
| 4.7 | 4.8 | SW | 10.8 |
Realtime data displayed on this page is from the Regional
Coastal Monitoring Programme.